TCP / IP简单问题

本文介绍了TCP / IP简单问题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我使用的是简单的TCP / IP应用程序，包括2个部分：

服务器：

Hi,
I am using simple TCP/IP applications that is include 2 parts:
Server:

#pragma comment(lib, "Ws2_32.lib")

#include <WinSock2.h>
#include <Windows.h>
#include <iostream>

using namespace std;

// Ok at first I am going to do some WinSock standard stuff
// If you don`t understand it watch my other tutorials

SOCKADDR_IN addr;

SOCKET sListen;
SOCKET sConnect;
SOCKET* Connections;

int addrlen = sizeof(addr);
int ConCounter = 0;

struct Buffer
{
	int ID;
	char Message[256];
};

int ServerThread(int ID)
{
	Buffer sbuffer;

	char* Recv = new char[256];
	ZeroMemory(Recv, 256);

	// In Send we will copy the content of the struct
	// and after this we will send "Send" to the client
	char* Send = new char[sizeof(Buffer)];
	ZeroMemory(Send, sizeof(Buffer));

	for(;; Sleep(10))
	{
		// Same here!
		if(recv(Connections[ID], Recv, 256, NULL))
		{
			sbuffer.ID = ID;
			memcpy(sbuffer.Message, Recv, 256);
			memcpy(Send, &sbuffer, sizeof(Buffer));

			for(int a = 0; a != ConCounter; a++)
			{
				if(Connections[a] == Connections[ID])
				{

				}
				else
				{
					send(Connections[a], Send, sizeof(Buffer), NULL);
				}
			}
			ZeroMemory(Recv, 256);
		}
	}

	return 0;
}

int InitWinSock()
{
	int RetVal = 0;
	WSAData wsaData;
	WORD DllVersion = MAKEWORD(2,1);
	RetVal = WSAStartup(DllVersion, &wsaData);

	return RetVal;
}

int main()
{
	int RetVal = 0;
	RetVal = InitWinSock();
	if(RetVal != 0)
	{
		MessageBoxA(NULL, "Winsock startup failed", "Error", MB_OK | MB_ICONERROR);
		exit(1);
	}

	Connections = (SOCKET*)calloc(64, sizeof(SOCKET));

	sListen = socket(AF_INET, SOCK_STREAM, NULL);
	sConnect = socket(AF_INET, SOCK_STREAM, NULL);

	addr.sin_addr.s_addr = inet_addr("66.96.201.81");
	addr.sin_port        = htons(1234);
	addr.sin_family      = AF_INET;

	bind(sListen, (SOCKADDR*)&addr, sizeof(addr));

	listen(sListen, 64);

	for(;; Sleep(50))
	{
		if(sConnect = accept(sListen, (SOCKADDR*)&addr, &addrlen))
		{
			Connections[ConCounter] = sConnect;

			char* ID = new char[64];
			ZeroMemory(ID, sizeof(ID));

			itoa(ConCounter, ID, 10);
			send(Connections[ConCounter], ID, sizeof(ID), NULL);

			ConCounter = ConCounter + 1;
			CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE) ServerThread, (LPVOID)(ConCounter - 1), NULL, NULL);
		}
	}

	return 0;
}

和客户：

And Clients:

#pragma comment(lib, "Ws2_32.lib")

#include <WinSock2.h>
#include <Windows.h>
#include <iostream>

using namespace std;


SOCKADDR_IN addr;

SOCKET sConnect;

// For this we need to send two information at one time:
// 1. The main message
// 2. The ID

// To send more than one information I will use a struct
struct Buffer
{
	int ID;
	char Message[256];
};

int ClientThread()
{
	Buffer sbuffer;

	char buffer[sizeof(sbuffer)] = {0};

	for(;; Sleep(10))
	{
		// The server will send a struct to the client
		// containing message and ID
		// But send only accepts a char as buffer parameter
		// so here we need to recv a char buffer and then
		// we copy the content of this buffer to our struct
		if(recv(sConnect, buffer, sizeof(sbuffer), NULL))
		{
			memcpy(&sbuffer, buffer, sizeof(sbuffer));
			cout << "<Client " << sbuffer.ID << ":> " << sbuffer.Message <<endl;
		}
	}

	return 0;
}

int main()
{
	system("cls");

	int RetVal = 0;

	WSAData wsaData;
	WORD DllVersion = MAKEWORD(2,1);
	RetVal = WSAStartup(DllVersion, &wsaData);
	if(RetVal != 0)
	{
		MessageBoxA(NULL, "Winsock startup failed", "Error", MB_OK | MB_ICONERROR);
		exit(1);
	}

	sConnect = socket(AF_INET, SOCK_STREAM, NULL);

	addr.sin_addr.s_addr = inet_addr("66.96.201.81");
	addr.sin_port        = htons(1234);
	addr.sin_family      = AF_INET;

	cout << "Connect to Masterserver? [ENTER]" <<endl;
	getchar();
	RetVal = connect(sConnect, (SOCKADDR*)&addr, sizeof(addr));

	if(RetVal != 0)
	{
		MessageBoxA(NULL, "Could not connect to server", "Error", MB_OK | MB_ICONERROR);
		main();
	}
	else
	{
		int ID;
		char* cID = new char[64];
		ZeroMemory(cID, 64);

		recv(sConnect, cID, 64, NULL);
		ID = atoi(cID);

		cout << "Connected" <<endl;
		cout << "You are Client No: " << ID <<endl;

        CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE) ClientThread, NULL, NULL, NULL);

		for(;; Sleep(10))
		{
			char* buffer = new char[256];
			ZeroMemory(buffer, 256);

			cin >> buffer;
			getchar();

			send(sConnect, buffer, 256, NULL);
		}
	}

	return 0;
}

应用程序运行良好。我这里只有一个问题。

例如在client1中我写你好吗？然后按下回车键，在client2中，它会写出完全你好吗？并在一行中解析它，并按字母逐字逐句写入：

如何

是

你

？

如何解决这个问题？

问候，

Applications work good. I have only one problem here.
When in client1 for example I write "How are you?" and press enter, in client2 instead it write exactly ""How are you?" and in one line, it parsing that and write in more lines word to word as below:
How
are
you
?
How I can fix this?
Regards,

client1

TCP / IP简单问题

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