TCP大文件传输

最新推荐文章于 2024-02-13 15:09:57 发布

原创最新推荐文章于 2024-02-13 15:09:57 发布 · 574 阅读

0 ·

CC 4.0 BY-SA版权

个人日记专栏收录该内容

1 篇文章

订阅专栏

本文深入探讨了如何利用TCP协议进行大文件传输，分析了TCP在传输过程中的特性，如滑动窗口、拥塞控制等，以及如何优化传输效率，确保数据的完整性和可靠性。同时，介绍了客户端和服务端的实现策略和技术细节，包括分块传输、断点续传等实用技巧。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

服务端

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


#include "iegadNet.h"
#include <iostream>
#include <fstream>


int main()
{
	Socket::InitSockVersion();
	EndPoint currentEP;
	currentEP.SetIpAddress(Socket::GetLocalIpAddress());
	std::cout<<currentEP.GetIpAddress()<<std::endl;
	TcpClient tcpClnt;
	int rzt = tcpClnt.Connect("192.168.1.108", 7777);
	if (!rzt)
	{
		std::cout<<"连接成功"<<std::endl;
	}
	else
	{
		std::cout<<"连接失败"<<std::endl;
	}

	std::ofstream fout;
	fout.open("C:\\Users\\Administrator\\Desktop\\1.iso", std::ios_base::app | std::ios_base::binary);
	std::cout<<"开始接收...\n";
	while (1)
	{
		int recvLen;
		rzt = tcpClnt.Recv((char *)&recvLen, 4);
		if (rzt != 4)
		{
			std::cout<<"error 1\n";
			break;
		}
		if (recvLen == -1)
		{
			break;
		}
		char * recvBuffer = new char[recvLen];
		rzt = tcpClnt.Recv(recvBuffer, recvLen);
		if (rzt != recvLen)
		{
			std::cout<<"error 2\n";
			delete[] recvBuffer;
			break;
		}
		std::cout<<recvLen<<std::endl;
		fout.write(recvBuffer, recvLen);
		delete[] recvBuffer;
	}
	fout.close();
	std::cout<<" 完成"<<std::endl;
	std::cin.get();
	Socket::ReleaseSockVersion();
	return 0;
}

客户端

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


#include "iegadNet.h"
#include <iostream>
#include <fstream>


int main()
{
	Socket::InitSockVersion();
	EndPoint currentEP;
	currentEP.SetIpAddress(Socket::GetLocalIpAddress());
	currentEP.SetPort(7777);
	std::cout<<currentEP.GetIpAddress()<<std::endl;
	TcpServer tcpSvr(currentEP);
	int rzt = tcpSvr.Bind();
	if (!rzt)
	{
		std::cout<<"连接成功"<<std::endl;
	}
	rzt = tcpSvr.Listen(16);
	if (!rzt)
	{
		std::cout<<"打开监听"<<std::endl;
	}
	EndPoint clntEP;
	TcpClient clnt = tcpSvr.Accept(clntEP);
	clnt.SetNetEnvironment(clntEP);
	std::cout<<clnt.GetIpAddress()<<std::endl;
	std::ifstream fin;
	fin.open("E:\\iegadTools\\GRMSDK_EN_DVD.iso", std::ios_base::binary | std::ios_base::in);
	fin.seekg(0, std::ios_base::end);
	int fSize = fin.tellg();
	int tempSize = fSize;
	fin.seekg(0, std::ios_base::beg);
	int sendLen = 1024 * 1024;
	std::cout<<"开始发送\n";
	int ttLen = 0;
	while (tempSize)
	{
		char * sendBuffer = new char[sendLen];
		fin.read(sendBuffer, sendLen);
		rzt = clnt.Send((char *)&sendLen, 4);
		if (rzt != 4)
		{
			delete[] sendBuffer;
			break;
		}
		rzt = clnt.Send(sendBuffer, sendLen);
		if (rzt != sendLen)
		{
			delete[] sendBuffer;
			break;
		}
		std::cout<<sendLen<<std::endl;
		tempSize -= rzt;
		ttLen += rzt;
		if (tempSize < sendLen)
		{
			sendLen = tempSize;
		}
		delete[] sendBuffer;
	}
	fin.close();
	rzt = -1;
	clnt.Send((char *)&rzt, 4);
	std::cout<<"完成"<<std::endl;
	std::cin.get();
	Socket::ReleaseSockVersion();
	return 0;
}