nginx请求转发webSocket

原由

1.我有一个socket服务，用ip访问是成功的，但是老板说用这个不行，要用nginx请求转发，转发内网地址到某个域名

2.但是我改成了指定域名后失败，因为我没有配置nginx.conf

3.接下来一起学习下，怎么在nginx中配置socket转发

http的很简单，如下(---可跳过---)

server
{
listen 80;
server_name *.mynetwork.cn mynetwork.cn;
location / {
add_header backendIP $upstream_addr;
add_header backendCode $upstream_status;
proxy_pass http://192.168.9.101:9999;
}
access_log logs/mynetwork.cn.log;
}

http的单域名，多转发，使用location /的实现

events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;

** log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';**

** access_log /var/log/nginx/access.log main;
error_log /var/log/nginx/error.log;

 sendfile        on;
 #tcp_nopush     on;**

** keepalive_timeout 65;**

** #gzip on; include /etc/nginx/conf.d/*.conf;

 server

{
listen 30001;
server_name .xxx.com xxx.com;
location ^~/mq/ {
add_header backendIP $upstream_addr;
add_header backendCode $upstream_status;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://xxx:30002/**;
}
access_log /var/log/nginx/mq.log;*

** location ^~/es/ {
add_header backendIP $upstream_addr;
add_header backendCode $upstream_status;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://xxx:30001/;**

** }
access_log /var/log/nginx/es.log;**

}

}

测试，域名相同，请求不同

** 成功**

正片开始

首先find / -name 找到nginx.conf，他一般在**/etc/nginx**的目录下面

开启socket核心就是加2行代码

    proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection "upgrade"; 

这个是我原来的接口8087地址（server_name填写域名地址)

我的后端socket的地址是

ws://192.168.9.101:8087/openSocket

我想要的是当访问openSocket后，能够连接上

配置如下

    location /openSocket {
     add_header backendIP $upstream_addr;
     add_header backendCode $upstream_status;
      proxy_redirect off;
     proxy_connect_timeout 6000;
     proxy_read_timeout 6000; 
     proxy_send_timeout 6000;
     proxy_set_header Host 192.168.9.101:8087;
     proxy_pass http://192.168.9.101:8087/openSocket;
        proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection "upgrade"; 
 }

把这个复制到nginx.conf的server的接口目录下

这个是其中http_upgrade的引用，放在与server同级的位置

map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}

替换/etc/nginx/nginx.conf

sudo nginx -s reload更新服务

重新打开网页客户端，进行连接

这个连接成功，是我服务端发送给客户端的