And*_*ich 3 ruby-on-rails nginx server-sent-events ruby-on-rails-4
我在与unix套接字绑定的后端(带有Puma的Rails)上有一个应用服务器,这是nginx config的相关部分
location /live/ {
proxy_pass http://app; # match the name of upstream directive which is defined above
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_redirect off;
proxy_set_header Connection 'Upgrade';
proxy_http_version 1.1;
chunked_transfer_encoding off;
send_timeout 300;
proxy_send_timeout 300;
keepalive_timeout 7200;
}
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SSE事件通过/ live /来,因此我调整了ngix config来处理对该路由的所有请求。
问题是连接完全在60秒后关闭。这是我在响应标题中看到的
Cache-Control:no-cache
Connection:keep-alive
Content-Type:text/event-stream
Date:Mon, 04 Nov 2013 13:41:52 GMT
Server:nginx
X-Content-Type-Options:nosniff
X-Frame-Options:SAMEORIGIN
X-Request-Id:7065a7bc-3450-4fe2-b60c-33dfa8d41951
X-Runtime:0.010852
X-UA-Compatible:chrome=1
X-XSS-Protection:1; mode=block
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因此,似乎nginx将初始响应设置为close。为什么keepalive_timeout在这里不起作用。
在nginx error.log中我看到了
2013/11/04 13:42:52 [error] 3689#0: *9 upstream timed out (110: Connection timed out) while reading upstream, client: ......., server: myapp.com, request: "GET /live/events HTTP/1.1", upstream: "http://unix:/home/ubuntu/myapp/shared/sockets/puma.sock:/live/events", host: "myapp.com"
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我认为您应该检查您的proxy_connect_timeout(默认 60s ;) )和您的proxy_read_timeout(默认 60s),这可能会导致此错误。您可以在此处找到文档:
http://wiki.nginx.org/HttpProxyModule#proxy_connect_timeout
万一其他人遇到Nginx + Puma + Rails的超时错误的麻烦,Nginx中的以下配置应将超时增加到605秒(10分钟5秒):
server {
# ... here goes your proxy configuration
# Avoid 504 HTTP Timeout Errors
proxy_connect_timeout 605;
proxy_send_timeout 605;
proxy_read_timeout 605;
send_timeout 605;
keepalive_timeout 605;
}
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