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felixbuenemann/nginx-1.9.15-spdy.patch

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nginx-1.9.15-spdy.patch
<
From 3a8fe43e9e073f26e44f62ad072079acd8b78de3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felix=20Bu=CC=88nemann?= <buenemann@louis.info>
Date: Mon, 30 May 2016 00:00:29 +0200
Subject: [PATCH] Add SPDY support back to Nginx with HTTP/2
Ported to 1.9.15 from 1.9.7 patch by Jiale Zhi from CloudFlare with
additional fixes to re-enable deprecated spdy directives and fix
compilation with http_v2 module enabled and spdy disabled.
---
auto/modules | 31 +
auto/options | 3 +
src/core/ngx_connection.h | 1 +
src/http/modules/ngx_http_ssl_module.c | 55 +-
src/http/ngx_http.c | 27 +
src/http/ngx_http.h | 6 +
src/http/ngx_http_core_module.c | 22 +-
src/http/ngx_http_core_module.h | 6 +
src/http/ngx_http_request.c | 57 +
src/http/ngx_http_request.h | 3 +
src/http/ngx_http_request_body.c | 12 +
src/http/ngx_http_spdy.c | 3701 ++++++++++++++++++++++++++++++++
src/http/ngx_http_spdy.h | 261 +++
src/http/ngx_http_spdy_filter_module.c | 1222 +++++++++++
src/http/ngx_http_spdy_module.c | 408 ++++
src/http/ngx_http_spdy_module.h | 41 +
src/http/ngx_http_upstream.c | 11 +
src/http/v2/ngx_http_v2_module.c | 69 -
18 files changed, 5858 insertions(+), 78 deletions(-)
create mode 100644 src/http/ngx_http_spdy.c
create mode 100644 src/http/ngx_http_spdy.h
create mode 100644 src/http/ngx_http_spdy_filter_module.c
create mode 100644 src/http/ngx_http_spdy_module.c
create mode 100644 src/http/ngx_http_spdy_module.h
diff --git a/auto/modules b/auto/modules
index 22ff6d9..42966dd 100644
--- a/auto/modules
+++ b/auto/modules
@@ -139,6 +139,7 @@ fi
# ngx_http_header_filter
# ngx_http_chunked_filter
# ngx_http_v2_filter
+# ngx_http_spdy_filter
# ngx_http_range_header_filter
# ngx_http_gzip_filter
# ngx_http_postpone_filter
@@ -171,6 +172,7 @@ ngx_module_order="ngx_http_static_module \
ngx_http_header_filter_module \
ngx_http_chunked_filter_module \
ngx_http_v2_filter_module \
+ ngx_http_spdy_filter_module \
ngx_http_range_header_filter_module \
ngx_http_gzip_filter_module \
ngx_http_postpone_filter_module \
@@ -232,6 +234,21 @@ if [ $HTTP_V2 = YES ]; then
. auto/module
fi
+if [ $HTTP_SPDY = YES ]; then
+ have=NGX_HTTP_SPDY . auto/have
+ USE_ZLIB=YES
+
+ ngx_module_name=ngx_http_spdy_filter_module
+ ngx_module_incs=
+ ngx_module_deps=
+ ngx_module_srcs=src/http/ngx_http_spdy_filter_module.c
+ ngx_module_libs=
+ ngx_module_link=$HTTP_SPDY
+
+ . auto/module
+fi
+
+
if :; then
ngx_module_name=ngx_http_range_header_filter_module
ngx_module_incs=
@@ -440,6 +457,20 @@ if [ $HTTP_V2 = YES ]; then
. auto/module
fi
+if [ $HTTP_SPDY = YES ]; then
+ have=NGX_HTTP_SPDY . auto/have
+
+ ngx_module_name=ngx_http_spdy_module
+ ngx_module_incs=src/http
+ ngx_module_deps="src/http/ngx_http_spdy.h src/http/ngx_http_spdy_module.h"
+ ngx_module_srcs="src/http/ngx_http_spdy.c \
+ src/http/ngx_http_spdy_module.c"
+ ngx_module_libs=
+ ngx_module_link=$HTTP_SPDY
+
+ . auto/module
+fi
+
if :; then
ngx_module_name=ngx_http_static_module
ngx_module_incs=
diff --git a/auto/options b/auto/options
index ac8beb1..a8d8c6e 100644
--- a/auto/options
+++ b/auto/options
@@ -60,6 +60,7 @@ HTTP_CHARSET=YES
HTTP_GZIP=YES
HTTP_SSL=NO
HTTP_V2=NO
+HTTP_SPDY=NO
HTTP_SSI=YES
HTTP_POSTPONE=NO
HTTP_REALIP=NO
@@ -219,6 +220,7 @@ do
--with-http_ssl_module) HTTP_SSL=YES ;;
--with-http_v2_module) HTTP_V2=YES ;;
+ --with-http_spdy_module) HTTP_SPDY=YES ;;
--with-http_realip_module) HTTP_REALIP=YES ;;
--with-http_addition_module) HTTP_ADDITION=YES ;;
--with-http_xslt_module) HTTP_XSLT=YES ;;
@@ -398,6 +400,7 @@ cat << END
--with-http_ssl_module enable ngx_http_ssl_module
--with-http_v2_module enable ngx_http_v2_module
+ --with-http_spdy_module enable ngx_http_spdy_module
--with-http_realip_module enable ngx_http_realip_module
--with-http_addition_module enable ngx_http_addition_module
--with-http_xslt_module enable ngx_http_xslt_module
diff --git a/src/core/ngx_connection.h b/src/core/ngx_connection.h
index b0d162a..bee16de 100644
--- a/src/core/ngx_connection.h
+++ b/src/core/ngx_connection.h
@@ -120,6 +120,7 @@ typedef enum {
#define NGX_LOWLEVEL_BUFFERED 0x0f
#define NGX_SSL_BUFFERED 0x01
#define NGX_HTTP_V2_BUFFERED 0x02
+#define NGX_SPDY_BUFFERED 0x04
struct ngx_connection_s {
diff --git a/src/http/modules/ngx_http_ssl_module.c b/src/http/modules/ngx_http_ssl_module.c
index 6a4108c..0016991 100644
--- a/src/http/modules/ngx_http_ssl_module.c
+++ b/src/http/modules/ngx_http_ssl_module.c
@@ -326,10 +326,10 @@ ngx_http_ssl_alpn_select(ngx_ssl_conn_t *ssl_conn, const unsigned char **out,
#if (NGX_DEBUG)
unsigned int i;
#endif
-#if (NGX_HTTP_V2)
+#if (NGX_HTTP_V2 || NGX_HTTP_SPDY)
ngx_http_connection_t *hc;
#endif
-#if (NGX_HTTP_V2 || NGX_DEBUG)
+#if (NGX_HTTP_V2 || NGX_HTTP_SPDY || NGX_DEBUG)
ngx_connection_t *c;
c = ngx_ssl_get_connection(ssl_conn);
@@ -343,9 +343,20 @@ ngx_http_ssl_alpn_select(ngx_ssl_conn_t *ssl_conn, const unsigned char **out,
}
#endif
-#if (NGX_HTTP_V2)
+#if (NGX_HTTP_V2 || NGX_HTTP_SPDY)
hc = c->data;
+#endif
+#if (NGX_HTTP_V2 && NGX_HTTP_SPDY)
+ if (hc->addr_conf->http2 && hc->addr_conf->spdy) {
+ srv = (unsigned char *) NGX_HTTP_V2_ALPN_ADVERTISE
+ NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE;
+ srvlen = sizeof(NGX_HTTP_V2_ALPN_ADVERTISE NGX_SPDY_NPN_ADVERTISE
+ NGX_HTTP_NPN_ADVERTISE) - 1;
+
+ } else
+#endif
+#if (NGX_HTTP_V2)
if (hc->addr_conf->http2) {
srv =
(unsigned char *) NGX_HTTP_V2_ALPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE;
@@ -353,6 +364,13 @@ ngx_http_ssl_alpn_select(ngx_ssl_conn_t *ssl_conn, const unsigned char **out,
} else
#endif
+#if (NGX_HTTP_SPDY)
+ if (hc->addr_conf->spdy) {
+ srv = (unsigned char *) NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE;
+ srvlen = sizeof(NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE) - 1;
+
+ } else
+#endif
{
srv = (unsigned char *) NGX_HTTP_NPN_ADVERTISE;
srvlen = sizeof(NGX_HTTP_NPN_ADVERTISE) - 1;
@@ -380,19 +398,32 @@ static int
ngx_http_ssl_npn_advertised(ngx_ssl_conn_t *ssl_conn,
const unsigned char **out, unsigned int *outlen, void *arg)
{
-#if (NGX_HTTP_V2 || NGX_DEBUG)
+#if (NGX_HTTP_V2 || NGX_HTTP_SPDY || NGX_DEBUG)
ngx_connection_t *c;
c = ngx_ssl_get_connection(ssl_conn);
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "SSL NPN advertised");
#endif
-#if (NGX_HTTP_V2)
+#if (NGX_HTTP_V2 || NGX_HTTP_SPDY)
{
ngx_http_connection_t *hc;
hc = c->data;
+#endif
+#if (NGX_HTTP_V2 && NGX_HTTP_SPDY)
+ if (hc->addr_conf->http2 && hc->addr_conf->spdy) {
+ *out = (unsigned char *) NGX_HTTP_V2_NPN_ADVERTISE
+ NGX_SPDY_NPN_ADVERTISE
+ NGX_HTTP_NPN_ADVERTISE;
+ *outlen = sizeof(NGX_HTTP_V2_NPN_ADVERTISE NGX_SPDY_NPN_ADVERTISE
+ NGX_HTTP_NPN_ADVERTISE) - 1;
+
+ return SSL_TLSEXT_ERR_OK;
+ } else
+#endif
+#if (NGX_HTTP_V2)
if (hc->addr_conf->http2) {
*out =
(unsigned char *) NGX_HTTP_V2_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE;
@@ -400,6 +431,20 @@ ngx_http_ssl_npn_advertised(ngx_ssl_conn_t *ssl_conn,
return SSL_TLSEXT_ERR_OK;
}
+#endif
+#if (NGX_HTTP_V2 && NGX_HTTP_SPDY)
+ else
+#endif
+#if (NGX_HTTP_SPDY)
+ if (hc->addr_conf->spdy) {
+ *out = (unsigned char *) NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE;
+ *outlen = sizeof(NGX_SPDY_NPN_ADVERTISE NGX_HTTP_NPN_ADVERTISE) - 1;
+
+ return SSL_TLSEXT_ERR_OK;
+ }
+#endif
+
+#if (NGX_HTTP_V2 || NGX_HTTP_SPDY)
}
#endif
diff --git a/src/http/ngx_http.c b/src/http/ngx_http.c
index 0ceb613..8a0e98f 100644
--- a/src/http/ngx_http.c
+++ b/src/http/ngx_http.c
@@ -1229,6 +1229,9 @@ ngx_http_add_addresses(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
#if (NGX_HTTP_V2)
ngx_uint_t http2;
#endif
+#if (NGX_HTTP_SPDY)
+ ngx_uint_t spdy;
+#endif
/*
* we cannot compare whole sockaddr struct's as kernel
@@ -1286,6 +1289,9 @@ ngx_http_add_addresses(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
#if (NGX_HTTP_V2)
http2 = lsopt->http2 || addr[i].opt.http2;
#endif
+#if (NGX_HTTP_SPDY)
+ spdy = lsopt->spdy || addr[i].opt.spdy;
+#endif
if (lsopt->set) {
@@ -1320,6 +1326,9 @@ ngx_http_add_addresses(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
#if (NGX_HTTP_V2)
addr[i].opt.http2 = http2;
#endif
+#if (NGX_HTTP_SPDY)
+ addr[i].opt.spdy = spdy;
+#endif
return NGX_OK;
}
@@ -1363,6 +1372,18 @@ ngx_http_add_address(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
#endif
+#if (NGX_HTTP_SPDY && NGX_HTTP_SSL \
+ && !defined TLSEXT_TYPE_application_layer_protocol_negotiation \
+ && !defined TLSEXT_TYPE_next_proto_neg)
+ if (lsopt->spdy && lsopt->ssl) {
+ ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
+ "nginx was built with OpenSSL that lacks ALPN "
+ "and NPN support, SPDY is not enabled for %s",
+ lsopt->addr);
+ }
+
+#endif
+
addr = ngx_array_push(&port->addrs);
if (addr == NULL) {
return NGX_ERROR;
@@ -1855,6 +1876,9 @@ ngx_http_add_addrs(ngx_conf_t *cf, ngx_http_port_t *hport,
#if (NGX_HTTP_V2)
addrs[i].conf.http2 = addr[i].opt.http2;
#endif
+#if (NGX_HTTP_SPDY)
+ addrs[i].conf.spdy = addr[i].opt.spdy;
+#endif
addrs[i].conf.proxy_protocol = addr[i].opt.proxy_protocol;
if (addr[i].hash.buckets == NULL
@@ -1920,6 +1944,9 @@ ngx_http_add_addrs6(ngx_conf_t *cf, ngx_http_port_t *hport,
#if (NGX_HTTP_V2)
addrs6[i].conf.http2 = addr[i].opt.http2;
#endif
+#if (NGX_HTTP_SPDY)
+ addrs6[i].conf.spdy = addr[i].opt.spdy;
+#endif
addrs6[i].conf.proxy_protocol = addr[i].opt.proxy_protocol;
if (addr[i].hash.buckets == NULL
diff --git a/src/http/ngx_http.h b/src/http/ngx_http.h
index 19cb680..7d443c1 100644
--- a/src/http/ngx_http.h
+++ b/src/http/ngx_http.h
@@ -23,6 +23,9 @@ typedef struct ngx_http_chunked_s ngx_http_chunked_t;
#if (NGX_HTTP_V2)
typedef struct ngx_http_v2_stream_s ngx_http_v2_stream_t;
#endif
+#if (NGX_HTTP_SPDY)
+typedef struct ngx_http_spdy_stream_s ngx_http_spdy_stream_t;
+#endif
typedef ngx_int_t (*ngx_http_header_handler_pt)(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
@@ -41,6 +44,9 @@ typedef u_char *(*ngx_http_log_handler_pt)(ngx_http_request_t *r,
#if (NGX_HTTP_V2)
#include <ngx_http_v2.h>
#endif
+#if (NGX_HTTP_SPDY)
+#include <ngx_http_spdy.h>
+#endif
#if (NGX_HTTP_CACHE)
#include <ngx_http_cache.h>
#endif
diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index bd36aec..6351c9f 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -2140,6 +2140,13 @@ ngx_http_gzip_ok(ngx_http_request_t *r)
return NGX_DECLINED;
}
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ r->gzip_ok = 1;
+ return NGX_OK;
+ }
+#endif
+
ae = r->headers_in.accept_encoding;
if (ae == NULL) {
return NGX_DECLINED;
