WSASocket()的定义
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参考技术ASOCKET WSASocket ( int af, int type, int protocol, LPWSAPROTOCOL_INFO lpProtocolInfo, GROUP g, DWORD dwFlags );
参数说明：
af：[in]一个地址族规范。目前仅支持AF_INET格式，亦即ARPA Internet地址格式。
type：新套接口的类型描述。
protocol：套接口使用的特定协议，如果调用者不愿指定协议则定为0。
lpProtocolInfo：一个指向PROTOCOL_INFO结构的指针，该结构定义所创建套接口的特性。如果本参数非零，则前三个参数（af, type, protocol）被忽略。
g：保留给未来使用的套接字组。套接口组的标识符。
iFlags：套接口属性描述。
在我的代码中出现这个“10038 wsa socket”错误
【中文标题】在我的代码中出现这个“10038 wsa socket”错误【英文标题】：Getting this "10038 wsa socket" error in my code 【发布时间】：2015-07-13 18:10:53 【问题描述】：我目前正在尝试实现一个类来创建和使用 TCP 连接。
（我是 C++ 的新手，所以我可能忘记了一些明显的东西，即使我一直在认真检查我的代码）
请注意，稍后我将实现第二个类来处理新连接，因此代码的某些部分不完整/排列整齐，我希望这不会在您尝试理解它时打扰您。
这是我的问题：
服务器和客户端似乎都工作正常（我一直在检查我的监听、绑定、连接功能：没有错误）而且我显然能够与客户端发送数据但是当我尝试读取它时从服务器，我收到 WSA 错误 10038（这意味着我正在无效套接字上执行 recv()）。我已经查了几天了，似乎找不到我的错误。除了代码中的测试外，我还使用“netstat -an -p tcp”检查连接状态，一切正常，但服务器收不到数据。
注意：我使用的是 Visual Studio 6（是的，它很旧，但它是强制性的......）和 winsock，而不是 winsock2。
如果我忘记了什么就问吧，我会尽量做到完整，但忘记某些东西并非不可能。
这是我的源代码，我试图将其简化，但我担心错误可能几乎无处不在：
CmTcpTransport.cpp
/**
Initializes the TCP connection (socket) in CLIENT or SERVER mode.
It does not connect yet.
@param strIPAddress: IP Address to reach
nPort: Port to connect to
hSocket: client Socket if SERVER mode
nTcpMode: mode for this connexion SERVER(1) or CLIENT(2)
@return an int to get the exit point of the function
*/
int CmTcpTransport::initialize(std::string strIPAddress, unsigned int nPort, SOCKET hSocket, int nTcpMode)
m_nTcpMode = nTcpMode;
cout << "Creating TCP connexion..." << endl << endl;
if (nTcpMode == 1) // SERVER
serveraddr.sin_family = AF_INET; // address family Internet
serveraddr.sin_port = htons (nPort); // Port to connect on
serveraddr.sin_addr.s_addr = inet_addr (strIPAddress.c_str()); // Target IP
cout << "SERVER: Retrieving socket information..." << endl;
if (hSocket == INVALID_SOCKET)
return 102; // The received socket is invalid
cout << "SERVER: Socket creation failed" << endl;
serverSocket = hSocket;
cout << "SERVER: Listening socket received" << endl;
if (bind(serverSocket, (struct sockaddr *)&serveraddr, sizeof(serveraddr)) == SOCKET_ERROR)
return 103; // Couldn't bind
cout << "SERVER: Socket binding failed" << endl;
else
cout << "SERVER: Binding successful" << endl;
if (listen(serverSocket, 1) == SOCKET_ERROR)
return 103; // Couldn't listen
cout << "SERVER: Socket listening failed" << endl;
else
cout << "SERVER: Listening to socket" << endl;
else // CLIENT
serveraddr.sin_family = AF_INET; // address family Internet
serveraddr.sin_port = htons (nPort); // Port to connect on
serveraddr.sin_addr.s_addr = inet_addr (strIPAddress.c_str()); // Target IP
cout << "CLIENT: Creating client socket..." << endl;
clientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); // CREATE CLIENT SOCKET
if (clientSocket == INVALID_SOCKET)
return 104; // Couldn't create the socket
cout << "CLIENT: Socket creation failed" << endl;
cout << "CLIENT: Client socket created" << endl;
cout << "Initialization succeeded." << endl << endl << endl;
return 105;
/**
Creates the connexion to TCP
@param none
@return an int to get the exit point of the function
*/
int CmTcpTransport::connectTcp()
if (m_nTcpMode == 1) // SERVER
cout << "Waiting for connexion..." << endl;
int clientLen(0);
clientLen = sizeof(clientaddr);
if ((clientSocket = accept(serverSocket, (SOCKADDR *)&clientaddr, &clientLen) == INVALID_SOCKET))
cout << "SERVER: Connexion failed." << endl;
return 202;; // Couldn't listen
else
cout << "SERVER: Connexion established." << endl << endl << endl;
if (clientSocket == SOCKET_ERROR)
printf("socket became invalid after connexion:: %d\n", WSAGetLastError());
else
cout << "SOCKET STILL VALID AND WORKING AFTER CONNEXION" << endl;
return 201;
else // CLIENT
cout << "Connecting..." << endl;
if (connect(clientSocket, (SOCKADDR *)&serveraddr, sizeof(serveraddr)) == SOCKET_ERROR)
cout << "CLIENT: Connexion failed." << endl << endl << endl;
return 202;; // Couldn't connect
else
cout << "CLIENT: Connexion to server succeeded." << endl << endl << endl;
return 203;
