network-白红宇

network

阅读量：5795 次

发布时间：2019-06-18

本文共 1801 字，大约阅读时间需要 6 分钟。

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          #include "server_network.h"int sock_setnonblock(sock_t s){    int flags = 0;    flags = fcntl(s, F_GETFL);    if (flags < 0)        return flags;        flags |= O_NONBLOCK;    if (fcntl(s, F_SETFL, flags) < 0)        return -1;    return 0;}int sock_unsetnonblock(sock_t s){    int flags = 0;    flags = fcntl(s, F_GETFL);    if (flags < 0)        return flags;    flags &= ~O_NONBLOCK;    if (fcntl(s, F_SETFL, flags) < 0)        return -1;    return 0;}int sock_setnodelay(sock_t s){    int flag =1;    return setsockopt(s, SOL_TCP, TCP_NODELAY, (char *)&flag, sizeof(flag));}int sock_set_recv_timeout(sock_t s, int sec){    struct timeval timeout;    timeout.tv_sec = sec;    timeout.tv_usec = 0;    return setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout,                  sizeof(timeout));    }int sock_set_snd_timeout(sock_t s, int sec){    struct timeval timeout;    timeout.tv_sec = sec;    timeout.tv_usec = 0;    return setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout,                  sizeof(timeout));}int sock_set_keepalive(sock_t s, int timeout){    int val = 1;    //设置成keepalive模式    if (setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, &val, sizeof(val)) < 0) {        return -1;    }    //设置探测时间    val = timeout;    if (setsockopt(s, SOL_TCP, TCP_KEEPIDLE, &val, sizeof(val)) < 0) {        return -1;    }    //设置探测间隔时间，1s    val = 1;    if (setsockopt(s, SOL_TCP, TCP_KEEPINTVL, &val, sizeof(val)) < 0) {        return -1;    }    //设置探测次数，3次    val = 3;    if (setsockopt(s, SOL_TCP, TCP_KEEPCNT, &val, sizeof(val)) < 0) {        return -1;    }    return 0;}