@@ -2484,6 +2491,9 @@ ngx_http_subrequest(ngx_http_request_t *r,
#if (NGX_HTTP_V2)
sr->stream = r->stream;
#endif
+#if (NGX_HTTP_SPDY)
+ sr->spdy_stream = r->spdy_stream;
+#endif
sr->method = NGX_HTTP_GET;
sr->http_version = r->http_version;
@@ -4219,11 +4229,15 @@ ngx_http_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
}
if (ngx_strcmp(value[n].data, "spdy") == 0) {
- ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
- "invalid parameter \"spdy\": "
- "ngx_http_spdy_module was superseded "
- "by ngx_http_v2_module");
+#if (NGX_HTTP_SPDY)
+ lsopt.spdy = 1;
continue;
+#else
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "the \"spdy\" parameter requires "
+ "ngx_http_spdy_module");
+ return NGX_CONF_ERROR;
+#endif
}
if (ngx_strncmp(value[n].data, "so_keepalive=", 13) == 0) {
diff --git a/src/http/ngx_http_core_module.h b/src/http/ngx_http_core_module.h
index 6c446a0..434d33e 100644
--- a/src/http/ngx_http_core_module.h
+++ b/src/http/ngx_http_core_module.h
@@ -82,6 +82,9 @@ typedef struct {
#if (NGX_HTTP_V2)
unsigned http2:1;
#endif
+#if (NGX_HTTP_SPDY)
+ unsigned spdy:1;
+#endif
#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
unsigned ipv6only:1;
#endif
@@ -251,6 +254,9 @@ struct ngx_http_addr_conf_s {
#if (NGX_HTTP_V2)
unsigned http2:1;
#endif
+#if (NGX_HTTP_SPDY)
+ unsigned spdy:1;
+#endif
unsigned proxy_protocol:1;
};
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 7d6cada..90c14b9 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -312,6 +312,11 @@ ngx_http_init_connection(ngx_connection_t *c)
rev->handler = ngx_http_wait_request_handler;
c->write->handler = ngx_http_empty_handler;
+#if (NGX_HTTP_SPDY)
+ if (hc->addr_conf->spdy) {
+ rev->handler = ngx_http_spdy_init;
+ }
+#endif
#if (NGX_HTTP_V2)
if (hc->addr_conf->http2) {
rev->handler = ngx_http_v2_init;
@@ -797,6 +802,34 @@ ngx_http_ssl_handshake_handler(ngx_connection_t *c)
}
#endif
+#if (NGX_HTTP_SPDY \
+ && (defined TLSEXT_TYPE_application_layer_protocol_negotiation \
+ || defined TLSEXT_TYPE_next_proto_neg))
+ {
+ unsigned int len;
+ const unsigned char *data;
+ static const ngx_str_t spdy = ngx_string(NGX_SPDY_NPN_NEGOTIATED);
+
+#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
+ SSL_get0_alpn_selected(c->ssl->connection, &data, &len);
+
+#ifdef TLSEXT_TYPE_next_proto_neg
+ if (len == 0) {
+ SSL_get0_next_proto_negotiated(c->ssl->connection, &data, &len);
+ }
+#endif
+
+#else /* TLSEXT_TYPE_next_proto_neg */
+ SSL_get0_next_proto_negotiated(c->ssl->connection, &data, &len);
+#endif
+
+ if (len == spdy.len && ngx_strncmp(data, spdy.data, spdy.len) == 0) {
+ ngx_http_spdy_init(c->read);
+ return;
+ }
+ }
+#endif
+
c->log->action = "waiting for request";
c->read->handler = ngx_http_wait_request_handler;
@@ -2513,6 +2546,12 @@ ngx_http_finalize_connection(ngx_http_request_t *r)
return;
}
#endif
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ ngx_http_close_request(r, 0);
+ return;
+ }
+#endif
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
@@ -2732,6 +2771,18 @@ ngx_http_test_reading(ngx_http_request_t *r)
}
#endif
+#if (NGX_HTTP_SPDY)
+
+ if (r->spdy_stream) {
+ if (c->error) {
+ err = 0;
+ goto closed;
+ }
+
+ return;
+ }
+
+#endif
#if (NGX_HAVE_KQUEUE)
@@ -3401,6 +3452,12 @@ ngx_http_close_request(ngx_http_request_t *r, ngx_int_t rc)
return;
}
#endif
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ ngx_http_spdy_close_stream(r->spdy_stream, rc);
+ return;
+ }
+#endif
ngx_http_free_request(r, rc);
ngx_http_close_connection(c);
diff --git a/src/http/ngx_http_request.h b/src/http/ngx_http_request.h
index cfde7dc..c7412be 100644
--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -439,6 +439,9 @@ struct ngx_http_request_s {
#if (NGX_HTTP_V2)
ngx_http_v2_stream_t *stream;
#endif
+#if (NGX_HTTP_SPDY)
+ ngx_http_spdy_stream_t *spdy_stream;
+#endif
ngx_http_log_handler_pt log_handler;
diff --git a/src/http/ngx_http_request_body.c b/src/http/ngx_http_request_body.c
index 0641329..a40507d 100644
--- a/src/http/ngx_http_request_body.c
+++ b/src/http/ngx_http_request_body.c
@@ -52,6 +52,12 @@ ngx_http_read_client_request_body(ngx_http_request_t *r,
goto done;
}
#endif
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ rc = ngx_http_spdy_read_request_body(r, post_handler);
+ goto done;
+ }
+#endif
if (ngx_http_test_expect(r) != NGX_OK) {
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
@@ -524,6 +530,12 @@ ngx_http_discard_request_body(ngx_http_request_t *r)
return NGX_OK;
}
#endif
+#if (NGX_HTTP_SPDY)
+ if (r->spdy_stream) {
+ r->spdy_stream->skip_data = 1;
+ return NGX_OK;
+ }
+#endif
if (ngx_http_test_expect(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
diff --git a/src/http/ngx_http_spdy.c b/src/http/ngx_http_spdy.c
new file mode 100644
index 0000000..21c5217
--- /dev/null
+++ b/src/http/ngx_http_spdy.c
@@ -0,0 +1,3701 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ * Copyright (C) Valentin V. Bartenev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+#include <ngx_http_spdy_module.h>
+
+#include <zlib.h>
+
+
+#if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
+
+#define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
+ *(uint32_t *) m == (c3 << 24 | c2 << 16 | c1 << 8 | c0) \
+ && m[4] == c4
+
+#else
+
+#define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
+ m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 && m[4] == c4
+
+#endif
+
+
+#if (NGX_HAVE_NONALIGNED)
+
+#define ngx_spdy_frame_parse_uint16(p) ntohs(*(uint16_t *) (p))
+#define ngx_spdy_frame_parse_uint32(p) ntohl(*(uint32_t *) (p))
+
+#else
+
+#define ngx_spdy_frame_parse_uint16(p) ((p)[0] << 8 | (p)[1])
+#define ngx_spdy_frame_parse_uint32(p) \
+ ((p)[0] << 24 | (p)[1] << 16 | (p)[2] << 8 | (p)[3])
+
+#endif
+
+#define ngx_spdy_frame_parse_sid(p) \
+ (ngx_spdy_frame_parse_uint32(p) & 0x7fffffff)
+#define ngx_spdy_frame_parse_delta(p) \
+ (ngx_spdy_frame_parse_uint32(p) & 0x7fffffff)
+
+
+#define ngx_spdy_ctl_frame_check(h) \
+ (((h) & 0xffff0000) == ngx_spdy_ctl_frame_head(0))
+#define ngx_spdy_data_frame_check(h) \
+ (!((h) & (uint32_t) NGX_SPDY_CTL_BIT << 31))
+
+#define ngx_spdy_ctl_frame_type(h) ((h) & 0x0000ffff)
+#define ngx_spdy_frame_flags(p) ((p) >> 24)
+#define ngx_spdy_frame_length(p) ((p) & 0x00ffffff)
+#define ngx_spdy_frame_id(p) ((p) & 0x00ffffff)
+
+
+#define NGX_SPDY_SKIP_HEADERS_BUFFER_SIZE 4096
+#define NGX_SPDY_CTL_FRAME_BUFFER_SIZE 16
+
+#define NGX_SPDY_PROTOCOL_ERROR 1
+#define NGX_SPDY_INVALID_STREAM 2
+#define NGX_SPDY_REFUSED_STREAM 3
+#define NGX_SPDY_UNSUPPORTED_VERSION 4
+#define NGX_SPDY_CANCEL 5
+#define NGX_SPDY_INTERNAL_ERROR 6
+#define NGX_SPDY_FLOW_CONTROL_ERROR 7
+#define NGX_SPDY_STREAM_IN_USE 8
+#define NGX_SPDY_STREAM_ALREADY_CLOSED 9
+/* deprecated 10 */
+#define NGX_SPDY_FRAME_TOO_LARGE 11
+
+#define NGX_SPDY_SETTINGS_MAX_STREAMS 4
+#define NGX_SPDY_SETTINGS_INIT_WINDOW 7
+
+#define NGX_SPDY_SETTINGS_FLAG_PERSIST 0x01
+#define NGX_SPDY_SETTINGS_FLAG_PERSISTED 0x02
+
+#define NGX_SPDY_MAX_WINDOW NGX_MAX_INT32_VALUE
+#define NGX_SPDY_CONNECTION_WINDOW 65536
+#define NGX_SPDY_INIT_STREAM_WINDOW 65536
+#define NGX_SPDY_STREAM_WINDOW NGX_SPDY_MAX_WINDOW
+
+typedef struct {
+ ngx_uint_t hash;
+ u_char len;
+ u_char header[7];
+ ngx_int_t (*handler)(ngx_http_request_t *r);
+} ngx_http_spdy_request_header_t;
+
+
+static void ngx_http_spdy_read_handler(ngx_event_t *rev);
+static void ngx_http_spdy_write_handler(ngx_event_t *wev);
+static void ngx_http_spdy_handle_connection(ngx_http_spdy_connection_t *sc);
+
+static u_char *ngx_http_spdy_proxy_protocol(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_head(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_syn_stream(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_headers(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_headers_skip(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_headers_error(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_window_update(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_data(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_read_data(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_rst_stream(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_ping(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_skip(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_settings(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_complete(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end);
+static u_char *ngx_http_spdy_state_save(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end, ngx_http_spdy_handler_pt handler);
+
+static u_char *ngx_http_spdy_state_inflate_error(
+ ngx_http_spdy_connection_t *sc, int rc);
+static u_char *ngx_http_spdy_state_protocol_error(
+ ngx_http_spdy_connection_t *sc);
+static u_char *ngx_http_spdy_state_internal_error(
+ ngx_http_spdy_connection_t *sc);
+
+static ngx_int_t ngx_http_spdy_send_window_update(
+ ngx_http_spdy_connection_t *sc, ngx_uint_t sid, ngx_uint_t delta);
+static ngx_int_t ngx_http_spdy_send_rst_stream(ngx_http_spdy_connection_t *sc,
+ ngx_uint_t sid, ngx_uint_t status, ngx_uint_t priority);
+static ngx_int_t ngx_http_spdy_send_settings(ngx_http_spdy_connection_t *sc);
+static ngx_int_t ngx_http_spdy_settings_frame_handler(
+ ngx_http_spdy_connection_t *sc, ngx_http_spdy_out_frame_t *frame);
+static ngx_http_spdy_out_frame_t *ngx_http_spdy_get_ctl_frame(
+ ngx_http_spdy_connection_t *sc, size_t size, ngx_uint_t priority);
+static ngx_int_t ngx_http_spdy_ctl_frame_handler(
+ ngx_http_spdy_connection_t *sc, ngx_http_spdy_out_frame_t *frame);
+
+static ngx_http_spdy_stream_t *ngx_http_spdy_create_stream(
+ ngx_http_spdy_connection_t *sc, ngx_uint_t id, ngx_uint_t priority);
+static ngx_http_spdy_stream_t *ngx_http_spdy_get_stream_by_id(
+ ngx_http_spdy_connection_t *sc, ngx_uint_t sid);
+#define ngx_http_spdy_streams_index_size(sscf) (sscf->streams_index_mask + 1)
+#define ngx_http_spdy_stream_index(sscf, sid) \
+ ((sid >> 1) & sscf->streams_index_mask)
+
+static ngx_int_t ngx_http_spdy_parse_header(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_alloc_large_header_buffer(ngx_http_request_t *r);
+
+static ngx_int_t ngx_http_spdy_handle_request_header(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_method(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_scheme(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_host(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_path(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_parse_version(ngx_http_request_t *r);
+
+static ngx_int_t ngx_http_spdy_construct_request_line(ngx_http_request_t *r);
