NGINX 1.9が汎用TCPサーバとして使えるようになっていた件 ref: http://qiita.com/dseg/items/75bf517738a1d8b2d036

chargen.lua

-- chargen.lua
-- RFC 864 (https://tools.ietf.org/html/rfc864)

-- Init character table
local chars = {}
for j = 0x21, 0x7E do table.insert(chars, string.char(j)) end

-- Main loop
local size, i, p = #chars, 0, ngx.print
while true do
    local ok, err = p(chars[i % size + 1])
    -- If client force abort, error will occure
    if not ok then
        ngx.log(ngx.ERR, "chargen.lua: Socket Write Error. ", err)
        ngx.exit(200)
        break
    end
    i = i + 1
    -- wrap line
    if (i % 72) == 0 then p("\r\n") end
end

echo.lua

local p = ngx.say
local sock = assert(ngx.req.socket(true))
if not sock then
    ngx.log(ngx.ERR, "Failed to get the socket. Exiting...")
    return
end

-- Main loop
while (true) do
    local data, err = sock:receive() -- Read a data from downstream
    if not err then
        p(data) -- output data
    else
        ngx.log(ngx.ERR, err)
        ngx.exit(200)
        break
    end
end

file1.txt

cd nginx-1.9.10
./configure \
   --with-stream \
   --with-stream_ssl_module \
   --add-module="../stream-lua-nginx-module-master" \
   --add-module="../stream-echo-nginx-module-master" \
...後略...

file10.txt

$ telnet 127.0.0.1 7
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
hello ←ENTERキー
hello
^]
telnet> q
Connection closed.

file11.txt

$ telnet 127.0.0.1 7
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
hello ←ENTERキー
hello
^]
telnet> q
Connection closed.

file12.txt

$ telnet 127.0.0.1 7
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
hello ←ENTERキー
hello
^]
telnet> q
Connection closed.

file13.txt

# Nginx + Lua (先述のecho.lua)
$ echoserver/client -c50 -o2 -h10000 -p7 127.0.0.1
Throughput: 64447.98 [#/sec]

# C++ epoll echoサーバ起動
$ echoserver/server_epoll

$ echoserver/client -c50 -o2 -h10000 -p5000 127.0.0.1
Throughput: 78058.97 [#/sec]

file14.txt

echo ngx.say("hello") > test.lua

$ resty -e 'ngx.say ("hello")'
hello

$ resty test.lua
hello

file15.txt

echo ngx.say("hello") > test.lua

$ resty -e 'ngx.say ("hello")'
hello

$ resty test.lua
hello

file2.txt

cd nginx-1.9.10
./configure \
   --with-stream \
   --with-stream_ssl_module \
   --add-module="../stream-lua-nginx-module-master" \
   --add-module="../stream-echo-nginx-module-master" \
...後略...

file3.txt

$ nc 127.0.0.1 13
2016-02-08 19:52:49

file4.txt

$ nc 127.0.0.1 13
2016-02-08 19:52:49

file5.txt

$ nc 127.0.0.1 9
hogefuga ← ENTERキー

(何もecho backされない)

file6.txt

$ nc 127.0.0.1 9
hogefuga ← ENTERキー

(何もecho backされない)

file7.txt

% nc 127.0.0.1 19
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgh
ijklmnopqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQR
STUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<
=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&
'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmn
opqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWX
YZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<=>?@AB
CDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&'()*+,

← CTRL+C

file8.txt

% nc 127.0.0.1 19
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgh
ijklmnopqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQR
STUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<
=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&
'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmn
opqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWX
YZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<=>?@AB
CDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&'()*+,

← CTRL+C

file9.txt

% nc 127.0.0.1 19
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgh
ijklmnopqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQR
STUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<
=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&
'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmn
opqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWX
YZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&'()*+,-./0123456789:;<=>?@AB
CDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&'()*+,

← CTRL+C

nginx.conf

location /something {
  lua_code_cache off;
  content_by_lua_file /path/to/lua/file.lua;
}