新手学习网络编程第一个例子就很麻烦，出了错误不知道如何办了。
RT.这是《Windows网络编程的代码》

服务端

C/C++ code

// Module Name: tcpserver.cpp//// Description:////    This sample illustrates how to develop a simple TCP server application//    that listens for a TCP connection on port 5150 and receives data. This //    sample is implemented as a console-style application and simply prints //    status messages when a connection is accepted and when data is received //    by the server.//// Compile:////    cl -o tcpserver tcpserver.cpp ws2_32.lib//// Command Line Options:////    tcpserver.exe////    NOTE: There are no command parameters. //#include <winsock2.h>#include <stdio.h>#pragma comment(lib, "ws2_32.lib")void main(void){    WSADATA              wsaData;    SOCKET               ListeningSocket;    SOCKET               NewConnection;    SOCKADDR_IN          ServerAddr;    SOCKADDR_IN          ClientAddr;    int                  ClientAddrLen;    int                  Port = 5150;    int                  Ret;    char                 DataBuffer[1024];    // Initialize Winsock version 2.2    if ((Ret = WSAStartup(MAKEWORD(2,2), &wsaData)) != 0)    {        // NOTE: Since Winsock failed to load we cannot use WSAGetLastError         // to determine the error code as is normally done when a Winsock         // API fails. We have to report the return status of the function.        printf("WSAStartup failed with error %d\n", Ret);        return;    }    // Create a new socket to listening for client connections.    if ((ListeningSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP))         == INVALID_SOCKET)    {        printf("socket failed with error %d\n", WSAGetLastError());        WSACleanup();        return;    }     // Setup a SOCKADDR_IN structure that will tell bind that we    // want to listen for connections on all interfaces using port    // 5150. Notice how we convert the Port variable from host byte    // order to network byte order.    ServerAddr.sin_family = AF_INET;    ServerAddr.sin_port = htons(Port);        ServerAddr.sin_addr.s_addr = htonl(INADDR_ANY);    // Associate the address information with the socket using bind.    if (bind(ListeningSocket, (SOCKADDR *)&ServerAddr, sizeof(ServerAddr))         == SOCKET_ERROR)    {        printf("bind failed with error %d\n", WSAGetLastError());        closesocket(ListeningSocket);        WSACleanup();        return;    }    // Listen for client connections. We used a backlog of 5 which is    // normal for many applications.    if (listen(ListeningSocket, 5) == SOCKET_ERROR)    {        printf("listen failed with error %d\n", WSAGetLastError());        closesocket(ListeningSocket);        WSACleanup();        return;    }     printf("We are awaiting a connection on port %d.\n", Port);    // Accept a new connection when one arrives.    if ((NewConnection = accept(ListeningSocket, (SOCKADDR *) &ClientAddr,        &ClientAddrLen)) == INVALID_SOCKET)    {        printf("accept failed with error %d\n", WSAGetLastError());        closesocket(ListeningSocket);        WSACleanup();        return;    }    printf("We successfully got a connection from %s:%d.\n",        inet_ntoa(ClientAddr.sin_addr), ntohs(ClientAddr.sin_port));    // At this point you can do two things with these sockets. Await    // for more connections by calling accept again on ListeningSocket    // and start sending or receiving data on NewConnection. For     // simplicity We will stop listening for more connections by closing    // ListeningSocket. We will start sending and receiving data on    // NewConnection.    closesocket(ListeningSocket);    // Start sending and receiving data on NewConnection. For simplicity,    // we will just receive some data and report how many bytes were    // received.    printf("We are waiting to receive data...\n");    if ((Ret = recv(NewConnection, DataBuffer, sizeof(DataBuffer), 0))         == SOCKET_ERROR)    {        printf("recv failed with error %d\n", WSAGetLastError());        closesocket(NewConnection);        WSACleanup();        return;    }    printf("We successfully received %d byte(s).\n", Ret);    // For this application we do not plan to do anything else with the    // connection so we will just close the connection.    printf("We are now going to close the client connection.\n");    closesocket(NewConnection);    // When your application is finished handling the connections     // call WSACleanup.    WSACleanup();    system("pause");} 
 

客户端

C/C++ code

// Module Name: tcpclient.cpp//// Description:////    This sample illustrates how to develop a simple TCP client application//    that can send a simple "hello" message to a TCP server listening on port 5150.//    This sample is implemented as a console-style application and simply prints//    status messages a connection is made and when data is sent to the server.//// Compile:////    cl -o tcpclient tcpclient.cpp ws2_32.lib//// Command Line Options:////    tcpclient.exe <server IP address> //#include <winsock2.h>#include <stdio.h>#pragma comment(lib, "ws2_32.lib")void main(int argc, char **argv){    WSADATA              wsaData;    SOCKET               s;    SOCKADDR_IN          ServerAddr;    int                  Port = 5150;    int                  Ret;    if (argc <= 1)    {        printf("USAGE: tcpclient <Server IP address>.\n");        return;    }    // Initialize Winsock version 2.2    if ((Ret = WSAStartup(MAKEWORD(2,2), &wsaData)) != 0)    {        // NOTE: Since Winsock failed to load we cannot use WSAGetLastError         // to determine the error code as is normally done when a Winsock         // API fails. We have to report the return status of the function.        printf("WSAStartup failed with error %d\n", Ret);        return;    }    // Create a new socket to make a client connection.    if ((s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP))        == INVALID_SOCKET)    {        printf("socket failed with error %d\n", WSAGetLastError());        WSACleanup();        return;    }    // Setup a SOCKADDR_IN structure that will be used to connect    // to a listening server on port 5150. For demonstration    // purposes, we required the user to supply an IP address    // on the command line and we filled this field in with the     // data from the user.    ServerAddr.sin_family = AF_INET;    ServerAddr.sin_port = htons(Port);        ServerAddr.sin_addr.s_addr = inet_addr(argv[1]);    // Make a connection to the server with socket s.    printf("We are trying to connect to %s:%d...\n",        inet_ntoa(ServerAddr.sin_addr), htons(ServerAddr.sin_port));    if (connect(s, (SOCKADDR *) &ServerAddr, sizeof(ServerAddr))         == SOCKET_ERROR)    {        printf("connect failed with error %d\n", WSAGetLastError());        closesocket(s);        WSACleanup();        return;    }     printf("Our connection succeeded.\n");    // At this point you can start sending or receiving data on    // the socket s. We will just send a hello message to the server.    printf("We will now try to send a hello message.\n");    if ((Ret = send(s, "Hello", 5, 0)) == SOCKET_ERROR)    {        printf("send failed with error %d\n", WSAGetLastError());        closesocket(s);        WSACleanup();        return;    }    printf("We successfully sent %d byte(s).\n", Ret);    // When you are finished sending and receiving data on socket s,    // you should close the socket.    printf("We are closing the connection.\n");    closesocket(s);    // When your application is finished handling the connection, call    // WSACleanup.    WSACleanup();    system("pause");}

运行服务端总是出现10014的问题。
WSAEFAULT
The addrlen parameter is too small or addr is not a valid part of the user address space.

但是不清楚如何去改，请过来人帮助下。

[解决办法]
系统检测到在一个调用中尝试使用指针参数时的无效指针地址。
[解决办法]
单步调试哪里出的错？