+static void ngx_http_spdy_run_request(ngx_http_request_t *r);
+static ngx_int_t ngx_http_spdy_init_request_body(ngx_http_request_t *r);
+
+static ngx_int_t ngx_http_spdy_terminate_stream(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_stream_t *stream, ngx_uint_t status);
+
+static void ngx_http_spdy_close_stream_handler(ngx_event_t *ev);
+
+static void ngx_http_spdy_handle_connection_handler(ngx_event_t *rev);
+static void ngx_http_spdy_keepalive_handler(ngx_event_t *rev);
+static void ngx_http_spdy_finalize_connection(ngx_http_spdy_connection_t *sc,
+ ngx_int_t rc);
+
+static ngx_int_t ngx_http_spdy_adjust_windows(ngx_http_spdy_connection_t *sc,
+ ssize_t delta);
+
+static void ngx_http_spdy_pool_cleanup(void *data);
+
+static void *ngx_http_spdy_zalloc(void *opaque, u_int items, u_int size);
+static void ngx_http_spdy_zfree(void *opaque, void *address);
+
+
+static const u_char ngx_http_spdy_dict[] = {
+ 0x00, 0x00, 0x00, 0x07, 0x6f, 0x70, 0x74, 0x69, /* - - - - o p t i */
+ 0x6f, 0x6e, 0x73, 0x00, 0x00, 0x00, 0x04, 0x68, /* o n s - - - - h */
+ 0x65, 0x61, 0x64, 0x00, 0x00, 0x00, 0x04, 0x70, /* e a d - - - - p */
+ 0x6f, 0x73, 0x74, 0x00, 0x00, 0x00, 0x03, 0x70, /* o s t - - - - p */
+ 0x75, 0x74, 0x00, 0x00, 0x00, 0x06, 0x64, 0x65, /* u t - - - - d e */
+ 0x6c, 0x65, 0x74, 0x65, 0x00, 0x00, 0x00, 0x05, /* l e t e - - - - */
+ 0x74, 0x72, 0x61, 0x63, 0x65, 0x00, 0x00, 0x00, /* t r a c e - - - */
+ 0x06, 0x61, 0x63, 0x63, 0x65, 0x70, 0x74, 0x00, /* - a c c e p t - */
+ 0x00, 0x00, 0x0e, 0x61, 0x63, 0x63, 0x65, 0x70, /* - - - a c c e p */
+ 0x74, 0x2d, 0x63, 0x68, 0x61, 0x72, 0x73, 0x65, /* t - c h a r s e */
+ 0x74, 0x00, 0x00, 0x00, 0x0f, 0x61, 0x63, 0x63, /* t - - - - a c c */
+ 0x65, 0x70, 0x74, 0x2d, 0x65, 0x6e, 0x63, 0x6f, /* e p t - e n c o */
+ 0x64, 0x69, 0x6e, 0x67, 0x00, 0x00, 0x00, 0x0f, /* d i n g - - - - */
+ 0x61, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x6c, /* a c c e p t - l */
+ 0x61, 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65, 0x00, /* a n g u a g e - */
+ 0x00, 0x00, 0x0d, 0x61, 0x63, 0x63, 0x65, 0x70, /* - - - a c c e p */
+ 0x74, 0x2d, 0x72, 0x61, 0x6e, 0x67, 0x65, 0x73, /* t - r a n g e s */
+ 0x00, 0x00, 0x00, 0x03, 0x61, 0x67, 0x65, 0x00, /* - - - - a g e - */
+ 0x00, 0x00, 0x05, 0x61, 0x6c, 0x6c, 0x6f, 0x77, /* - - - a l l o w */
+ 0x00, 0x00, 0x00, 0x0d, 0x61, 0x75, 0x74, 0x68, /* - - - - a u t h */
+ 0x6f, 0x72, 0x69, 0x7a, 0x61, 0x74, 0x69, 0x6f, /* o r i z a t i o */
+ 0x6e, 0x00, 0x00, 0x00, 0x0d, 0x63, 0x61, 0x63, /* n - - - - c a c */
+ 0x68, 0x65, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, /* h e - c o n t r */
+ 0x6f, 0x6c, 0x00, 0x00, 0x00, 0x0a, 0x63, 0x6f, /* o l - - - - c o */
+ 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, /* n n e c t i o n */
+ 0x00, 0x00, 0x00, 0x0c, 0x63, 0x6f, 0x6e, 0x74, /* - - - - c o n t */
+ 0x65, 0x6e, 0x74, 0x2d, 0x62, 0x61, 0x73, 0x65, /* e n t - b a s e */
+ 0x00, 0x00, 0x00, 0x10, 0x63, 0x6f, 0x6e, 0x74, /* - - - - c o n t */
+ 0x65, 0x6e, 0x74, 0x2d, 0x65, 0x6e, 0x63, 0x6f, /* e n t - e n c o */
+ 0x64, 0x69, 0x6e, 0x67, 0x00, 0x00, 0x00, 0x10, /* d i n g - - - - */
+ 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, /* c o n t e n t - */
+ 0x6c, 0x61, 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65, /* l a n g u a g e */
+ 0x00, 0x00, 0x00, 0x0e, 0x63, 0x6f, 0x6e, 0x74, /* - - - - c o n t */
+ 0x65, 0x6e, 0x74, 0x2d, 0x6c, 0x65, 0x6e, 0x67, /* e n t - l e n g */
+ 0x74, 0x68, 0x00, 0x00, 0x00, 0x10, 0x63, 0x6f, /* t h - - - - c o */
+ 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x6c, 0x6f, /* n t e n t - l o */
+ 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x00, 0x00, /* c a t i o n - - */
+ 0x00, 0x0b, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, /* - - c o n t e n */
+ 0x74, 0x2d, 0x6d, 0x64, 0x35, 0x00, 0x00, 0x00, /* t - m d 5 - - - */
+ 0x0d, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, /* - c o n t e n t */
+ 0x2d, 0x72, 0x61, 0x6e, 0x67, 0x65, 0x00, 0x00, /* - r a n g e - - */
+ 0x00, 0x0c, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, /* - - c o n t e n */
+ 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x00, 0x00, /* t - t y p e - - */
+ 0x00, 0x04, 0x64, 0x61, 0x74, 0x65, 0x00, 0x00, /* - - d a t e - - */
+ 0x00, 0x04, 0x65, 0x74, 0x61, 0x67, 0x00, 0x00, /* - - e t a g - - */
+ 0x00, 0x06, 0x65, 0x78, 0x70, 0x65, 0x63, 0x74, /* - - e x p e c t */
+ 0x00, 0x00, 0x00, 0x07, 0x65, 0x78, 0x70, 0x69, /* - - - - e x p i */
+ 0x72, 0x65, 0x73, 0x00, 0x00, 0x00, 0x04, 0x66, /* r e s - - - - f */
+ 0x72, 0x6f, 0x6d, 0x00, 0x00, 0x00, 0x04, 0x68, /* r o m - - - - h */
+ 0x6f, 0x73, 0x74, 0x00, 0x00, 0x00, 0x08, 0x69, /* o s t - - - - i */
+ 0x66, 0x2d, 0x6d, 0x61, 0x74, 0x63, 0x68, 0x00, /* f - m a t c h - */
+ 0x00, 0x00, 0x11, 0x69, 0x66, 0x2d, 0x6d, 0x6f, /* - - - i f - m o */
+ 0x64, 0x69, 0x66, 0x69, 0x65, 0x64, 0x2d, 0x73, /* d i f i e d - s */
+ 0x69, 0x6e, 0x63, 0x65, 0x00, 0x00, 0x00, 0x0d, /* i n c e - - - - */
+ 0x69, 0x66, 0x2d, 0x6e, 0x6f, 0x6e, 0x65, 0x2d, /* i f - n o n e - */
+ 0x6d, 0x61, 0x74, 0x63, 0x68, 0x00, 0x00, 0x00, /* m a t c h - - - */
+ 0x08, 0x69, 0x66, 0x2d, 0x72, 0x61, 0x6e, 0x67, /* - i f - r a n g */
+ 0x65, 0x00, 0x00, 0x00, 0x13, 0x69, 0x66, 0x2d, /* e - - - - i f - */
+ 0x75, 0x6e, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69, /* u n m o d i f i */
+ 0x65, 0x64, 0x2d, 0x73, 0x69, 0x6e, 0x63, 0x65, /* e d - s i n c e */
+ 0x00, 0x00, 0x00, 0x0d, 0x6c, 0x61, 0x73, 0x74, /* - - - - l a s t */
+ 0x2d, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69, 0x65, /* - m o d i f i e */
+ 0x64, 0x00, 0x00, 0x00, 0x08, 0x6c, 0x6f, 0x63, /* d - - - - l o c */
+ 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x00, 0x00, 0x00, /* a t i o n - - - */
+ 0x0c, 0x6d, 0x61, 0x78, 0x2d, 0x66, 0x6f, 0x72, /* - m a x - f o r */
+ 0x77, 0x61, 0x72, 0x64, 0x73, 0x00, 0x00, 0x00, /* w a r d s - - - */
+ 0x06, 0x70, 0x72, 0x61, 0x67, 0x6d, 0x61, 0x00, /* - p r a g m a - */
+ 0x00, 0x00, 0x12, 0x70, 0x72, 0x6f, 0x78, 0x79, /* - - - p r o x y */
+ 0x2d, 0x61, 0x75, 0x74, 0x68, 0x65, 0x6e, 0x74, /* - a u t h e n t */
+ 0x69, 0x63, 0x61, 0x74, 0x65, 0x00, 0x00, 0x00, /* i c a t e - - - */
+ 0x13, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2d, 0x61, /* - p r o x y - a */
+ 0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x7a, 0x61, /* u t h o r i z a */
+ 0x74, 0x69, 0x6f, 0x6e, 0x00, 0x00, 0x00, 0x05, /* t i o n - - - - */
+ 0x72, 0x61, 0x6e, 0x67, 0x65, 0x00, 0x00, 0x00, /* r a n g e - - - */
+ 0x07, 0x72, 0x65, 0x66, 0x65, 0x72, 0x65, 0x72, /* - r e f e r e r */
+ 0x00, 0x00, 0x00, 0x0b, 0x72, 0x65, 0x74, 0x72, /* - - - - r e t r */
+ 0x79, 0x2d, 0x61, 0x66, 0x74, 0x65, 0x72, 0x00, /* y - a f t e r - */
+ 0x00, 0x00, 0x06, 0x73, 0x65, 0x72, 0x76, 0x65, /* - - - s e r v e */
+ 0x72, 0x00, 0x00, 0x00, 0x02, 0x74, 0x65, 0x00, /* r - - - - t e - */
+ 0x00, 0x00, 0x07, 0x74, 0x72, 0x61, 0x69, 0x6c, /* - - - t r a i l */
+ 0x65, 0x72, 0x00, 0x00, 0x00, 0x11, 0x74, 0x72, /* e r - - - - t r */
+ 0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x2d, 0x65, /* a n s f e r - e */
+ 0x6e, 0x63, 0x6f, 0x64, 0x69, 0x6e, 0x67, 0x00, /* n c o d i n g - */
+ 0x00, 0x00, 0x07, 0x75, 0x70, 0x67, 0x72, 0x61, /* - - - u p g r a */
+ 0x64, 0x65, 0x00, 0x00, 0x00, 0x0a, 0x75, 0x73, /* d e - - - - u s */
+ 0x65, 0x72, 0x2d, 0x61, 0x67, 0x65, 0x6e, 0x74, /* e r - a g e n t */
+ 0x00, 0x00, 0x00, 0x04, 0x76, 0x61, 0x72, 0x79, /* - - - - v a r y */
+ 0x00, 0x00, 0x00, 0x03, 0x76, 0x69, 0x61, 0x00, /* - - - - v i a - */
+ 0x00, 0x00, 0x07, 0x77, 0x61, 0x72, 0x6e, 0x69, /* - - - w a r n i */
+ 0x6e, 0x67, 0x00, 0x00, 0x00, 0x10, 0x77, 0x77, /* n g - - - - w w */
+ 0x77, 0x2d, 0x61, 0x75, 0x74, 0x68, 0x65, 0x6e, /* w - a u t h e n */
+ 0x74, 0x69, 0x63, 0x61, 0x74, 0x65, 0x00, 0x00, /* t i c a t e - - */
+ 0x00, 0x06, 0x6d, 0x65, 0x74, 0x68, 0x6f, 0x64, /* - - m e t h o d */
+ 0x00, 0x00, 0x00, 0x03, 0x67, 0x65, 0x74, 0x00, /* - - - - g e t - */
+ 0x00, 0x00, 0x06, 0x73, 0x74, 0x61, 0x74, 0x75, /* - - - s t a t u */
+ 0x73, 0x00, 0x00, 0x00, 0x06, 0x32, 0x30, 0x30, /* s - - - - 2 0 0 */
+ 0x20, 0x4f, 0x4b, 0x00, 0x00, 0x00, 0x07, 0x76, /* - O K - - - - v */
+ 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x00, 0x00, /* e r s i o n - - */
+ 0x00, 0x08, 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, /* - - H T T P - 1 */
+ 0x2e, 0x31, 0x00, 0x00, 0x00, 0x03, 0x75, 0x72, /* - 1 - - - - u r */
+ 0x6c, 0x00, 0x00, 0x00, 0x06, 0x70, 0x75, 0x62, /* l - - - - p u b */
+ 0x6c, 0x69, 0x63, 0x00, 0x00, 0x00, 0x0a, 0x73, /* l i c - - - - s */
+ 0x65, 0x74, 0x2d, 0x63, 0x6f, 0x6f, 0x6b, 0x69, /* e t - c o o k i */
+ 0x65, 0x00, 0x00, 0x00, 0x0a, 0x6b, 0x65, 0x65, /* e - - - - k e e */
+ 0x70, 0x2d, 0x61, 0x6c, 0x69, 0x76, 0x65, 0x00, /* p - a l i v e - */
+ 0x00, 0x00, 0x06, 0x6f, 0x72, 0x69, 0x67, 0x69, /* - - - o r i g i */
+ 0x6e, 0x31, 0x30, 0x30, 0x31, 0x30, 0x31, 0x32, /* n 1 0 0 1 0 1 2 */
+ 0x30, 0x31, 0x32, 0x30, 0x32, 0x32, 0x30, 0x35, /* 0 1 2 0 2 2 0 5 */
+ 0x32, 0x30, 0x36, 0x33, 0x30, 0x30, 0x33, 0x30, /* 2 0 6 3 0 0 3 0 */
+ 0x32, 0x33, 0x30, 0x33, 0x33, 0x30, 0x34, 0x33, /* 2 3 0 3 3 0 4 3 */
+ 0x30, 0x35, 0x33, 0x30, 0x36, 0x33, 0x30, 0x37, /* 0 5 3 0 6 3 0 7 */
+ 0x34, 0x30, 0x32, 0x34, 0x30, 0x35, 0x34, 0x30, /* 4 0 2 4 0 5 4 0 */
+ 0x36, 0x34, 0x30, 0x37, 0x34, 0x30, 0x38, 0x34, /* 6 4 0 7 4 0 8 4 */
+ 0x30, 0x39, 0x34, 0x31, 0x30, 0x34, 0x31, 0x31, /* 0 9 4 1 0 4 1 1 */
+ 0x34, 0x31, 0x32, 0x34, 0x31, 0x33, 0x34, 0x31, /* 4 1 2 4 1 3 4 1 */
+ 0x34, 0x34, 0x31, 0x35, 0x34, 0x31, 0x36, 0x34, /* 4 4 1 5 4 1 6 4 */
+ 0x31, 0x37, 0x35, 0x30, 0x32, 0x35, 0x30, 0x34, /* 1 7 5 0 2 5 0 4 */
+ 0x35, 0x30, 0x35, 0x32, 0x30, 0x33, 0x20, 0x4e, /* 5 0 5 2 0 3 - N */
+ 0x6f, 0x6e, 0x2d, 0x41, 0x75, 0x74, 0x68, 0x6f, /* o n - A u t h o */
+ 0x72, 0x69, 0x74, 0x61, 0x74, 0x69, 0x76, 0x65, /* r i t a t i v e */
+ 0x20, 0x49, 0x6e, 0x66, 0x6f, 0x72, 0x6d, 0x61, /* - I n f o r m a */
+ 0x74, 0x69, 0x6f, 0x6e, 0x32, 0x30, 0x34, 0x20, /* t i o n 2 0 4 - */
+ 0x4e, 0x6f, 0x20, 0x43, 0x6f, 0x6e, 0x74, 0x65, /* N o - C o n t e */
+ 0x6e, 0x74, 0x33, 0x30, 0x31, 0x20, 0x4d, 0x6f, /* n t 3 0 1 - M o */
+ 0x76, 0x65, 0x64, 0x20, 0x50, 0x65, 0x72, 0x6d, /* v e d - P e r m */
+ 0x61, 0x6e, 0x65, 0x6e, 0x74, 0x6c, 0x79, 0x34, /* a n e n t l y 4 */
+ 0x30, 0x30, 0x20, 0x42, 0x61, 0x64, 0x20, 0x52, /* 0 0 - B a d - R */
+ 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x34, 0x30, /* e q u e s t 4 0 */
+ 0x31, 0x20, 0x55, 0x6e, 0x61, 0x75, 0x74, 0x68, /* 1 - U n a u t h */
