如题
google后得到信息：
WSAEINVAL
(10022)
Invalid argument.
Some invalid argument was supplied (for example, specifying an invalid level
to the setsockopt function).
In some instances, it also refers to the current state of the socket or
instance, calling accept on a socket that is not listening.
于是检查Server，telnet成功
排除写错IP、端口一类的错误，那么问题出在哪呢？
shell下输入：./Client 127.0.0.1 "Hi" 2000
后面这个2000是服务端口
下面是Client的代码，大家有空的话帮忙看一下....初学Socket编程.....谢谢了
int main(int argc,char *argv[])
{
if (argc != 3 && argc !=4 )
DieWithUseMessage("Parameter(s)","<Server Address> <Echo Word> [<Server
Port>]");//这个是输出函数....
char *servIP = argv[1];
char *echoString = argv[2];
in_port_t servPort = (argc == 4) ? atoi(argv[3]) : 7;
int sock = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if (sock < 0)
DieWithSystemMessage("socket() failed");
struct sockaddr_in servAddr;
memset(&servAddr,0,sizeof(servAddr));
servAddr.sin_family = AF_INET;
int rtnVal = inet_pton(AF_INET,servIP,&servAddr.sin_addr.s_addr)；
if (rtnVal == 0)
DieWithUseMessage("inet_pton() failed","invalid address string");
else if (rtnVal < 0)
DieWithSystemMessage("inet_pton() failed");
servAddr.sin_port = htons(servPort);
if (connect(sock,(struct sockaddr*) &servAddr, sizeof(servAddr) <0))
DieWithSystemMessage("connect() failed");//就是这出错了.......
............
}
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