谁能帮我看看这很简单的socket程序哪错了

Lumj

完成的功能非常简单,发送方(Sender.exe)发送"Hello?"到接收方(Receiver.exe),接收方显示之.

1. Sender.cpp:
   
2. #include <windows.h>
   
3. 
   
4. #pragma comment(lib,"WS2_32.lib")
   
5. 
   
6. #include <stdio.h>
   
7. 
   
8. int main() {
   
9.         WSADATA wsaData;
   
10.         WORD sockVersion = MAKEWORD(2,0);
    
11.         WSAStartup(sockVersion,&wsaData);
    
12. 
    
13.         char str[20];
    
14.         puts("IP address: ");
    
15.         gets(str);
    
16. 
    
17.         sockaddr_in remoteAddr;
    
18.         remoteAddr.sin_family = AF_INET;
    
19.         remoteAddr.sin_addr.S_un.S_addr = inet_addr(str);
    
20.         remoteAddr.sin_port = htons(80);
    
21. 
    
22.         SOCKET senderSocket = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
    
23.         connect(senderSocket,(LPSOCKADDR)&remoteAddr,sizeof(remoteAddr));
    
24. 
    
25.         char buf[] = "Hello?";
    
26.         send(senderSocket,buf,sizeof(buf) - 1,0);
    
27. 
    
28.         getchar();
    
29.         closesocket(senderSocket);
    
30. 
    
31.         WSACleanup();
    
32. 
    
33.         return 0;
    
34. }

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1. Receiver.cpp:
   
2. #include <windows.h>
   
3. 
   
4. #pragma comment(lib,"WS2_32.lib")
   
5. 
   
6. #include <stdio.h>
   
7. 
   
8. int main() {
   
9.         WSADATA wsaData;
   
10.         WORD sockVersion = MAKEWORD(2,0);
    
11.         WSAStartup(sockVersion,&wsaData);
    
12. 
    
13.         sockaddr_in localAddr;
    
14.         localAddr.sin_family = AF_INET;
    
15.         localAddr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
    
16.         localAddr.sin_port = htons(80);
    
17. 
    
18.         SOCKET listenerSocket = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
    
19.         bind(listenerSocket,(LPSOCKADDR)&localAddr,sizeof(sockaddr_in));
    
20.         listen(listenerSocket,1);
    
21. 
    
22.         sockaddr_in remoteAddr;
    
23.         int nRemoteAddrLen = sizeof(sockaddr_in);
    
24.         SOCKET sessionSocket = accept(listenerSocket,(LPSOCKADDR)&remoteAddr,&nRemoteAddrLen);
    
25. 
    
26.         char buf[100];
    
27.         int receivedLen = recv(sessionSocket,buf,sizeof(buf),0);
    
28.         buf[receivedLen] = '\0';
    
29. 
    
30.         printf("Received from %s: %s\n",inet_ntoa(remoteAddr.sin_addr),buf);
    
31.         getchar();
    
32. 
    
33.         closesocket(sessionSocket);
    
34.         closesocket(listenerSocket);
    
35. 
    
36.         WSACleanup();
    
37. 
    
38.         return 0;
    
39. }

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在两台电脑上分别运行,接收方就是接收不到,而使用127.0.0.1在本地试了倒能产生正确结果.
谢谢.
编译成的程序在附件里,以供方便

[ 本帖最后由 Lumj 于 2009-2-3 23:19 编辑 ]

月魂

端口的问题吧 你换用5000以上的端口试试