+ 0x6f, 0x72, 0x69, 0x7a, 0x65, 0x64, 0x34, 0x30, /* o r i z e d 4 0 */
+ 0x33, 0x20, 0x46, 0x6f, 0x72, 0x62, 0x69, 0x64, /* 3 - F o r b i d */
+ 0x64, 0x65, 0x6e, 0x34, 0x30, 0x34, 0x20, 0x4e, /* d e n 4 0 4 - N */
+ 0x6f, 0x74, 0x20, 0x46, 0x6f, 0x75, 0x6e, 0x64, /* o t - F o u n d */
+ 0x35, 0x30, 0x30, 0x20, 0x49, 0x6e, 0x74, 0x65, /* 5 0 0 - I n t e */
+ 0x72, 0x6e, 0x61, 0x6c, 0x20, 0x53, 0x65, 0x72, /* r n a l - S e r */
+ 0x76, 0x65, 0x72, 0x20, 0x45, 0x72, 0x72, 0x6f, /* v e r - E r r o */
+ 0x72, 0x35, 0x30, 0x31, 0x20, 0x4e, 0x6f, 0x74, /* r 5 0 1 - N o t */
+ 0x20, 0x49, 0x6d, 0x70, 0x6c, 0x65, 0x6d, 0x65, /* - I m p l e m e */
+ 0x6e, 0x74, 0x65, 0x64, 0x35, 0x30, 0x33, 0x20, /* n t e d 5 0 3 - */
+ 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x20, /* S e r v i c e - */
+ 0x55, 0x6e, 0x61, 0x76, 0x61, 0x69, 0x6c, 0x61, /* U n a v a i l a */
+ 0x62, 0x6c, 0x65, 0x4a, 0x61, 0x6e, 0x20, 0x46, /* b l e J a n - F */
+ 0x65, 0x62, 0x20, 0x4d, 0x61, 0x72, 0x20, 0x41, /* e b - M a r - A */
+ 0x70, 0x72, 0x20, 0x4d, 0x61, 0x79, 0x20, 0x4a, /* p r - M a y - J */
+ 0x75, 0x6e, 0x20, 0x4a, 0x75, 0x6c, 0x20, 0x41, /* u n - J u l - A */
+ 0x75, 0x67, 0x20, 0x53, 0x65, 0x70, 0x74, 0x20, /* u g - S e p t - */
+ 0x4f, 0x63, 0x74, 0x20, 0x4e, 0x6f, 0x76, 0x20, /* O c t - N o v - */
+ 0x44, 0x65, 0x63, 0x20, 0x30, 0x30, 0x3a, 0x30, /* D e c - 0 0 - 0 */
+ 0x30, 0x3a, 0x30, 0x30, 0x20, 0x4d, 0x6f, 0x6e, /* 0 - 0 0 - M o n */
+ 0x2c, 0x20, 0x54, 0x75, 0x65, 0x2c, 0x20, 0x57, /* - - T u e - - W */
+ 0x65, 0x64, 0x2c, 0x20, 0x54, 0x68, 0x75, 0x2c, /* e d - - T h u - */
+ 0x20, 0x46, 0x72, 0x69, 0x2c, 0x20, 0x53, 0x61, /* - F r i - - S a */
+ 0x74, 0x2c, 0x20, 0x53, 0x75, 0x6e, 0x2c, 0x20, /* t - - S u n - - */
+ 0x47, 0x4d, 0x54, 0x63, 0x68, 0x75, 0x6e, 0x6b, /* G M T c h u n k */
+ 0x65, 0x64, 0x2c, 0x74, 0x65, 0x78, 0x74, 0x2f, /* e d - t e x t - */
+ 0x68, 0x74, 0x6d, 0x6c, 0x2c, 0x69, 0x6d, 0x61, /* h t m l - i m a */
+ 0x67, 0x65, 0x2f, 0x70, 0x6e, 0x67, 0x2c, 0x69, /* g e - p n g - i */
+ 0x6d, 0x61, 0x67, 0x65, 0x2f, 0x6a, 0x70, 0x67, /* m a g e - j p g */
+ 0x2c, 0x69, 0x6d, 0x61, 0x67, 0x65, 0x2f, 0x67, /* - i m a g e - g */
+ 0x69, 0x66, 0x2c, 0x61, 0x70, 0x70, 0x6c, 0x69, /* i f - a p p l i */
+ 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78, /* c a t i o n - x */
+ 0x6d, 0x6c, 0x2c, 0x61, 0x70, 0x70, 0x6c, 0x69, /* m l - a p p l i */
+ 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78, /* c a t i o n - x */
+ 0x68, 0x74, 0x6d, 0x6c, 0x2b, 0x78, 0x6d, 0x6c, /* h t m l - x m l */
+ 0x2c, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x70, 0x6c, /* - t e x t - p l */
+ 0x61, 0x69, 0x6e, 0x2c, 0x74, 0x65, 0x78, 0x74, /* a i n - t e x t */
+ 0x2f, 0x6a, 0x61, 0x76, 0x61, 0x73, 0x63, 0x72, /* - j a v a s c r */
+ 0x69, 0x70, 0x74, 0x2c, 0x70, 0x75, 0x62, 0x6c, /* i p t - p u b l */
+ 0x69, 0x63, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, /* i c p r i v a t */
+ 0x65, 0x6d, 0x61, 0x78, 0x2d, 0x61, 0x67, 0x65, /* e m a x - a g e */
+ 0x3d, 0x67, 0x7a, 0x69, 0x70, 0x2c, 0x64, 0x65, /* - g z i p - d e */
+ 0x66, 0x6c, 0x61, 0x74, 0x65, 0x2c, 0x73, 0x64, /* f l a t e - s d */
+ 0x63, 0x68, 0x63, 0x68, 0x61, 0x72, 0x73, 0x65, /* c h c h a r s e */
+ 0x74, 0x3d, 0x75, 0x74, 0x66, 0x2d, 0x38, 0x63, /* t - u t f - 8 c */
+ 0x68, 0x61, 0x72, 0x73, 0x65, 0x74, 0x3d, 0x69, /* h a r s e t - i */
+ 0x73, 0x6f, 0x2d, 0x38, 0x38, 0x35, 0x39, 0x2d, /* s o - 8 8 5 9 - */
+ 0x31, 0x2c, 0x75, 0x74, 0x66, 0x2d, 0x2c, 0x2a, /* 1 - u t f - - - */
+ 0x2c, 0x65, 0x6e, 0x71, 0x3d, 0x30, 0x2e /* - e n q - 0 - */
+};
+
+
+static ngx_http_spdy_request_header_t ngx_http_spdy_request_headers[] = {
+ { 0, 6, "method", ngx_http_spdy_parse_method },
+ { 0, 6, "scheme", ngx_http_spdy_parse_scheme },
+ { 0, 4, "host", ngx_http_spdy_parse_host },
+ { 0, 4, "path", ngx_http_spdy_parse_path },
+ { 0, 7, "version", ngx_http_spdy_parse_version },
+};
+
+#define NGX_SPDY_REQUEST_HEADERS \
+ (sizeof(ngx_http_spdy_request_headers) \
+ / sizeof(ngx_http_spdy_request_header_t))
+
+
+void
+ngx_http_spdy_init(ngx_event_t *rev)
+{
+ int rc;
+ ngx_connection_t *c;
+ ngx_pool_cleanup_t *cln;
+ ngx_http_connection_t *hc;
+ ngx_http_spdy_srv_conf_t *sscf;
+ ngx_http_spdy_main_conf_t *smcf;
+ ngx_http_spdy_connection_t *sc;
+
+ c = rev->data;
+ hc = c->data;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "init spdy request");
+
+ c->log->action = "processing SPDY";
+
+ smcf = ngx_http_get_module_main_conf(hc->conf_ctx, ngx_http_spdy_module);
+
+ if (smcf->recv_buffer == NULL) {
+ smcf->recv_buffer = ngx_palloc(ngx_cycle->pool, smcf->recv_buffer_size);
+ if (smcf->recv_buffer == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+ }
+
+ sc = ngx_pcalloc(c->pool, sizeof(ngx_http_spdy_connection_t));
+ if (sc == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ sc->connection = c;
+ sc->http_connection = hc;
+
+ sc->send_window = NGX_SPDY_CONNECTION_WINDOW;
+ sc->recv_window = NGX_SPDY_CONNECTION_WINDOW;
+
+ sc->init_window = NGX_SPDY_INIT_STREAM_WINDOW;
+
+ sc->handler = hc->proxy_protocol ? ngx_http_spdy_proxy_protocol
+ : ngx_http_spdy_state_head;
+
+ sc->zstream_in.zalloc = ngx_http_spdy_zalloc;
+ sc->zstream_in.zfree = ngx_http_spdy_zfree;
+ sc->zstream_in.opaque = sc;
+
+ rc = inflateInit(&sc->zstream_in);
+ if (rc != Z_OK) {
+ ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+ "inflateInit() failed: %d", rc);
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ sc->zstream_out.zalloc = ngx_http_spdy_zalloc;
+ sc->zstream_out.zfree = ngx_http_spdy_zfree;
+ sc->zstream_out.opaque = sc;
+
+ sscf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_spdy_module);
+
+ rc = deflateInit2(&sc->zstream_out, (int) sscf->headers_comp,
+ Z_DEFLATED, 11, 4, Z_DEFAULT_STRATEGY);
+
+ if (rc != Z_OK) {
+ ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+ "deflateInit2() failed: %d", rc);
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ rc = deflateSetDictionary(&sc->zstream_out, ngx_http_spdy_dict,
+ sizeof(ngx_http_spdy_dict));
+ if (rc != Z_OK) {
+ ngx_log_error(NGX_LOG_ALERT, c->log, 0,
+ "deflateSetDictionary() failed: %d", rc);
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ sc->pool = ngx_create_pool(sscf->pool_size, sc->connection->log);
+ if (sc->pool == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_pool_cleanup_file_t));
+ if (cln == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ cln->handler = ngx_http_spdy_pool_cleanup;
+ cln->data = sc;
+
+ sc->streams_index = ngx_pcalloc(sc->pool,
+ ngx_http_spdy_streams_index_size(sscf)
+ * sizeof(ngx_http_spdy_stream_t *));
+ if (sc->streams_index == NULL) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ if (ngx_http_spdy_send_settings(sc) == NGX_ERROR) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ if (ngx_http_spdy_send_window_update(sc, 0, NGX_SPDY_MAX_WINDOW
+ - sc->recv_window)
+ == NGX_ERROR)
+ {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ sc->recv_window = NGX_SPDY_MAX_WINDOW;
+
+ ngx_queue_init(&sc->waiting);
+ ngx_queue_init(&sc->posted);
+
+ c->data = sc;
+
+ rev->handler = ngx_http_spdy_read_handler;
+ c->write->handler = ngx_http_spdy_write_handler;
+
+ ngx_http_spdy_read_handler(rev);
+}
+
+
+static void
+ngx_http_spdy_read_handler(ngx_event_t *rev)
+{
+ u_char *p, *end;
+ size_t available;
+ ssize_t n;
+ ngx_connection_t *c;
+ ngx_http_spdy_main_conf_t *smcf;
+ ngx_http_spdy_connection_t *sc;
+
+ c = rev->data;
+ sc = c->data;
+
+ if (rev->timedout) {
+ ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_REQUEST_TIME_OUT);
+ return;
+ }
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "spdy read handler");
+
+ sc->blocked = 1;
+
+ smcf = ngx_http_get_module_main_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ available = smcf->recv_buffer_size - 2 * NGX_SPDY_STATE_BUFFER_SIZE;
+
+ do {
+ p = smcf->recv_buffer;
+
+ ngx_memcpy(p, sc->buffer, NGX_SPDY_STATE_BUFFER_SIZE);
+ end = p + sc->buffer_used;
+
+ n = c->recv(c, end, available);
+
+ if (n == NGX_AGAIN) {
+ break;
+ }
+
+ if (n == 0 && (sc->incomplete || sc->processing)) {
+ ngx_log_error(NGX_LOG_INFO, c->log, 0,
+ "client prematurely closed connection");
+ }
+
+ if (n == 0 || n == NGX_ERROR) {
+ ngx_http_spdy_finalize_connection(sc,
+ NGX_HTTP_CLIENT_CLOSED_REQUEST);
+ return;
+ }
+
+ end += n;
+
+ sc->buffer_used = 0;
+ sc->incomplete = 0;
+
+ do {
+ p = sc->handler(sc, p, end);
+
+ if (p == NULL) {
+ return;
+ }
+
+ } while (p != end);
+
+ } while (rev->ready);
+
+ if (ngx_handle_read_event(rev, 0) != NGX_OK) {
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return;
+ }
+
+ if (sc->last_out && ngx_http_spdy_send_output_queue(sc) == NGX_ERROR) {
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_CLIENT_CLOSED_REQUEST);
+ return;
+ }
+
+ sc->blocked = 0;
+
+ if (sc->processing) {
+ if (rev->timer_set) {
+ ngx_del_timer(rev);
+ }
+ return;
+ }
+
+ ngx_http_spdy_handle_connection(sc);
+}
+
+
+static void
+ngx_http_spdy_write_handler(ngx_event_t *wev)
+{
+ ngx_int_t rc;
+ ngx_queue_t *q;
+ ngx_connection_t *c;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_spdy_connection_t *sc;
+
+ c = wev->data;
+ sc = c->data;
+
+ if (wev->timedout) {
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
+ "spdy write event timed out");
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_CLIENT_CLOSED_REQUEST);
+ return;
+ }
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "spdy write handler");
+
+ sc->blocked = 1;
+
+ rc = ngx_http_spdy_send_output_queue(sc);
+
+ if (rc == NGX_ERROR) {
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_CLIENT_CLOSED_REQUEST);
+ return;
+ }
+
+ while (!ngx_queue_empty(&sc->posted)) {
+ q = ngx_queue_head(&sc->posted);
+
+ ngx_queue_remove(q);
+
+ stream = ngx_queue_data(q, ngx_http_spdy_stream_t, queue);
+
+ stream->handled = 0;
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
+ "run spdy stream %ui", stream->id);
+
+ wev = stream->request->connection->write;
+ wev->handler(wev);
+ }
+
+ sc->blocked = 0;
+
+ if (rc == NGX_AGAIN) {
+ return;
+ }
+
+ ngx_http_spdy_handle_connection(sc);
+}
+
+
+ngx_int_t
+ngx_http_spdy_send_output_queue(ngx_http_spdy_connection_t *sc)
+{
+ int tcp_nodelay;
+ ngx_chain_t *cl;
+ ngx_event_t *wev;
+ ngx_connection_t *c;
+ ngx_http_core_loc_conf_t *clcf;
+ ngx_http_spdy_out_frame_t *out, *frame, *fn;
+
+ c = sc->connection;
+
+ if (c->error) {
+ return NGX_ERROR;
+ }
+
+ wev = c->write;
+
+ if (!wev->ready) {
+ return NGX_OK;
+ }
+
+ cl = NULL;
+ out = NULL;
+
+ for (frame = sc->last_out; frame; frame = fn) {
+ frame->last->next = cl;
+ cl = frame->first;
+
+ fn = frame->next;
+ frame->next = out;
