accept 返回 22 的错误,strerror为:Invalid argument, 救命呀,什么原因

[mukey]

大家帮忙看看:


#define SERVER_IP "10.3.144.212"
#define SERVER_PORT "8012"

int iServerFd=-1;
int gSerialNo=0;

int tcpListenProc (char *ip, char* port)
{
int listenSock = 0,
reuse_addr = 0;

if (!ip || !port)
{
return -2;
}

listenSock =socket(AF_INET,SOCK_STREAM,0);

struct sockaddr_in addr = {0};

addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr(ip);
addr.sin_port = htons(atoi(port));

reuse_addr = 1;
if(setsockopt(listenSock, 1, SO_REUSEADDR,(char *)&reuse_addr,sizeof(reuse_addr)) < 0)
{
close(listenSock);
return -2;
}

if (bind(listenSock,(struct sockaddr*)&addr,sizeof(addr))==0 && listen(listenSock, 10)==0)
{
}
else
{
return -3;
}

return listenSock;
}

int main(int argc, char **argv)
{
int connFd;
socklen_t addrLen;
struct sockaddr_in clientAddr={0};
char buf[2048];
int ret = -1;

iServerFd = tcpListenProc(SERVER_IP, SERVER_PORT);
if ( iServerFd<0 )
{
printf("iServerFd error. ret: %d\n", ret);
}
printf("iServerFd is %d\n", iServerFd);

for( ; ; )
{
connFd = accept (iServerFd, (struct sockaddr *)&clientAddr, &addrLen);
if ( connFd <= 0 )
{
printf("error no: %d, error string: %s\n", errno, strerror(errno) );
continue;
}
else{
printf("connFd is %d\n", connFd);
snprintf(buf, sizeof(buf), "gSerialNo is %d\n", gSerialNo);
printf("-------[%s]\n", buf);
Send(connFd, buf, strlen(buf), 3);
}
close(connFd);
}

return 0;
}

[doubhor]

在accept前面加上：
addrLen = sizeof(clientAddr);

MSDN上面关于这个的说明不是很好，应该对这个变量赋值