套接字send()卡在C中
我正在尝试连接两台机器，例如机器 A 和 B。我正在尝试将 TCP 消息从 A 发送到 B（一种方式）。在正常情况下，这工作得很好。当通信顺利时，如果 B 中的套接字关闭，则 A 中的 send() 将永远卡住。它将进程置于僵尸状态。我的机器 A 中的套接字处于阻塞模式。下面是永远卡住的代码。
if (send (txSock,&txSockbuf,sizeof(sockstruct),0) == -1) {
printf ("Error in sending the socket Data\n");
}
else {
printf ("The SENT String is %s \n",sock_buf);
}
如何确定另一侧插座是否关闭？如果目标套接字关闭，send 返回什么？会选择有帮助。
I'm trying to connect two machines, say machine A and B. I'm trying to send TCP message from A to B (One way). In normal scenario this works fine. When the communication is smooth, if the socket in B is closed, send() from A is stuck forever. And it puts process into Zombie state. I have socket in blocked mode in machine A. Below is the code that stuck forever.
if (send (txSock,&txSockbuf,sizeof(sockstruct),0) == -1) {
printf ("Error in sending the socket Data\n");
}
else {
printf ("The SENT String is %s \n",sock_buf);
}
How do I find if the other side socket is closed?? What does send return if the destination socket is closed?? Would select be helpful.
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处于“僵尸”状态的进程意味着它已经退出，但其父进程尚未读取其返回码。可能发生的情况是，您的进程正在接收 SIGPIPE 信号（这是当您写入关闭的套接字时默认收到的信号），您的程序已经终止，但僵尸状态尚未解决。
此相关问题提供了有关 SIGPIPE 及其处理方法的更多信息：SIGPIPE，损坏的管道
A process in the "zombie" state means that it has already exited, but its parent has not yet read its return code. What's probably happening is that your process is receiving a SIGPIPE signal (this is what you'll get by default when you write to a closed socket), your program has already terminated, but the zombie state hasn't yet been resolved.
This related question gives more information about SIGPIPE and how to handle it: SIGPIPE, Broken pipe