+ out = frame;
+
+ ngx_log_debug5(NGX_LOG_DEBUG_HTTP, c->log, 0,
+ "spdy frame out: %p sid:%ui prio:%ui bl:%d len:%uz",
+ out, out->stream ? out->stream->id : 0, out->priority,
+ out->blocked, out->length);
+ }
+
+ cl = c->send_chain(c, cl, 0);
+
+ if (cl == NGX_CHAIN_ERROR) {
+ goto error;
+ }
+
+ clcf = ngx_http_get_module_loc_conf(sc->http_connection->conf_ctx,
+ ngx_http_core_module);
+
+ if (ngx_handle_write_event(wev, clcf->send_lowat) != NGX_OK) {
+ goto error;
+ }
+
+ if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
+ if (ngx_tcp_push(c->fd) == -1) {
+ ngx_connection_error(c, ngx_socket_errno, ngx_tcp_push_n " failed");
+ goto error;
+ }
+
+ c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
+ tcp_nodelay = ngx_tcp_nodelay_and_tcp_nopush ? 1 : 0;
+
+ } else {
+ tcp_nodelay = 1;
+ }
+
+ if (tcp_nodelay
+ && clcf->tcp_nodelay
+ && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET)
+ {
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
+
+ if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
+ (const void *) &tcp_nodelay, sizeof(int))
+ == -1)
+ {
+#if (NGX_SOLARIS)
+ /* Solaris returns EINVAL if a socket has been shut down */
+ c->log_error = NGX_ERROR_IGNORE_EINVAL;
+#endif
+
+ ngx_connection_error(c, ngx_socket_errno,
+ "setsockopt(TCP_NODELAY) failed");
+
+ c->log_error = NGX_ERROR_INFO;
+ goto error;
+ }
+
+ c->tcp_nodelay = NGX_TCP_NODELAY_SET;
+ }
+
+ if (cl) {
+ ngx_add_timer(wev, clcf->send_timeout);
+
+ } else {
+ if (wev->timer_set) {
+ ngx_del_timer(wev);
+ }
+ }
+
+ for ( /* void */ ; out; out = fn) {
+ fn = out->next;
+
+ if (out->handler(sc, out) != NGX_OK) {
+ out->blocked = 1;
+ out->priority = NGX_SPDY_HIGHEST_PRIORITY;
+ break;
+ }
+
+ ngx_log_debug4(NGX_LOG_DEBUG_HTTP, c->log, 0,
+ "spdy frame sent: %p sid:%ui bl:%d len:%uz",
+ out, out->stream ? out->stream->id : 0,
+ out->blocked, out->length);
+ }
+
+ frame = NULL;
+
+ for ( /* void */ ; out; out = fn) {
+ fn = out->next;
+ out->next = frame;
+ frame = out;
+ }
+
+ sc->last_out = frame;
+
+ return NGX_OK;
+
+error:
+
+ c->error = 1;
+
+ if (!sc->blocked) {
+ ngx_post_event(wev, &ngx_posted_events);
+ }
+
+ return NGX_ERROR;
+}
+
+
+static void
+ngx_http_spdy_handle_connection(ngx_http_spdy_connection_t *sc)
+{
+ ngx_connection_t *c;
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ if (sc->last_out || sc->processing) {
+ return;
+ }
+
+ c = sc->connection;
+
+ if (c->error) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ if (c->buffered) {
+ return;
+ }
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+ if (sc->incomplete) {
+ ngx_add_timer(c->read, sscf->recv_timeout);
+ return;
+ }
+
+ if (ngx_terminate || ngx_exiting) {
+ ngx_http_close_connection(c);
+ return;
+ }
+
+ ngx_destroy_pool(sc->pool);
+
+ sc->pool = NULL;
+ sc->free_ctl_frames = NULL;
+ sc->free_fake_connections = NULL;
+
+#if (NGX_HTTP_SSL)
+ if (c->ssl) {
+ ngx_ssl_free_buffer(c);
+ }
+#endif
+
+ c->destroyed = 1;
+ c->idle = 1;
+ ngx_reusable_connection(c, 1);
+
+ c->write->handler = ngx_http_empty_handler;
+ c->read->handler = ngx_http_spdy_keepalive_handler;
+
+ if (c->write->timer_set) {
+ ngx_del_timer(c->write);
+ }
+
+ ngx_add_timer(c->read, sscf->keepalive_timeout);
+}
+
+
+static u_char *
+ngx_http_spdy_proxy_protocol(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ ngx_log_t *log;
+
+ log = sc->connection->log;
+ log->action = "reading PROXY protocol";
+
+ pos = ngx_proxy_protocol_read(sc->connection, pos, end);
+
+ log->action = "processing SPDY";
+
+ if (pos == NULL) {
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_head(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ uint32_t head, flen;
+ ngx_uint_t type;
+
+ if (end - pos < NGX_SPDY_FRAME_HEADER_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_head);
+ }
+
+ head = ngx_spdy_frame_parse_uint32(pos);
+
+ pos += sizeof(uint32_t);
+
+ flen = ngx_spdy_frame_parse_uint32(pos);
+
+ sc->flags = ngx_spdy_frame_flags(flen);
+ sc->length = ngx_spdy_frame_length(flen);
+
+ pos += sizeof(uint32_t);
+
+ ngx_log_debug3(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "process spdy frame head:%08XD f:%Xd l:%uz",
+ head, sc->flags, sc->length);
+
+ if (ngx_spdy_ctl_frame_check(head)) {
+ type = ngx_spdy_ctl_frame_type(head);
+
+ switch (type) {
+
+ case NGX_SPDY_SYN_STREAM:
+ return ngx_http_spdy_state_syn_stream(sc, pos, end);
+
+ case NGX_SPDY_SYN_REPLY:
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent unexpected SYN_REPLY frame");
+ return ngx_http_spdy_state_protocol_error(sc);
+
+ case NGX_SPDY_RST_STREAM:
+ return ngx_http_spdy_state_rst_stream(sc, pos, end);
+
+ case NGX_SPDY_SETTINGS:
+ return ngx_http_spdy_state_settings(sc, pos, end);
+
+ case NGX_SPDY_PING:
+ return ngx_http_spdy_state_ping(sc, pos, end);
+
+ case NGX_SPDY_GOAWAY:
+ return ngx_http_spdy_state_skip(sc, pos, end); /* TODO */
+
+ case NGX_SPDY_HEADERS:
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent unexpected HEADERS frame");
+ return ngx_http_spdy_state_protocol_error(sc);
+
+ case NGX_SPDY_WINDOW_UPDATE:
+ return ngx_http_spdy_state_window_update(sc, pos, end);
+
+ default:
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy control frame with unknown type %ui", type);
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+ }
+
+ if (ngx_spdy_data_frame_check(head)) {
+ sc->stream = ngx_http_spdy_get_stream_by_id(sc, head);
+ return ngx_http_spdy_state_data(sc, pos, end);
+ }
+
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent invalid frame");
+
+ return ngx_http_spdy_state_protocol_error(sc);
+}
+
+
+static u_char *
+ngx_http_spdy_state_syn_stream(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ ngx_uint_t sid, prio;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ if (end - pos < NGX_SPDY_SYN_STREAM_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_syn_stream);
+ }
+
+ if (sc->length <= NGX_SPDY_SYN_STREAM_SIZE) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent SYN_STREAM frame with incorrect length %uz",
+ sc->length);
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ sc->length -= NGX_SPDY_SYN_STREAM_SIZE;
+
+ sid = ngx_spdy_frame_parse_sid(pos);
+ prio = pos[8] >> 5;
+
+ pos += NGX_SPDY_SYN_STREAM_SIZE;
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy SYN_STREAM frame sid:%ui prio:%ui", sid, prio);
+
+ if (sid % 2 == 0 || sid <= sc->last_sid) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent SYN_STREAM frame "
+ "with invalid Stream-ID %ui", sid);
+
+ stream = ngx_http_spdy_get_stream_by_id(sc, sid);
+
+ if (stream) {
+ if (ngx_http_spdy_terminate_stream(sc, stream,
+ NGX_SPDY_PROTOCOL_ERROR)
+ != NGX_OK)
+ {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+ }
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ sc->last_sid = sid;
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ if (sc->processing >= sscf->concurrent_streams) {
+
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "concurrent streams exceeded %ui", sc->processing);
+
+ if (ngx_http_spdy_send_rst_stream(sc, sid, NGX_SPDY_REFUSED_STREAM,
+ prio)
+ != NGX_OK)
+ {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+ }
+
+ stream = ngx_http_spdy_create_stream(sc, sid, prio);
+ if (stream == NULL) {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ stream->in_closed = (sc->flags & NGX_SPDY_FLAG_FIN) ? 1 : 0;
+
+ stream->request->request_length = NGX_SPDY_FRAME_HEADER_SIZE
+ + NGX_SPDY_SYN_STREAM_SIZE
+ + sc->length;
+
+ sc->stream = stream;
+
+ return ngx_http_spdy_state_headers(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_headers(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ int z;
+ size_t size;
+ ngx_buf_t *buf;
+ ngx_int_t rc;
+ ngx_http_request_t *r;
+
+ size = end - pos;
+
+ if (size == 0) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers);
+ }
+
+ if (size > sc->length) {
+ size = sc->length;
+ }
+
+ r = sc->stream->request;
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "process spdy header block %uz of %uz", size, sc->length);
+
+ buf = r->header_in;
+
+ sc->zstream_in.next_in = pos;
+ sc->zstream_in.avail_in = size;
+ sc->zstream_in.next_out = buf->last;
+
+ /* one byte is reserved for null-termination of the last header value */
+ sc->zstream_in.avail_out = buf->end - buf->last - 1;
+
+ z = inflate(&sc->zstream_in, Z_NO_FLUSH);
+
+ if (z == Z_NEED_DICT) {
+ z = inflateSetDictionary(&sc->zstream_in, ngx_http_spdy_dict,
+ sizeof(ngx_http_spdy_dict));
+
+ if (z != Z_OK) {
+ if (z == Z_DATA_ERROR) {
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "client sent SYN_STREAM frame with header "
+ "block encoded using wrong dictionary: %ul",
+ (u_long) sc->zstream_in.adler);
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+ "inflateSetDictionary() failed: %d", z);
+
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy inflateSetDictionary(): %d", z);
+
+ z = sc->zstream_in.avail_in ? inflate(&sc->zstream_in, Z_NO_FLUSH)
+ : Z_OK;
+ }
+
+ ngx_log_debug5(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy inflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
+ sc->zstream_in.next_in, sc->zstream_in.next_out,
+ sc->zstream_in.avail_in, sc->zstream_in.avail_out,
+ z);
+
+ if (z != Z_OK) {
+ return ngx_http_spdy_state_inflate_error(sc, z);
+ }
+
+ sc->length -= sc->zstream_in.next_in - pos;
+ pos = sc->zstream_in.next_in;
+
+ buf->last = sc->zstream_in.next_out;
+
+ if (r->headers_in.headers.part.elts == NULL) {
+
+ if (buf->last - buf->pos < NGX_SPDY_NV_NUM_SIZE) {
+
+ if (sc->length == 0) {
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "premature end of spdy header block");
+
+ return ngx_http_spdy_state_headers_error(sc, pos, end);
+ }
+
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers);
+ }
+
+ sc->entries = ngx_spdy_frame_parse_uint32(buf->pos);
+
+ buf->pos += NGX_SPDY_NV_NUM_SIZE;
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy header block has %ui entries",
+ sc->entries);
+
+ if (ngx_list_init(&r->headers_in.headers, r->pool, 20,
+ sizeof(ngx_table_elt_t))
+ != NGX_OK)
+ {
+ ngx_http_spdy_close_stream(sc->stream,
+ NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+ }
+
+ if (ngx_array_init(&r->headers_in.cookies, r->pool, 2,
+ sizeof(ngx_table_elt_t *))
+ != NGX_OK)
+ {
+ ngx_http_spdy_close_stream(sc->stream,
+ NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+ }
+ }
+
+ while (sc->entries) {
+
+ rc = ngx_http_spdy_parse_header(r);
+
+ switch (rc) {
+
+ case NGX_DONE:
+ sc->entries--;
+
+ case NGX_OK:
+ break;
+
+ case NGX_AGAIN:
+
+ if (sc->zstream_in.avail_in) {
+
+ rc = ngx_http_spdy_alloc_large_header_buffer(r);
+
