C++ 的多线程tcp的一个小问题，求解答

[「已注销」]

// client test.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <WinSock2.h>
#include <iostream>
#pragma comment(lib,"ws2_32.lib")
using namespace std;

#define PORT 4000
#define IP_ADDRESS "127.0.0.1"


typedef struct info
{
	SOCKET t_serverSocket;
	sockaddr_in t_serverAddr;
}Info;

DWORD WINAPI ServerThread(LPVOID lpPara)
{
	Info* t_info = (Info*)lpPara;
	int ret = 0;
	char RecvBufferData[MAX_PATH];
	char RecvBufWho[MAX_PATH];
	while (TRUE)
	{
		
		memset(RecvBufferData,0x00,sizeof(RecvBufferData));
		ret = recv(t_info->t_serverSocket,RecvBufferData,MAX_PATH,0);

		if(ret != 0 && ret != -1)
		{
			if (ret == 0 || ret == SOCKET_ERROR)
			{
				printf("%d",ret);
				cout<<"failed,exit"<<endl;
				break;
			}

			for (unsigned int i = 0;i < strlen(RecvBufferData);++i)
			{
				RecvBufferData[i] = toupper(RecvBufferData[i]);
			}
		
		
			memset(RecvBufWho,0x00,sizeof(RecvBufWho));
			sprintf_s(RecvBufWho,"%s.%d",inet_ntoa(t_info->t_serverAddr.sin_addr),t_info->t_serverAddr.sin_port);
			cout<<"接收到来自"<<RecvBufWho<<"的消息为\n"<<RecvBufferData<< endl;
			Sleep(1000);
			}

	return 0;
}


int _tmain(int argc, _TCHAR* argv[])
{
	WSADATA WSA;
	SOCKET clientSocket,serverSocket;
	struct sockaddr_in serverAddr;
	int AddrLen = 0;
	HANDLE hThread = NULL;
	int ret = 0;
	char SendBuffer[MAX_PATH];

	if (WSAStartup(MAKEWORD(2,2),&WSA) != 0)
	{
		cout<<"init failed"<<endl;
		return -1;
	}
	clientSocket = socket(AF_INET,SOCK_STREAM,0);
	if (clientSocket == INVALID_SOCKET)
	{
		cout<<"create failed"<<endl;
		return -1;
	}

	serverAddr.sin_family = AF_INET;
	serverAddr.sin_addr.S_un.S_addr = inet_addr(IP_ADDRESS);
	serverAddr.sin_port = htons(PORT);
	memset(serverAddr.sin_zero,0x00,8);
	AddrLen = sizeof(serverAddr);
	ret = connect(clientSocket,(struct sockaddr*)&serverAddr,AddrLen);
	
	if (ret != 0)
	{
		cout<<"connect failed";
		return -1;
	}
	
	
	serverSocket = accept(clientSocket,(struct sockaddr*)&serverAddr,&AddrLen);
	cout<<"链接成功"<<endl;

	
	
	Info t_info;
	t_info.t_serverSocket = serverSocket;
	t_info.t_serverAddr = serverAddr;
	hThread = CreateThread(NULL,0,ServerThread,(LPVOID)&t_info,0,NULL);
	if (hThread == NULL)
	{
		cout<<"create thread failed"<<endl;
	}
	CloseHandle(hThread);

	while (TRUE)
	{
		
		cin.getline(SendBuffer,sizeof(SendBuffer));
		ret = send(clientSocket,SendBuffer,(int)strlen(SendBuffer),0);

		if (ret == SOCKET_ERROR)
		{
			cout<<"send to error"<<endl;
			break;
		}
		
	}
	

	closesocket(clientSocket);
	closesocket(serverSocket);
	WSACleanup();
	return 0;
}

DWORD WINAPI ServerThread(LPVOID lpPara)函数里面的RecvBufferData参数一直传不进来，是怎么回事？

[「已注销」]

这个是客户端，很奇怪为什么不可以运行，服务器的收包代码和这个一样的，就可以收到。 还有一个很奇怪的地方，服务器的send函数和客户端里send函数中第一个参数一定是clientSocket才可以运行。客户端我本来以为改成serverSocket就可以了，但是不行，会出错。

		while(TRUE)
		{
			
			cin.getline(SendBuffer,sizeof(SendBuffer));
			ret = send(clientSocket,SendBuffer,(int)strlen(SendBuffer),0);
							printf("%s\n",SendBuffer);


			if (ret == SOCKET_ERROR)
			{
				cout<<"send to error"<<endl;
				break;
			}
		}

[战在春秋]

引用

但是不行，会出错

socket编程 server/client 两方的工作过程有固定的流程。 1 create a socket - Get the file descriptor! 2 bind to an address -What port am I on? 3 listen on a port, and wait for a connection to be established. 4 accept the connection from a client. 5 send/recv - the same way we read and write for a file. 6 shutdown to end read/write. 7 close to releases data. 题目中代码并没有遵循该流程。建议找一个范例对照检查一下代码逻辑

[战在春秋]

之前列出的是Server端流程。 Client端如下： 1 create a socket. 2 bind* - this is probably be unnecessary because you're the client, not the server. 3 connect to a server. 4 send/recv - repeat until we have or receive data 5 shutdown to end read/write. 6 close to releases data.

[「已注销」]

可以稍微具体一点吗，我之前对过，没发现错误，而且现在我时间比较紧，谢谢

[赵4老师]

不知道有多少前人掉在TCP Socket send(人多)send(病少)send(财富) recv(人多病)recv(少财富) 陷阱里面啊！ http://bbs.csdn.net/topics/380167545

[小乌龟在大乌龟背上]

表示没看懂题主提出的问题~