Defines a timeout for reading client request header. If a client does not transmit the entire header within this time,
the 408 (Request Time-out) error is returned to the client.
接收客户端body超时, 默认60s, 如果连续的60s内没有收到客户端的1个字节, 返回408
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Syntax: client_body_timeout time;
Default:
client_body_timeout 60s;
Context: http, server, location
Defines a timeout for reading client request body. The timeout is set only for a period between two successive read operations, not for the transmission of the whole request body.
If a client does not transmit anything within this time,
the 408 (Request Time-out) error is returned to the client.
The first parameter sets a timeout during which a keep-alive client connection will stay open on the server side. The zero value disables keep-alive client connections.
The optional second parameter sets a value in the “Keep-Alive: timeout=time” response header field. Two parameters may differ.
The “Keep-Alive: timeout=time” header field is recognized by Mozilla and Konqueror. MSIE closes keep-alive connections by itself in about 60 seconds.
可以理解为TCP连接关闭时的SO_LINGER延时设置，默认5s
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Syntax: lingering_timeout time;
Default:
lingering_timeout 5s;
Context: http, server, location
When lingering_close is in effect, this directive specifies the maximum waiting time for more client data to arrive. If data are not received during this time,
the connection is closed. Otherwise, the data are read and ignored, and nginx starts waiting for more data again.
The “wait-read-ignore” cycle is repeated, but no longer than specified by the lingering_time directive.
域名解析超时，默认30s
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Syntax: resolver_timeout time;
Default:
resolver_timeout 30s;
Context: http, server, location
Sets a timeout for name resolution, for example:
resolver_timeout 5s;
发送数据至客户端超时, 默认60s, 如果连续的60s内客户端没有收到1个字节, 连接关闭
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Syntax: send_timeout time;
Default:
send_timeout 60s;
Context: http, server, location
Sets a timeout for transmitting a response to the client. The timeout is set only between two successive write operations,
not for the transmission of the whole response. If the client does not receive anything within this time, the connection is closed.
nginx与upstream server的连接超时时间
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Syntax: proxy_connect_timeout time;
Default:
proxy_connect_timeout 60s;
Context: http, server, location
Defines a timeout for establishing a connection with a proxied server. It should be noted that this timeout cannot usually exceed 75 seconds.
