套接字缓冲区的大小

来源：互联网发布：免费视频修复软件编辑：程序博客网时间：2024/05/07 15:06

SO_RCVBUF：接受缓冲区大小

SO_SNDBUF: 发送缓冲区大小

操作程序举例：

socklen_t optlen;

optlen = sizeof(int);

/*get SO_RCVBUF*/

int rcvbuflen;

if(0 != getsockopt(listenfd,SOL_SOCKET,SO_RCVBUF,&rcvbuflen,&optlen)){

printf("Getsockopt error.\n");

exit(1);

}

/*get SO_SNDBUF*/

int sndbuflen;

if(0 != getsockopt(listenfd,SOL_SOCKET,SO_SNDBUF,&sndbuflen,&optlen)){

printf("Getsockopt error.\n");

exit(1);

}

printf("before-->receive:%d,send:%d\n",rcvbuflen,sndbuflen);

/*set SO_RCVBUF*/

rcvbuflen = 512000;

if(0 != setsockopt(listenfd,SOL_SOCKET,SO_RCVBUF,&rcvbuflen,optlen)){

printf("Setsockopt error.\n");

exit(1);

}

/*set SO_SNDBUF*/

sndbuflen = 512000;

if(0 != setsockopt(listenfd,SOL_SOCKET,SO_SNDBUF,&sndbuflen,optlen)){

printf("Setsockopt error.\n");

exit(1);

}

if(0 != getsockopt(listenfd,SOL_SOCKET,SO_RCVBUF,&sndbuflen,&optlen)){

printf("Getsockopt error.\n");

exit(1);

}

if(0 != getsockopt(listenfd,SOL_SOCKET,SO_SNDBUF,&sndbuflen,&optlen)){

printf("Getsockopt error.\n");

exit(1);

}

printf("after-->receive:%d,send:%d\n",rcvbuflen,sndbuflen);

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