socket.cpp

socket编程,关于网络的实验 基于TCP

#include<stdlib.h> 
#include<stdio.h> 
#include<string.h>
//#include<winsock.h> 
#include<winsock2.h> 
#include<fstream.h>
#include <windows.h>
#include<process.h>
#pragma comment(lib,"ws2_32.lib") 
void fun(PVOID p)
{
	char a[500];
	char b[500];
	char *e;
	int i,j,brk(0);
	char x[100000];
	ifstream fin;
	SOCKET s;
	s=*(SOCKET *)p;
	recv(s,a,500,0);
	cout<<a<<endl;
	for(i=5,j=0;a[i]!=' ';i++,j++)
	{
		b[j]=a[i];
		if(b[j]=='/')
			b[j]='\\';
	}
	b[j]=0;
	cout<<endl<<b<<endl;
	fin.open(b,ios::binary);
	e="HTTP/1.1 200 Document Follows\r\n\r\n";
	send(s,e,strlen(e),0);
	while(1)
	{
		for(i=0;i<100000;i++)
		{
			if(fin.eof())
			{
				brk=1;
				break;
			}
			x[i]=fin.get();
		}
		send(s,x,i,0);
		if(brk)
			break;
	}
	fin.close();
	closesocket(s);
}
void main()
{
	WSADATA wsaData;
	SOCKET ListeningSocket;
	SOCKADDR_IN ServerAddr;
	SOCKADDR_IN ClientAddr;
	int ClientAddrLen;
	int Port=6789;
	WSAStartup(MAKEWORD(2,2),&wsaData);
	ListeningSocket=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
    ServerAddr.sin_family=AF_INET;
	ServerAddr.sin_port=htons(Port);
	ServerAddr.sin_addr.s_addr=htonl(INADDR_ANY);
	bind(ListeningSocket,(SOCKADDR *)&ServerAddr,sizeof(ServerAddr));
	while(1)
	{
		listen(ListeningSocket,5);
		ClientAddrLen=sizeof(ClientAddr);
		SOCKET NewConnection;
		NewConnection=accept(ListeningSocket,(SOCKADDR *)&ClientAddr,&ClientAddrLen);
		_beginthread(fun,0,&NewConnection);
	}
	closesocket(ListeningSocket);
	WSACleanup();
}