+ if (rc == NGX_DECLINED) {
+ ngx_http_finalize_request(r,
+ NGX_HTTP_REQUEST_HEADER_TOO_LARGE);
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+ }
+
+ if (rc != NGX_OK) {
+ ngx_http_spdy_close_stream(sc->stream,
+ NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+ }
+
+ /* null-terminate the last processed header name or value */
+ *buf->pos = '\0';
+
+ buf = r->header_in;
+
+ sc->zstream_in.next_out = buf->last;
+
+ /* one byte is reserved for null-termination */
+ sc->zstream_in.avail_out = buf->end - buf->last - 1;
+
+ z = inflate(&sc->zstream_in, Z_NO_FLUSH);
+
+ ngx_log_debug5(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy inflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
+ sc->zstream_in.next_in, sc->zstream_in.next_out,
+ sc->zstream_in.avail_in, sc->zstream_in.avail_out,
+ z);
+
+ if (z != Z_OK) {
+ return ngx_http_spdy_state_inflate_error(sc, z);
+ }
+
+ sc->length -= sc->zstream_in.next_in - pos;
+ pos = sc->zstream_in.next_in;
+
+ buf->last = sc->zstream_in.next_out;
+
+ continue;
+ }
+
+ if (sc->length == 0) {
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "premature end of spdy header block");
+
+ return ngx_http_spdy_state_headers_error(sc, pos, end);
+ }
+
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers);
+
+ case NGX_HTTP_PARSE_INVALID_HEADER:
+ ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+
+ default: /* NGX_ERROR */
+ return ngx_http_spdy_state_headers_error(sc, pos, end);
+ }
+
+ /* a header line has been parsed successfully */
+
+ rc = ngx_http_spdy_handle_request_header(r);
+
+ if (rc != NGX_OK) {
+ if (rc == NGX_HTTP_PARSE_INVALID_HEADER) {
+ ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+ }
+
+ if (rc != NGX_ABORT) {
+ ngx_http_spdy_close_stream(sc->stream,
+ NGX_HTTP_INTERNAL_SERVER_ERROR);
+ }
+
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+ }
+ }
+
+ if (buf->pos != buf->last || sc->zstream_in.avail_in) {
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "incorrect number of spdy header block entries");
+
+ return ngx_http_spdy_state_headers_error(sc, pos, end);
+ }
+
+ if (sc->length) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers);
+ }
+
+ /* null-terminate the last header value */
+ *buf->pos = '\0';
+
+ ngx_http_spdy_run_request(r);
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_headers_skip(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ int n;
+ size_t size;
+ u_char buffer[NGX_SPDY_SKIP_HEADERS_BUFFER_SIZE];
+
+ if (sc->length == 0) {
+ return ngx_http_spdy_state_complete(sc, pos, end);
+ }
+
+ size = end - pos;
+
+ if (size == 0) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers_skip);
+ }
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy header block skip %uz of %uz", size, sc->length);
+
+ sc->zstream_in.next_in = pos;
+ sc->zstream_in.avail_in = (size < sc->length) ? size : sc->length;
+
+ while (sc->zstream_in.avail_in) {
+ sc->zstream_in.next_out = buffer;
+ sc->zstream_in.avail_out = NGX_SPDY_SKIP_HEADERS_BUFFER_SIZE;
+
+ n = inflate(&sc->zstream_in, Z_NO_FLUSH);
+
+ ngx_log_debug5(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy inflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
+ sc->zstream_in.next_in, sc->zstream_in.next_out,
+ sc->zstream_in.avail_in, sc->zstream_in.avail_out,
+ n);
+
+ if (n != Z_OK) {
+ return ngx_http_spdy_state_inflate_error(sc, n);
+ }
+ }
+
+ pos = sc->zstream_in.next_in;
+
+ if (size < sc->length) {
+ sc->length -= size;
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_headers_skip);
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_headers_error(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ ngx_http_spdy_stream_t *stream;
+
+ stream = sc->stream;
+
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent SYN_STREAM frame for stream %ui "
+ "with invalid header block", stream->id);
+
+ if (ngx_http_spdy_send_rst_stream(sc, stream->id, NGX_SPDY_PROTOCOL_ERROR,
+ stream->priority)
+ != NGX_OK)
+ {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ stream->out_closed = 1;
+
+ ngx_http_spdy_close_stream(stream, NGX_HTTP_BAD_REQUEST);
+
+ return ngx_http_spdy_state_headers_skip(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_window_update(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ size_t delta;
+ ngx_uint_t sid;
+ ngx_event_t *wev;
+ ngx_queue_t *q;
+ ngx_http_spdy_stream_t *stream;
+
+ if (end - pos < NGX_SPDY_WINDOW_UPDATE_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_window_update);
+ }
+
+ if (sc->length != NGX_SPDY_WINDOW_UPDATE_SIZE) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent WINDOW_UPDATE frame "
+ "with incorrect length %uz", sc->length);
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ sid = ngx_spdy_frame_parse_sid(pos);
+
+ pos += NGX_SPDY_SID_SIZE;
+
+ delta = ngx_spdy_frame_parse_delta(pos);
+
+ pos += NGX_SPDY_DELTA_SIZE;
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy WINDOW_UPDATE sid:%ui delta:%uz", sid, delta);
+
+ if (sid) {
+ stream = ngx_http_spdy_get_stream_by_id(sc, sid);
+
+ if (stream == NULL) {
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "unknown spdy stream");
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+ }
+
+ if (stream->send_window > (ssize_t) (NGX_SPDY_MAX_WINDOW - delta)) {
+
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client violated flow control for stream %ui: "
+ "received WINDOW_UPDATE frame with delta %uz "
+ "not allowed for window %z",
+ sid, delta, stream->send_window);
+
+ if (ngx_http_spdy_terminate_stream(sc, stream,
+ NGX_SPDY_FLOW_CONTROL_ERROR)
+ == NGX_ERROR)
+ {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+ }
+
+ stream->send_window += delta;
+
+ if (stream->exhausted) {
+ stream->exhausted = 0;
+
+ wev = stream->request->connection->write;
+
+ if (!wev->timer_set) {
+ wev->delayed = 0;
+ wev->handler(wev);
+ }
+ }
+
+ } else {
+ sc->send_window += delta;
+
+ if (sc->send_window > NGX_SPDY_MAX_WINDOW) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client violated connection flow control: "
+ "received WINDOW_UPDATE frame with delta %uz "
+ "not allowed for window %uz",
+ delta, sc->send_window);
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ while (!ngx_queue_empty(&sc->waiting)) {
+ q = ngx_queue_head(&sc->waiting);
+
+ ngx_queue_remove(q);
+
+ stream = ngx_queue_data(q, ngx_http_spdy_stream_t, queue);
+
+ stream->handled = 0;
+
+ wev = stream->request->connection->write;
+
+ if (!wev->timer_set) {
+ wev->delayed = 0;
+ wev->handler(wev);
+
+ if (sc->send_window == 0) {
+ break;
+ }
+ }
+ }
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_data(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ ngx_http_spdy_stream_t *stream;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy DATA frame");
+
+ if (sc->length > sc->recv_window) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client violated connection flow control: "
+ "received DATA frame length %uz, available window %uz",
+ sc->length, sc->recv_window);
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ sc->recv_window -= sc->length;
+
+ if (sc->recv_window < NGX_SPDY_MAX_WINDOW / 4) {
+
+ if (ngx_http_spdy_send_window_update(sc, 0,
+ NGX_SPDY_MAX_WINDOW
+ - sc->recv_window)
+ == NGX_ERROR)
+ {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ sc->recv_window = NGX_SPDY_MAX_WINDOW;
+ }
+
+ stream = sc->stream;
+
+ if (stream == NULL) {
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "unknown spdy stream");
+
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+
+ if (sc->length > stream->recv_window) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client violated flow control for stream %ui: "
+ "received DATA frame length %uz, available window %uz",
+ stream->id, sc->length, stream->recv_window);
+
+ if (ngx_http_spdy_terminate_stream(sc, stream,
+ NGX_SPDY_FLOW_CONTROL_ERROR)
+ == NGX_ERROR)
+ {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+
+ stream->recv_window -= sc->length;
+
+ if (stream->recv_window < NGX_SPDY_STREAM_WINDOW / 4) {
+
+ if (ngx_http_spdy_send_window_update(sc, stream->id,
+ NGX_SPDY_STREAM_WINDOW
+ - stream->recv_window)
+ == NGX_ERROR)
+ {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ stream->recv_window = NGX_SPDY_STREAM_WINDOW;
+ }
+
+ if (stream->in_closed) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent DATA frame for half-closed stream %ui",
+ stream->id);
+
+ if (ngx_http_spdy_terminate_stream(sc, stream,
+ NGX_SPDY_STREAM_ALREADY_CLOSED)
+ == NGX_ERROR)
+ {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+
+ return ngx_http_spdy_state_read_data(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_read_data(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ size_t size;
+ ssize_t n;
+ ngx_buf_t *buf;
+ ngx_int_t rc;
+ ngx_temp_file_t *tf;
+ ngx_http_request_t *r;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_request_body_t *rb;
+ ngx_http_core_loc_conf_t *clcf;
+
+ stream = sc->stream;
+
+ if (stream == NULL) {
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+
+ if (stream->skip_data) {
+
+ if (sc->flags & NGX_SPDY_FLAG_FIN) {
+ stream->in_closed = 1;
+ }
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "skipping spdy DATA frame, reason: %d",
+ stream->skip_data);
+
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+
+ size = end - pos;
+
+ if (size > sc->length) {
+ size = sc->length;
+ }
+
+ r = stream->request;
+
+ if (r->request_body == NULL
+ && ngx_http_spdy_init_request_body(r) != NGX_OK)
+ {
+ stream->skip_data = NGX_SPDY_DATA_INTERNAL_ERROR;
+ return ngx_http_spdy_state_skip(sc, pos, end);
+ }
+
+ rb = r->request_body;
+ tf = rb->temp_file;
+ buf = rb->buf;
+
+ if (size) {
+ rb->rest += size;
+
+ if (r->headers_in.content_length_n != -1
+ && r->headers_in.content_length_n < rb->rest)
+ {
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "client intended to send body data "
+ "larger than declared");
+
+ stream->skip_data = NGX_SPDY_DATA_ERROR;
+ goto error;
+
+ } else {
+ clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
+
+ if (clcf->client_max_body_size
+ && clcf->client_max_body_size < rb->rest)
+ {
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+ "client intended to send "
+ "too large chunked body: %O bytes", rb->rest);
+
+ stream->skip_data = NGX_SPDY_DATA_ERROR;
+ goto error;
+ }
+ }
+
+ sc->length -= size;
+
+ if (tf) {
+ buf->start = pos;
+ buf->pos = pos;
+
+ pos += size;
+
+ buf->end = pos;
+ buf->last = pos;
+
+ n = ngx_write_chain_to_temp_file(tf, rb->bufs);
+
+ /* TODO: n == 0 or not complete and level event */
+
+ if (n == NGX_ERROR) {
