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linux和windows下用setsockopt设置SO_SNDTIMEO,SO_RCVTIMEO的参数的一点区别

2011-07-06 11:50:00| 分类： programming | 标签： |举报 |字号大中小订阅

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UDP的socket在某些情况：如对方关闭时，本地可能sendto不出去数据，然后recvfrom就会被阻塞，这时就需要设置这两个参数的值提高程序质量。

linux:

struct timeval timeout={3,0};//3s

int ret=setsockopt(sock_fd,SOL_SOCKET,SO_SNDTIMEO,&timeout,sizeof(timeout));

int ret=setsockopt(sock_fd,SOL_SOCKET,SO_RCVTIMEO,&timeout,sizeof(timeout));

如果ret==0 则为成功,-1为失败,这时可以查看errno来判断失败原因

int recvd=recv(sock_fd,buf,1024,0);

if(recvd==-1&&errno==EAGAIN)

{

printf("timeout\n");

}

windows:

int timeout = 3000; //3s

int ret=setsockopt(sock_fd,SOL_SOCKET,SO_SNDTIMEO,&timeout,sizeof(timeout));

int ret=setsockopt(sock_fd,SOL_SOCKET,SO_RCVTIMEO,&timeout,sizeof(timeout));

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              blogAbstract:'UDP的socket在某些情况：如对方关闭时，本地可能sendto不出去数据，然后recvfrom就会被阻塞，这时就需要设置 这两个参数的值提高程序质量。<br\><div id=\"m_blog\"\><div id=\"blog_text\"\><p\>linux:</p\> <p\>     struct timeval timeout={3,0};//3s</p\> <p\>     int ret=setsockopt(sock_fd,SOL_SOCKET,SO_SNDTIMEO,&timeout,sizeof(timeout));</p\> <p\>     int ret=setsockopt(sock_fd,SOL_SOCKET,SO_RCVTIMEO,&timeout,sizeof(timeout));</p\></div\></div\>',
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