nginx log.io websocket config_linux教程_开发教程

将nginx部署到log.io前端后发现功能虽然正常，但控制台有错误记录

WebSocket connection to 'ws://logs.renjie.me/socket.io/1/websocket/QqAw_JLwsOqC_w1kG6mr' failed: Error during WebSocket handshake: Unexpected response code: 502

接着就是刷屏式的如下请求了

XHR finished loading: GET "http://logs.renjie.me/socket.io/1/xhr-polling/QqAw_JLwsOqC_w1kG6mr?t=1450325139049".

猜测肯定遇到降级处理了，找到了其依赖的socket.io源码确认果然如此

module.exports = {

websocket: require('./websocket')

, flashsocket: require('./flashsocket')

, htmlfile: require('./htmlfile')

, 'xhr-polling': require('./xhr-polling')

, 'jsonp-polling': require('./jsonp-polling')

};

Remote Address:120.25.163.48:80

Request URL:http://logs.renjie.me/socket.io/1/?t=1450326393264

Request Method:GET

Status Code:200 OK

==================》

Connection:keep-alive

Content-Type:text/plain

Date:Thu, 17 Dec 2015 04:26:33 GMT

Server:nginx/1.6.3

Transfer-Encoding:chunked

poo25heDWcamJuUXG6mt:60:60:websocket,htmlfile,xhr-polling,jsonp-polling

那问题基本归根与nginx对于websocket这种新协议的代理问题，简单优化配置如下

upstream logs {

server 127.0.0.1:28778;

}

map $http_upgrade $connection_upgrade {

default upgrade;

'' close;

}

server {

listen 80;

server_name logs.renjie.me;

location / {

proxy_pass http://logs;

proxy_http_version 1.1;

proxy_set_header Upgrade $http_upgrade;

proxy_set_header Connection "Upgrade";

}

可见不用新开端口服务，直接在现有的http端口通道上进行改造即可

同时附上websocket握手协议的相关记录以方便日后进行深入研究

Request URL:ws://logs.renjie.me/socket.io/1/websocket/poo25heDWcamJuUXG6mt

Request Method:GET

Status Code:101 Switching Protocols

Request Headers

Connection:Upgrade

Sec-WebSocket-Extensions:permessage-deflate; client_max_window_bits

Sec-WebSocket-Key:liT05Oj1ZyHrhtj8E7YBAw==

Sec-WebSocket-Version:13

Upgrade:websocket

User-Agent:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36

Response Headers

Connection:upgrade

Sec-WebSocket-Accept:Xufj5Cntpx6HMfTp2TVRyfp9SYw=

Server:nginx/1.6.3

Upgrade:websocket

(责任编辑：好模板)