Ngx中websocket服务的配置
websocket的连接有怎样的要求?
websocket需要请求头和响应头都设置 Upgrade: WebSocket
和 Connection: Upgrade
。
# 例如
location /chat/ {
proxy_pass http://backend;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
对代理服务器的请求中“Connection”标头字段的值取决于客户端请求标头中“Upgrade”字段的存在:
http {
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
server {
...
location /chat/ {
proxy_pass http://backend;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
}
}
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