/**
Receives a buffer of bytes from the TCP
@param buffer: buffer to store the data
bufLen: size of the buffer
@return nbChar: the result of the recv function
if no error occurs, recv returns the number of bytes received
else, it returns a value of SOCKET_ERROR
*/
int CmTcpTransport::recvTcp(char *buffer, int bufLen)
if (clientSocket == SOCKET_ERROR)
printf("socket became invalid before receive:: %d\n", WSAGetLastError());
else
cout << "SOCKET STILL VALID AND WORKING BEFORE RECEIVE" << endl;
int nbChar = recv(clientSocket, buffer, bufLen, 0);
if (nbChar == SOCKET_ERROR)
printf("recv failed: %d\n", WSAGetLastError());
cout << "No data received." << endl << endl << endl;
return nbChar;
else
buffer[nbChar]=0; // Gestion de la taille du buffer
cout << "Data received: " << buffer << endl << endl << endl;
return nbChar;
/**
Sends a buffer of bytes to the TCP
@param buffer: buffer containing the data
bufLen: size of the buffer
@return nbChar: the result of the send function
if no error occurs, recv returns the number of bytes sent
else, it returns a value of SOCKET_ERROR
*/
int CmTcpTransport::sendTcp(char *buffer, int bufLen)
int nbChar = send(clientSocket, buffer, bufLen,0);
if (nbChar == SOCKET_ERROR)
cout << "No data sent." << endl << endl << endl;
return nbChar;
else
cout << "Data sent: " << buffer << endl << endl << endl;
return nbChar;
服务器 main.cpp
int main(int argc, char* argv[])
// ----------------------- WINSOCK ----------------------------
cout << "Initializing winsock library..." << endl;
// Start up Winsock
WSADATA wsadata;
int error = WSAStartup(0x101, &wsadata);
// Error ?
if (error) 0;
// Try Winsock Version ?
if (wsadata.wVersion != 0x101)
WSACleanup(); // Clean up Winsock
return 101;
cout << "Initialization successful" << endl << endl << endl;
// ----------------------- SERVER ---------------------------
char buffer[3000];
int testRecv; // return of the recv function
cout << "SERVER" << endl << endl << endl;
// Simulate the activity of the TcpListener transfering a listening Socket for the client connexion
SOCKET testSocket;
testSocket = socket(AF_INET, SOCK_STREAM,IPPROTO_TCP);
// Creating a new TCP transport
CmTcpTransport server;
// Initialize and connect the TCP transport
server.initialize("127.0.0.1", 10000, testSocket, TTCP_MODE_SERVER);
server.connectTcp();
// Try to receive data
testRecv = server.recvTcp(buffer, sizeof(buffer));
cout << testRecv << endl;
// Disconnect
server.disconnectTcp();
return 0;
客户端 main.cpp
int main(int argc, char* argv[])
// ----------------------- WINSOCK ----------------------------
cout << "Initializing winsock library..." << endl;
// Start up Winsock
WSADATA wsadata;
int error = WSAStartup(0x0202, &wsadata);
// Error ?
if (error) 0;
// Try Winsock Version ?
if (wsadata.wVersion != 0x0202)
WSACleanup(); // Clean up Winsock
return 101;
cout << "Initialization successful" << endl << endl << endl;
// ----------------------- CLIENT ---------------------------
char buffer[10000];
cout << "CLIENT" << endl << endl << endl;
// this Socket won't be used as the TCP transport is in client mode
SOCKET test;
test = socket(AF_INET, SOCK_STREAM,IPPROTO_TCP);
// Create, initialize and connect the client TCP transport
CmTcpTransport client;
client.initialize("127.0.0.1", 10000, test, TTCP_MODE_CLIENT);
client.connectTcp();
// Copy the data in the buffer and send it
strcpy(buffer, "Test donnees");
client.sendTcp(buffer, sizeof(buffer));
client.disconnectTcp();
return 0;
以下是我同时运行两个电源时的控制台屏幕截图：
http://www.hostingpics.net/viewer.php?id=892752Consoles.jpg
感谢您的帮助，我意识到这需要阅读/处理很多内容，我感谢您的努力！
【问题讨论】：
这通常是调试器的用途，而不是关于 SO 的问题。 小编辑：我已经更正了这样一个事实，即我的“返回”在错误的情况下是在我的“cout 错误......”之前，这是我的代码的一个旧但工作版本。通过工作，我的意思是我在 recv() 上遇到错误 10038。 【参考方案1】：我认为您使用不正确的大括号使 accept 上的新 sock-id 无效：
if ((clientSocket = accept(serverSocket, (SOCKADDR *)&clientaddr, &clientLen) == INVALID_SOCKET))
尝试将其更改为：
if ((clientSocket = accept(serverSocket, (SOCKADDR *)&clientaddr, &clientLen)) == INVALID_SOCKET)
【讨论】：
谢谢！有效。我确信这很荒谬，我想这是一个很好的教训。 谢谢，Prabhu，我也遇到了同样的问题！以上是关于WSASocket()的定义的主要内容，如果未能解决你的问题，请参考以下文章