switch to buffered writes from stdio

sockwrite-use-stdio.patch

diff --git a/server.c b/server.c
index 6530e69..57f59a1 100644
--- a/server.c
+++ b/server.c
@@ -111,20 +111,19 @@ typedef struct _z_strm {
 static inline ssize_t
 sockwrite(void *strm, const void *buf, size_t sze)
 {
-       return write(*((int *)strm), buf, sze);
+       return fwrite(buf, sze, 1, (FILE *)strm) * sze;
 }
 
 static inline int
 sockflush(void *strm)
 {
-       /* noop, we don't use a stream in the normal case */
-       return 0;
+       return fflush((FILE *)strm);
 }
 
 static inline int
 sockclose(void *strm)
 {
-       return close(*((int *)strm));
+       return fclose((FILE *)strm);
 }
 
 static inline const char *
@@ -615,6 +614,15 @@ server_queuereader(void *d)
                        }
 #endif
 
+                       if (self->transport == W_PLAIN) {
+                               self->strm = fdopen(self->fd, "w");
+                               if (self->strm == NULL) {
+                                       logerr("failed to open stream: %s\n", strerror(errno));
+                                       close(self->fd);
+                                       self->fd = -1;
+                                       continue;
+                               }
+                       }
 #ifdef HAVE_GZIP
                        if (self->transport == W_GZIP) {
                                self->strm = gzdopen(self->fd, "w");
@@ -813,7 +821,6 @@ server_new(
        }
        ret->fd = -1;
        if (transport == W_PLAIN) {
-               ret->strm = &(ret->fd);
                ret->strmwrite = &sockwrite;
                ret->strmflush = &sockflush;
                ret->strmclose = &sockclose;