Linux 上写C++（9） 判断TCP IP是否开放

//判断TCP/IP是否开放

int IVR_COMMON::GetIPIsConnect(char *ip,char *port,long timeout)

{

int fd;

struct sockaddr_in addr;

struct timeval timeo = {3, 0};

socklen_t len = sizeof(timeo);

fd = socket(AF_INET, SOCK_STREAM, 0);

timeo.tv_sec = timeout;

setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &timeo, len);

addr.sin_family = AF_INET;

addr.sin_addr.s_addr = inet_addr(ip);

addr.sin_port = htons(atoi(port));

if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {

if (errno == EINPROGRESS) {

WriteLog("connect","errno");

close(fd);

return -1;

}

WriteLog("connect","success");

close(fd);

return 0;

}

close(fd);

WriteLog("connect","success");

return 0;

}