天津理工大学计算机网络实验二

{
cout << "错误发生：”
<<msg
<<e ndl;
}
intmai n()
{
SOCKET c;
SOCKADDR_IN server_addr;
WSADATAwsd;
stri ngmsg;
stri ngremote_ip;
cout <<"输入对方IP地址："；
cin>> remote_ip;
if(WSAStartup(MAKEWORD(2,2),&wsd)!=0)
cout <<data <<e ndl;
}
}
}while(ReciveBytes> 0);
FD_CLR (c,&fdread);
closesocket(c);
return 0;
}
intmai n()
{
SOCKET server;
SOCKET clie nt;
SOCKADDR_IN ser_addr,cli_addr;
<<data <<e ndl;
}while(ReciveBytes> 0);
}
}
}//while接收数据
if(Hn d==NULL)
{
CloseHa ndle(H nd); closesocket(clie nt);
}
}
closesocket(server);
WSAClea nup();
return 0;
OutErr(stri ng( "se nd "));
break;
}
}while(1);
closesocket(c);
WSAClea nup();
return 0;
}
测试结果：
心得体会：
通过这次的实验，巩固了我以前基础的
用一些
个类本身使用直接代码通过主机操作系统的本地
{
OutErr(stri ng( "co nn ect "));
return 1;
}
do
{
int Se ntBytes;
cin>> msg;
if(msg== "exit ")break;
if((Se ntBytes=se nd(c,msg.c_str(),msg.size(),0))==SOCKET_ERROR) {
break;
}
if(ret> 0)
{
if(FD_ISSET(c, &fdread))
{
ReciveBytes=recv(c,data,10,0); if(ReciveBytes==SOCKET_ERROR) {
break;
}
cout << "收到字节数：”
<<ReciveBytes
<<e ndl;
data[ReciveBytes]= '\0 ';
{
do//
{
ReciveBytes=recv(clie nt,data,10,0);
if(ReciveBytes==SOCKET_ERROR)
{
//SOCKET错误break;
}
data[ReciveBytes]=O;〃加上结束符
cout << "收到”
<<ReciveBytes
<<"个字节:\n "
{
OutErr(stri ng( "ioctlsocket "));
return 1;
}
FD ZERO(&fdread);〃清空集合
FD_SET(client,&fdread);//将C加入到读取集合中
〃Hn d=CreateThread(NULL,0,ThreadProc,(LPVOID)clie nt,O, &dwThreadlD);
if((server=socket(AF」N ET,SOCK_STREAM,IPPROTO_IP))==INVALID_SOCKET)
{
OutErr(stri ng( "WSASocket "));
return 1;
}
if(bi nd(server,(SOCKADDR*)&ser_addr,sizeof(SOCKADDR))!=0)
char data[80];
UINT ReciveBytes=O;
FD_ZERO(&fdread);
FD_SET(c, &fdread);
do
{
if((ret=select(0, &fdread,NULL,NULL,NULL))==SOCKET_ERROR) {
OutErr(stri ng( "select "));
人和以吟
学院（系）名称： 计算机与通信工程学院
姓名
学号
专业
计算机科学与技术
班级
实验名称
实验二：基于TCP/UDP的Socket编程
课程名称
计算机网络
课程代码
实验时间
实验地点
7#219
批改意见
成绩
教师签字：
1.实验目的
了解套接字（socket）实现原理。通过编成理解TCP、UDP原理，加深对传输层的功能理解。
usingn amespacestd;
void OutErr(stri ng msg)
{ cout << "错误！发生在"<<msg <<e ndl; }
fd_set fdread;
int ret;
DWORD WINAPI ThreadProc(LPVOID lpParameter)
{
SOCKET c=(SOCKET)lpParameter;
源程序：
（1）服务端：
//server.cpp
#i nclude<win sock2.h>
#i nclude<io.h>
#i nclude<win dows.h>
#i nclude<iostream>
#in elude<stri ng>
#pragmacomme nt(lib, "WS2_32.lib ")
cout << "客户IP:" <<inet_ntoa(cli_addr.sin_addr)
<< "，端口:"<<ntohs(cli_addr.sin_port) <<endl;
ULONG ul=1;
if(ioctlsocket(clie nt,FIONBIO,&ul)==SOCKET_ERROR)
WSADATA wdata;
intcliaddrLe n=0;
UINT port=4000;
HANDLEHnd;
DWORDdwThreadID;
if(WSAStartup(MAKEWORD(2,0),&wdata)!=0)
{
OutErr(stri ng( "WSAStartup "));
return 1;
{
OutErr(stri ng( "bi nd "));
return 1;
}
if(liste n(server,5)!=0)
{
OutErr(stri ng( "listen "));
return 1;
}
while(1)
{
cliaddrLe n=sizeof(SOCKADDR);
clie nt=accept(server,(SOCKADDR*)&cli_addr,&cliaddrLe n);
{
OutErr(stri ng( "WSAStartup "));
return 1;
}
if((c=WSASocket(AF」N ET,SOCK_STREAM,IPPROTO_IP,NULL,0,1))==INVALID_SOCKET)
{
OutErr(stri ng( "WSASocket "));
return 1;
〃接收数据
while(TRUE)
{
char data[11];
int ReciveBytes;
//
if((ret=select(0, &fdread,NULL,NULL,NULL))==SOCKET_ERROR)
{
//
break;
}
if(ret>0)
{
if(FD_ISSET(client,&fdread))//c中是否属于fdread集合
}
客户端：
//clie nt.cpp
#i nclude<iostream>
#i nclude<win sock2.h>
#in clude<stri ng>
#pragmacomment(lib, "ws2_32.lib ")
usingn amespacestd;
void OutErr(stri ng msg)
}
server_addr.s in _addr.S_ un. S_addr =in et_addr(remote_ip.c_str());