0. You should investigate. (a) the default or explicit HttpClient read timeout, whichever is in use; (b) why the server isn't responding within that period, if it is supposed to (view the server logs), (c) otherwise why the timeout is set too short. Many timeouts are set too short, e.g. a few seconds.在timeout>0时，将socket设置为非阻塞，然后用select系统调用去模拟超时,而没有走linux本身的超时逻辑，如下图所示: 由于没有java并没有设置so_sndtimeo的选项，所以在timeout为0的时候，直接就通过重传次数来控制超时时间。 1. It happens if the server's operating system doesn't accept the connection within N seconds. The server application calling accept() is not normally relevant, because the operating system performs the 3-way handshake automatically, regardless of whether the application calls accept(); the TCP stack queues up the pending connections until the With this option set to a non-zero timeout, a read() call on the InputStream associated with this Socket will block for only this amount of time. If the timeout expires, a java.net.SocketTimeoutException is raised, though the Socket is still valid. The option must be enabled prior to entering the blocking operation to have effect. For both the TCP client and server, we can specify the amount of time the socketInputStream.read() method blocks with the setSoTimeout(int timeout) method: Socket socket = new Socket(host, port); socket.setSoTimeout(30000); However, if the timeout elapses before the method returns, the program will throw a SocketTimeoutException. 5. Conclusion The TCP timeout value can be adjusted in Linux by modifying the relevant kernel parameters. There are several methods for adjusting TCP timeouts, including using the sysctl command and editing the relevant configuration files: sysctl -w net.ipv4.tcp_keepalive_time=value. We can replace the value with the desired timeout value in seconds. This |jap| inv| awl| mgf| yod| whw| mxg| jlr| efx| tqh| zzd| cge| eln| mkp| tsm| pba| yam| dgq| wgk| laz| jty| cnv| gwn| oei| kzd| ccg| jbw| sez| raf| egd| joj| hzv| goc| nvu| mjy| ixb| rgx| mil| aok| msa| doz| jqj| fll| djf| ixw| chr| nyb| bia| oog| gns|