+ stream->skip_data = NGX_SPDY_DATA_INTERNAL_ERROR;
+ goto error;
+ }
+
+ tf->offset += n;
+
+ } else {
+ buf->last = ngx_cpymem(buf->last, pos, size);
+ pos += size;
+ }
+
+ r->request_length += size;
+ }
+
+ if (sc->length) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_read_data);
+ }
+
+ if (sc->flags & NGX_SPDY_FLAG_FIN) {
+
+ stream->in_closed = 1;
+
+ if (r->headers_in.content_length_n < 0) {
+ r->headers_in.content_length_n = rb->rest;
+
+ } else if (r->headers_in.content_length_n != rb->rest) {
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "client prematurely closed stream: "
+ "only %O out of %O bytes of request body received",
+ rb->rest, r->headers_in.content_length_n);
+
+ stream->skip_data = NGX_SPDY_DATA_ERROR;
+ goto error;
+ }
+
+ if (tf) {
+ ngx_memzero(buf, sizeof(ngx_buf_t));
+
+ buf->in_file = 1;
+ buf->file_last = tf->file.offset;
+ buf->file = &tf->file;
+
+ rb->buf = NULL;
+ }
+
+ if (rb->post_handler) {
+ r->read_event_handler = ngx_http_block_reading;
+ rb->post_handler(r);
+ }
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+
+error:
+
+ if (rb->post_handler) {
+
+ if (stream->skip_data == NGX_SPDY_DATA_ERROR) {
+ rc = (r->headers_in.content_length_n == -1)
+ ? NGX_HTTP_REQUEST_ENTITY_TOO_LARGE
+ : NGX_HTTP_BAD_REQUEST;
+
+ } else {
+ rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ ngx_http_finalize_request(r, rc);
+ }
+
+ return ngx_http_spdy_state_skip(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_rst_stream(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ ngx_uint_t sid, status;
+ ngx_event_t *ev;
+ ngx_connection_t *fc;
+ ngx_http_spdy_stream_t *stream;
+
+ if (end - pos < NGX_SPDY_RST_STREAM_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_rst_stream);
+ }
+
+ if (sc->length != NGX_SPDY_RST_STREAM_SIZE) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent RST_STREAM frame with incorrect length %uz",
+ sc->length);
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ sid = ngx_spdy_frame_parse_sid(pos);
+
+ pos += NGX_SPDY_SID_SIZE;
+
+ status = ngx_spdy_frame_parse_uint32(pos);
+
+ pos += sizeof(uint32_t);
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy RST_STREAM sid:%ui st:%ui", sid, status);
+
+ stream = ngx_http_spdy_get_stream_by_id(sc, sid);
+
+ if (stream == NULL) {
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "unknown spdy stream");
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+ }
+
+ stream->in_closed = 1;
+ stream->out_closed = 1;
+
+ fc = stream->request->connection;
+ fc->error = 1;
+
+ switch (status) {
+
+ case NGX_SPDY_CANCEL:
+ ngx_log_error(NGX_LOG_INFO, fc->log, 0,
+ "client canceled stream %ui", sid);
+ break;
+
+ case NGX_SPDY_INTERNAL_ERROR:
+ ngx_log_error(NGX_LOG_INFO, fc->log, 0,
+ "client terminated stream %ui due to internal error",
+ sid);
+ break;
+
+ default:
+ ngx_log_error(NGX_LOG_INFO, fc->log, 0,
+ "client terminated stream %ui with status %ui",
+ sid, status);
+ break;
+ }
+
+ ev = fc->read;
+ ev->handler(ev);
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_ping(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ u_char *p;
+ ngx_buf_t *buf;
+ ngx_http_spdy_out_frame_t *frame;
+
+ if (end - pos < NGX_SPDY_PING_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_ping);
+ }
+
+ if (sc->length != NGX_SPDY_PING_SIZE) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent PING frame with incorrect length %uz",
+ sc->length);
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy PING frame");
+
+ frame = ngx_http_spdy_get_ctl_frame(sc, NGX_SPDY_PING_SIZE,
+ NGX_SPDY_HIGHEST_PRIORITY);
+ if (frame == NULL) {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ buf = frame->first->buf;
+
+ p = buf->pos;
+
+ p = ngx_spdy_frame_write_head(p, NGX_SPDY_PING);
+ p = ngx_spdy_frame_write_flags_and_len(p, 0, NGX_SPDY_PING_SIZE);
+
+ p = ngx_cpymem(p, pos, NGX_SPDY_PING_SIZE);
+
+ buf->last = p;
+
+ ngx_http_spdy_queue_frame(sc, frame);
+
+ pos += NGX_SPDY_PING_SIZE;
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_skip(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ size_t size;
+
+ size = end - pos;
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy frame skip %uz of %uz", size, sc->length);
+
+ if (size < sc->length) {
+ sc->length -= size;
+ return ngx_http_spdy_state_save(sc, end, end,
+ ngx_http_spdy_state_skip);
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos + sc->length, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_settings(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ ngx_uint_t fid, val;
+
+ if (sc->entries == 0) {
+
+ if (end - pos < NGX_SPDY_SETTINGS_NUM_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_settings);
+ }
+
+ sc->entries = ngx_spdy_frame_parse_uint32(pos);
+
+ pos += NGX_SPDY_SETTINGS_NUM_SIZE;
+ sc->length -= NGX_SPDY_SETTINGS_NUM_SIZE;
+
+ if (sc->length < sc->entries * NGX_SPDY_SETTINGS_PAIR_SIZE) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent SETTINGS frame with incorrect "
+ "length %uz or number of entries %ui",
+ sc->length, sc->entries);
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy SETTINGS frame has %ui entries", sc->entries);
+ }
+
+ while (sc->entries) {
+ if (end - pos < NGX_SPDY_SETTINGS_PAIR_SIZE) {
+ return ngx_http_spdy_state_save(sc, pos, end,
+ ngx_http_spdy_state_settings);
+ }
+
+ sc->entries--;
+ sc->length -= NGX_SPDY_SETTINGS_PAIR_SIZE;
+
+ fid = ngx_spdy_frame_parse_uint32(pos);
+
+ pos += NGX_SPDY_SETTINGS_FID_SIZE;
+
+ val = ngx_spdy_frame_parse_uint32(pos);
+
+ pos += NGX_SPDY_SETTINGS_VAL_SIZE;
+
+ ngx_log_debug3(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy SETTINGS entry fl:%ui id:%ui val:%ui",
+ ngx_spdy_frame_flags(fid), ngx_spdy_frame_id(fid), val);
+
+ if (ngx_spdy_frame_flags(fid) == NGX_SPDY_SETTINGS_FLAG_PERSISTED) {
+ continue;
+ }
+
+ switch (ngx_spdy_frame_id(fid)) {
+
+ case NGX_SPDY_SETTINGS_INIT_WINDOW:
+
+ if (val > NGX_SPDY_MAX_WINDOW) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent SETTINGS frame with "
+ "incorrect INIT_WINDOW value: %ui", val);
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ if (ngx_http_spdy_adjust_windows(sc, val - sc->init_window)
+ != NGX_OK)
+ {
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ sc->init_window = val;
+
+ continue;
+ }
+ }
+
+ return ngx_http_spdy_state_complete(sc, pos, end);
+}
+
+
+static u_char *
+ngx_http_spdy_state_complete(ngx_http_spdy_connection_t *sc, u_char *pos,
+ u_char *end)
+{
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy frame complete pos:%p end:%p", pos, end);
+
+ if (pos > end) {
+ ngx_log_error(NGX_LOG_ALERT, sc->connection->log, 0,
+ "receive buffer overrun");
+
+ ngx_debug_point();
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ sc->handler = ngx_http_spdy_state_head;
+ sc->stream = NULL;
+
+ return pos;
+}
+
+
+static u_char *
+ngx_http_spdy_state_save(ngx_http_spdy_connection_t *sc,
+ u_char *pos, u_char *end, ngx_http_spdy_handler_pt handler)
+{
+ size_t size;
+
+ ngx_log_debug3(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy frame state save pos:%p end:%p handler:%p",
+ pos, end, handler);
+
+ size = end - pos;
+
+ if (size > NGX_SPDY_STATE_BUFFER_SIZE) {
+ ngx_log_error(NGX_LOG_ALERT, sc->connection->log, 0,
+ "state buffer overflow: %uz bytes required", size);
+
+ ngx_debug_point();
+ return ngx_http_spdy_state_internal_error(sc);
+ }
+
+ ngx_memcpy(sc->buffer, pos, NGX_SPDY_STATE_BUFFER_SIZE);
+
+ sc->buffer_used = size;
+ sc->handler = handler;
+ sc->incomplete = 1;
+
+ return end;
+}
+
+
+static u_char *
+ngx_http_spdy_state_inflate_error(ngx_http_spdy_connection_t *sc, int rc)
+{
+ if (rc == Z_DATA_ERROR || rc == Z_STREAM_END) {
+ ngx_log_error(NGX_LOG_INFO, sc->connection->log, 0,
+ "client sent SYN_STREAM frame with "
+ "corrupted header block, inflate() failed: %d", rc);
+
+ return ngx_http_spdy_state_protocol_error(sc);
+ }
+
+ ngx_log_error(NGX_LOG_ERR, sc->connection->log, 0,
+ "inflate() failed: %d", rc);
+
+ return ngx_http_spdy_state_internal_error(sc);
+}
+
+
+static u_char *
+ngx_http_spdy_state_protocol_error(ngx_http_spdy_connection_t *sc)
+{
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy state protocol error");
+
+ if (sc->stream) {
+ sc->stream->out_closed = 1;
+ ngx_http_spdy_close_stream(sc->stream, NGX_HTTP_BAD_REQUEST);
+ }
+
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_CLIENT_CLOSED_REQUEST);
+
+ return NULL;
+}
+
+
+static u_char *
+ngx_http_spdy_state_internal_error(ngx_http_spdy_connection_t *sc)
+{
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy state internal error");
+
+ if (sc->stream) {
+ sc->stream->out_closed = 1;
+ ngx_http_spdy_close_stream(sc->stream, NGX_HTTP_INTERNAL_SERVER_ERROR);
+ }
+
+ ngx_http_spdy_finalize_connection(sc, NGX_HTTP_INTERNAL_SERVER_ERROR);
+
+ return NULL;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_send_window_update(ngx_http_spdy_connection_t *sc, ngx_uint_t sid,
+ ngx_uint_t delta)
+{
+ u_char *p;
+ ngx_buf_t *buf;
+ ngx_http_spdy_out_frame_t *frame;
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy send WINDOW_UPDATE sid:%ui delta:%ui", sid, delta);
+
+ frame = ngx_http_spdy_get_ctl_frame(sc, NGX_SPDY_WINDOW_UPDATE_SIZE,
+ NGX_SPDY_HIGHEST_PRIORITY);
+ if (frame == NULL) {
+ return NGX_ERROR;
+ }
+
+ buf = frame->first->buf;
+
+ p = buf->pos;
+
+ p = ngx_spdy_frame_write_head(p, NGX_SPDY_WINDOW_UPDATE);
+ p = ngx_spdy_frame_write_flags_and_len(p, 0, NGX_SPDY_WINDOW_UPDATE_SIZE);
+
+ p = ngx_spdy_frame_write_sid(p, sid);
+ p = ngx_spdy_frame_aligned_write_uint32(p, delta);
+
+ buf->last = p;
+
+ ngx_http_spdy_queue_frame(sc, frame);
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_send_rst_stream(ngx_http_spdy_connection_t *sc, ngx_uint_t sid,
+ ngx_uint_t status, ngx_uint_t priority)
+{
+ u_char *p;
+ ngx_buf_t *buf;
+ ngx_http_spdy_out_frame_t *frame;
+
+ if (sc->connection->error) {
+ return NGX_OK;
+ }
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy send RST_STREAM sid:%ui st:%ui", sid, status);
+
+ frame = ngx_http_spdy_get_ctl_frame(sc, NGX_SPDY_RST_STREAM_SIZE,
+ priority);
+ if (frame == NULL) {
+ return NGX_ERROR;
+ }
+
+ buf = frame->first->buf;
+
+ p = buf->pos;
+
+ p = ngx_spdy_frame_write_head(p, NGX_SPDY_RST_STREAM);
+ p = ngx_spdy_frame_write_flags_and_len(p, 0, NGX_SPDY_RST_STREAM_SIZE);
+
+ p = ngx_spdy_frame_write_sid(p, sid);
+ p = ngx_spdy_frame_aligned_write_uint32(p, status);
+
+ buf->last = p;
+
+ ngx_http_spdy_queue_frame(sc, frame);
+
+ return NGX_OK;
+}
+
+
+#if 0
+static ngx_int_t
+ngx_http_spdy_send_goaway(ngx_http_spdy_connection_t *sc)
+{
+ u_char *p;
+ ngx_buf_t *buf;
+ ngx_http_spdy_out_frame_t *frame;
