通过nginx将POST数据传递给unix域套接字

Question

我有一个unix域套接字文件，它正在使用nc命令。现在我想通过nginx访问它，但它不起作用。我错过了什么吗？

用nc =>测试它有效

$ echo  '{ "method" : "getinfo", "params" : [], "id" : "1" }' | nc -U /home/zono/.lightning/lightning-rpc
{ "jsonrpc": "2.0", "id" : "1", "result" :
{
  "id": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
}

通过nginx测试=>它不起作用

// /etc/nginx/sites-enabled/default
upstream nginx-internal-sock {
  server unix:/home/zono/.lightning/lightning-rpc;
}

server {
  listen 80;
  location / {
    proxy_pass http://nginx-internal-sock;
  }
}

$ curl -H "content-type: application/json" -X POST --data '{ "method" : "getinfo", "params" : [], "id" : "1" }' http://127.0.0.1
2019-03-20T04:25:52.551Z lightningd(30143):jcon fd 32: Invalid token in json input: 'POST / HTTP/1.0??Host: nginx-internal-sock??Connection: close??C'

---

更新1

有一个发展。但是我无法获得整个数据。

// install nginx-extras
apt-get install nginx-extras

// /etc/nginx/sites-enabled/default
server {
  listen 80;

  location / {
        content_by_lua '
            ngx.req.read_body()
            local body_data = ngx.req.get_body_data()

            local sock = ngx.socket.tcp()
            local ok, err = sock:connect("unix:/home/zono/.lightning/lightning-rpc")

            local bytes = sock:send(body_data)

            local line, err = sock:receive("*a")
            ngx.say(line)

            ok, err = sock:close()
        ';
  }
}

// Response is nil
$ curl -X POST --data '{ "method" : "getinfo", "params" : [], "id" : "1" }' http://127.0.0.1
nil

// /var/log/nginx/error.log
2019/03/20 07:43:39 [error] 4926#4926: *35 lua tcp socket read timed out, client: 127.0.0.1, server: , request: "POST / HTTP/1.1", host: "127.0.0.1"

// When I set "sock:receive("*l")" the response is the part of the data.
$ curl -X POST --data '{ "method" : "getinfo", "params" : [], "id" : "1" }' http://127.0.0.1
{ "jsonrpc": "2.0", "id" : "1", "result" :

我正在查看参考资料。 http://w3.impa.br/~diego/software/luasocket/tcp.html

'* a'：从套接字读取，直到连接关闭。没有执行行尾转换;

'* l'：从套接字读取一行文本。该行由LF字符（ASCII 10）终止，可选地前面带有CR字符（ASCII 13）。 CR和LF字符不包含在返回的行中。实际上，模式忽略了所有CR字符。这是默认模式;

number：使方法从套接字读取指定的字节数。

Answer 1

我找到了答案。

// install nginx-extras
apt-get install nginx-extras

// /etc/nginx/sites-enabled/default
server {
  listen 80;

  location / {
        content_by_lua '
            ngx.req.read_body()
            local body_data = ngx.req.get_body_data()

            local sock = ngx.socket.tcp()
            local ok, err = sock:connect("unix:/home/zono/.lightning/lightning-rpc")

            local bytes = sock:send(body_data)

            local readline = sock:receiveuntil("\\n\\n")
            local line, err, part = readline()
            if line then
                ngx.say(line)
            end

            ok, err = sock:close()
        ';
  }
}

// curl
$ curl -X POST --data '{ "method" : "getinfo", "params" : [], "id" : "1" }' http://127.0.0.1