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy send GOAWAY sid:%ui", sc->last_sid);
+
+ frame = ngx_http_spdy_get_ctl_frame(sc, NGX_SPDY_GOAWAY_SIZE,
+ NGX_SPDY_HIGHEST_PRIORITY);
+ if (frame == NULL) {
+ return NGX_ERROR;
+ }
+
+ buf = frame->first->buf;
+
+ p = buf->pos;
+
+ p = ngx_spdy_frame_write_head(p, NGX_SPDY_GOAWAY);
+ p = ngx_spdy_frame_write_flags_and_len(p, 0, NGX_SPDY_GOAWAY_SIZE);
+
+ p = ngx_spdy_frame_write_sid(p, sc->last_sid);
+
+ buf->last = p;
+
+ ngx_http_spdy_queue_frame(sc, frame);
+
+ return NGX_OK;
+}
+#endif
+
+
+static ngx_int_t
+ngx_http_spdy_send_settings(ngx_http_spdy_connection_t *sc)
+{
+ u_char *p;
+ ngx_buf_t *buf;
+ ngx_chain_t *cl;
+ ngx_http_spdy_srv_conf_t *sscf;
+ ngx_http_spdy_out_frame_t *frame;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, sc->connection->log, 0,
+ "spdy send SETTINGS frame");
+
+ frame = ngx_palloc(sc->pool, sizeof(ngx_http_spdy_out_frame_t));
+ if (frame == NULL) {
+ return NGX_ERROR;
+ }
+
+ cl = ngx_alloc_chain_link(sc->pool);
+ if (cl == NULL) {
+ return NGX_ERROR;
+ }
+
+ buf = ngx_create_temp_buf(sc->pool, NGX_SPDY_FRAME_HEADER_SIZE
+ + NGX_SPDY_SETTINGS_NUM_SIZE
+ + 2 * NGX_SPDY_SETTINGS_PAIR_SIZE);
+ if (buf == NULL) {
+ return NGX_ERROR;
+ }
+
+ buf->last_buf = 1;
+
+ cl->buf = buf;
+ cl->next = NULL;
+
+ frame->first = cl;
+ frame->last = cl;
+ frame->handler = ngx_http_spdy_settings_frame_handler;
+ frame->stream = NULL;
+#if (NGX_DEBUG)
+ frame->length = NGX_SPDY_SETTINGS_NUM_SIZE
+ + 2 * NGX_SPDY_SETTINGS_PAIR_SIZE;
+#endif
+ frame->priority = NGX_SPDY_HIGHEST_PRIORITY;
+ frame->blocked = 0;
+
+ p = buf->pos;
+
+ p = ngx_spdy_frame_write_head(p, NGX_SPDY_SETTINGS);
+ p = ngx_spdy_frame_write_flags_and_len(p, NGX_SPDY_FLAG_CLEAR_SETTINGS,
+ NGX_SPDY_SETTINGS_NUM_SIZE
+ + 2 * NGX_SPDY_SETTINGS_PAIR_SIZE);
+
+ p = ngx_spdy_frame_aligned_write_uint32(p, 2);
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ p = ngx_spdy_frame_write_flags_and_id(p, 0, NGX_SPDY_SETTINGS_MAX_STREAMS);
+ p = ngx_spdy_frame_aligned_write_uint32(p, sscf->concurrent_streams);
+
+ p = ngx_spdy_frame_write_flags_and_id(p, 0, NGX_SPDY_SETTINGS_INIT_WINDOW);
+ p = ngx_spdy_frame_aligned_write_uint32(p, NGX_SPDY_STREAM_WINDOW);
+
+ buf->last = p;
+
+ ngx_http_spdy_queue_frame(sc, frame);
+
+ return NGX_OK;
+}
+
+
+ngx_int_t
+ngx_http_spdy_settings_frame_handler(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_out_frame_t *frame)
+{
+ ngx_buf_t *buf;
+
+ buf = frame->first->buf;
+
+ if (buf->pos != buf->last) {
+ return NGX_AGAIN;
+ }
+
+ ngx_free_chain(sc->pool, frame->first);
+
+ return NGX_OK;
+}
+
+
+static ngx_http_spdy_out_frame_t *
+ngx_http_spdy_get_ctl_frame(ngx_http_spdy_connection_t *sc, size_t length,
+ ngx_uint_t priority)
+{
+ ngx_chain_t *cl;
+ ngx_http_spdy_out_frame_t *frame;
+
+ frame = sc->free_ctl_frames;
+
+ if (frame) {
+ sc->free_ctl_frames = frame->next;
+
+ cl = frame->first;
+ cl->buf->pos = cl->buf->start;
+
+ } else {
+ frame = ngx_palloc(sc->pool, sizeof(ngx_http_spdy_out_frame_t));
+ if (frame == NULL) {
+ return NULL;
+ }
+
+ cl = ngx_alloc_chain_link(sc->pool);
+ if (cl == NULL) {
+ return NULL;
+ }
+
+ cl->buf = ngx_create_temp_buf(sc->pool,
+ NGX_SPDY_CTL_FRAME_BUFFER_SIZE);
+ if (cl->buf == NULL) {
+ return NULL;
+ }
+
+ cl->buf->last_buf = 1;
+
+ frame->first = cl;
+ frame->last = cl;
+ frame->handler = ngx_http_spdy_ctl_frame_handler;
+ frame->stream = NULL;
+ }
+
+#if (NGX_DEBUG)
+ if (length > NGX_SPDY_CTL_FRAME_BUFFER_SIZE - NGX_SPDY_FRAME_HEADER_SIZE) {
+ ngx_log_error(NGX_LOG_ALERT, sc->pool->log, 0,
+ "requested control frame is too large: %uz", length);
+ return NULL;
+ }
+
+ frame->length = length;
+#endif
+
+ frame->priority = priority;
+ frame->blocked = 0;
+
+ return frame;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_ctl_frame_handler(ngx_http_spdy_connection_t *sc,
+ ngx_http_spdy_out_frame_t *frame)
+{
+ ngx_buf_t *buf;
+
+ buf = frame->first->buf;
+
+ if (buf->pos != buf->last) {
+ return NGX_AGAIN;
+ }
+
+ frame->next = sc->free_ctl_frames;
+ sc->free_ctl_frames = frame;
+
+ return NGX_OK;
+}
+
+
+static ngx_http_spdy_stream_t *
+ngx_http_spdy_create_stream(ngx_http_spdy_connection_t *sc, ngx_uint_t id,
+ ngx_uint_t priority)
+{
+ ngx_log_t *log;
+ ngx_uint_t index;
+ ngx_event_t *rev, *wev;
+ ngx_connection_t *fc;
+ ngx_http_log_ctx_t *ctx;
+ ngx_http_request_t *r;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_core_srv_conf_t *cscf;
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ fc = sc->free_fake_connections;
+
+ if (fc) {
+ sc->free_fake_connections = fc->data;
+
+ rev = fc->read;
+ wev = fc->write;
+ log = fc->log;
+ ctx = log->data;
+
+ } else {
+ fc = ngx_palloc(sc->pool, sizeof(ngx_connection_t));
+ if (fc == NULL) {
+ return NULL;
+ }
+
+ rev = ngx_palloc(sc->pool, sizeof(ngx_event_t));
+ if (rev == NULL) {
+ return NULL;
+ }
+
+ wev = ngx_palloc(sc->pool, sizeof(ngx_event_t));
+ if (wev == NULL) {
+ return NULL;
+ }
+
+ log = ngx_palloc(sc->pool, sizeof(ngx_log_t));
+ if (log == NULL) {
+ return NULL;
+ }
+
+ ctx = ngx_palloc(sc->pool, sizeof(ngx_http_log_ctx_t));
+ if (ctx == NULL) {
+ return NULL;
+ }
+
+ ctx->connection = fc;
+ ctx->request = NULL;
+ }
+
+ ngx_memcpy(log, sc->connection->log, sizeof(ngx_log_t));
+
+ log->data = ctx;
+
+ ngx_memzero(rev, sizeof(ngx_event_t));
+
+ rev->data = fc;
+ rev->ready = 1;
+ rev->handler = ngx_http_spdy_close_stream_handler;
+ rev->log = log;
+
+ ngx_memcpy(wev, rev, sizeof(ngx_event_t));
+
+ wev->write = 1;
+
+ ngx_memcpy(fc, sc->connection, sizeof(ngx_connection_t));
+
+ fc->data = sc->http_connection;
+ fc->read = rev;
+ fc->write = wev;
+ fc->sent = 0;
+ fc->log = log;
+ fc->buffered = 0;
+ fc->sndlowat = 1;
+ fc->tcp_nodelay = NGX_TCP_NODELAY_DISABLED;
+
+ r = ngx_http_create_request(fc);
+ if (r == NULL) {
+ return NULL;
+ }
+
+ r->valid_location = 1;
+
+ fc->data = r;
+ sc->connection->requests++;
+
+ cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+ r->header_in = ngx_create_temp_buf(r->pool,
+ cscf->client_header_buffer_size);
+ if (r->header_in == NULL) {
+ ngx_http_free_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return NULL;
+ }
+
+ r->headers_in.connection_type = NGX_HTTP_CONNECTION_CLOSE;
+
+ stream = ngx_pcalloc(r->pool, sizeof(ngx_http_spdy_stream_t));
+ if (stream == NULL) {
+ ngx_http_free_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return NULL;
+ }
+
+ r->spdy_stream = stream;
+
+ stream->id = id;
+ stream->request = r;
+ stream->connection = sc;
+
+ stream->send_window = sc->init_window;
+ stream->recv_window = NGX_SPDY_STREAM_WINDOW;
+
+ stream->priority = priority;
+
+ sscf = ngx_http_get_module_srv_conf(r, ngx_http_spdy_module);
+
+ index = ngx_http_spdy_stream_index(sscf, id);
+
+ stream->index = sc->streams_index[index];
+ sc->streams_index[index] = stream;
+
+ sc->processing++;
+
+ return stream;
+}
+
+
+static ngx_http_spdy_stream_t *
+ngx_http_spdy_get_stream_by_id(ngx_http_spdy_connection_t *sc,
+ ngx_uint_t sid)
+{
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_spdy_srv_conf_t *sscf;
+
+ sscf = ngx_http_get_module_srv_conf(sc->http_connection->conf_ctx,
+ ngx_http_spdy_module);
+
+ stream = sc->streams_index[ngx_http_spdy_stream_index(sscf, sid)];
+
+ while (stream) {
+ if (stream->id == sid) {
+ return stream;
+ }
+
+ stream = stream->index;
+ }
+
+ return NULL;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_parse_header(ngx_http_request_t *r)
+{
+ u_char *p, *end, ch;
+ ngx_uint_t hash;
+ ngx_http_core_srv_conf_t *cscf;
+
+ enum {
+ sw_name_len = 0,
+ sw_name,
+ sw_value_len,
+ sw_value
+ } state;
+
+ state = r->state;
+
+ p = r->header_in->pos;
+ end = r->header_in->last;
+
+ switch (state) {
+
+ case sw_name_len:
+
+ if (end - p < NGX_SPDY_NV_NLEN_SIZE) {
+ return NGX_AGAIN;
+ }
+
+ r->lowcase_index = ngx_spdy_frame_parse_uint32(p);
+
+ if (r->lowcase_index == 0) {
+ return NGX_ERROR;
+ }
+
+ /* null-terminate the previous header value */
+ *p = '\0';
+
+ p += NGX_SPDY_NV_NLEN_SIZE;
+
+ r->invalid_header = 0;
+
+ state = sw_name;
+
+ /* fall through */
+
+ case sw_name:
+
+ if ((ngx_uint_t) (end - p) < r->lowcase_index) {
+ break;
+ }
+
+ cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+ r->header_name_start = p;
+ r->header_name_end = p + r->lowcase_index;
+
+ if (p[0] == ':') {
+ p++;
+ }
+
+ hash = 0;
+
+ for ( /* void */ ; p != r->header_name_end; p++) {
+
+ ch = *p;
+
+ hash = ngx_hash(hash, ch);
+
+ if ((ch >= 'a' && ch <= 'z')
+ || (ch == '-')
+ || (ch >= '0' && ch <= '9')
+ || (ch == '_' && cscf->underscores_in_headers))
+ {
+ continue;
+ }
+
+ switch (ch) {
+ case '\0':
+ case LF:
+ case CR:
+ case ':':
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "client sent invalid header name: \"%*s\"",
+ r->lowcase_index, r->header_name_start);
+
+ return NGX_HTTP_PARSE_INVALID_HEADER;
+ }
+
+ if (ch >= 'A' && ch <= 'Z') {
+ return NGX_ERROR;
+ }
+
+ r->invalid_header = 1;
+ }
+
+ r->header_hash = hash;
+
+ state = sw_value_len;
+
+ /* fall through */
+
+ case sw_value_len:
+
+ if (end - p < NGX_SPDY_NV_VLEN_SIZE) {
+ break;
+ }
+
+ r->lowcase_index = ngx_spdy_frame_parse_uint32(p);
+
+ /* null-terminate header name */
+ *p = '\0';
+
+ p += NGX_SPDY_NV_VLEN_SIZE;
+
+ state = sw_value;
+
+ /* fall through */
+
+ case sw_value:
+
+ if ((ngx_uint_t) (end - p) < r->lowcase_index) {
+ break;
+ }
+
+ r->header_start = p;
+
+ while (r->lowcase_index--) {
+ ch = *p;
+
+ if (ch == '\0') {
+
+ if (p == r->header_start) {
+ return NGX_ERROR;
+ }
+
+ r->header_end = p;
+ r->header_in->pos = p + 1;
+
+ r->state = sw_value;
+
+ return NGX_OK;
+ }
+
+ if (ch == CR || ch == LF) {
+ ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
+ "client sent header \"%*s\" with "
+ "invalid value: \"%*s\\%c...\"",
+ r->header_name_end - r->header_name_start,
+ r->header_name_start,
+ p - r->header_start,
+ r->header_start,
+ ch == CR ? 'r' : 'n');
+
+ return NGX_HTTP_PARSE_INVALID_HEADER;
+ }
+
+ p++;
+ }
+
+ r->header_end = p;
+ r->header_in->pos = p;
+
+ r->state = 0;
+
+ return NGX_DONE;
+ }
+
+ r->header_in->pos = p;
+ r->state = state;
+
+ return NGX_AGAIN;
+}
+
+
+static ngx_int_t
+ngx_http_spdy_alloc_large_header_buffer(ngx_http_request_t *r)
+{
+ u_char *old, *new, *p;
+ size_t rest;
+ ngx_buf_t *buf;
+ ngx_http_spdy_stream_t *stream;
+ ngx_http_core_srv_conf_t *cscf;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "spdy alloc large header buffer");
+
+ stream = r->spdy_stream;
+
+ cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
+
+ if (stream->header_buffers
+ == (ngx_uint_t) cscf->large_client_header_buffers.num)
+ {