平套接字编程练习

1 实验1： 第1、2节课 学号105032012073班级 12级计本8班提示：TCP1Socket2、客户机向服务器发送信息（如字符串“o”）4应用程序类型建议采用WIN32控制台应用程序，能向用户显示服务的实时 VC++//ModuleName:// ThissampleillustrateshowtodevelopasimpleTCPserver thatlistensforaTCPconnectiononport5150andreceivesdata. sampleisimplementedasaconsole-styleapplicationandsimply statusmessageswhenaconnectionisacceptedandwhendatais bythe// cl-otcpservertcpserver.cpp//CommandLine NOTE:Therearenocommand#include<winsock2.h>#include<stdio.h>#pragmavoid{ Port= //InitializeWinsockversionif((Ret=WSAStartup(MAKEWORD(2,2),&wsaData))!={//NOTE:SinceWinsockfailedtoloadwecannotuse//todeterminetheerrorcodeasisnormallydonewhena//APIfails.Wehavetoreportthereturnstatusoftheprintf("WSAStartupfailedwitherror%d\n",Ret);}//Createanewsockettolisteningforif((ListeningSocket=socket(AF_INET,SOCK_STREAM,=={printf("socketfailedwitherror%d\n",WSAGetLastError());}//SetupaSOCKADDR_INstructurethatwilllbindthat//wanttolistenforconnectionsonallinterfacesusing//5150.NoticehowweconvertthePortvariablefromhost//ordertonetworkbyteServerAddr.sin_family=AF_INET;ServerAddr.sin_port=htons(Port);ServerAddr.sin_addr.s_addr=htonl(INADDR_ANY);//Associatetheaddressinformationwiththesocketusingbind.if(bind(ListeningSocket,(SOCKADDR*)&ServerAddr,=={printf("bindfailedwitherror%d\n",WSAGetLastError());}//Listenforconnections.Weusedabacklogof5which//normalformanyif(listen(ListeningSocket,5)=={printf("listenfailedwitherror%d\n",WSAGetLastError());}printf("Weareawaitingaconnectiononport%d.\n",Port);AddrLen=sizeof(SOCKADDR);//Acceptanewconnectionwhenoneif((NewConnection=accept(ListeningSocket,(SOCKADDR*) &AddrLen))=={printf("acceptfailedwitherror%d\n",WSAGetLastError());}printf("Wesuccessfullygotaconnectionfrom%s:%d.\n",ntohs(//Atthispointyoucandotwothingswiththesesockets.//formoreconnectionsbycallingacceptagainon//andstartsendingorreceivingdataonNewConnection.//simplicityWewillstoplisteningformoreconnectionsby//ListeningSocket.Wewillstartsendingandreceivingdata//NewConnection.//StartsendingandreceivingdataonNewConnection.For//wewilljustreceivesomedataandreporthowmanybytes//printf("Wearewaitingtoreceiveif((Ret=recv(NewConnection,DataBuffer,sizeof(DataBuffer),=={printf("recvfailedwitherror%d\n",WSAGetLastError());}printf("Wesuccessfullyreceived%dbyte(s).\n",Ret);printf("data:%s\n",DataBuffer);//Forthisapplicationwedonotntodoanythingelsewith//connectionsowewilljustclosetheconnection.printf("Wearenowgoingtoclosetheconnection.\n");//Whenyourapplicationisfinishedhandlingthe//call}//ModuleName:tcp// ThissampleillustrateshowtodevelopasimpleTCP thatcansendasimple"o"messagetoaTCPserverlisteningonport5150. Thissampleisimplementedasaconsole-styleapplicationandsimplyprints statusmessagesaconnectionismadeandwhendataissenttothe// cl-otcptcp.cpp//CommandLine tcp.exe<serverIP#include<winsock2.h>#include<stdio.h>#pragmavoidmain(intargc,char{ Port= if(argc<={printf("USAGE:tcp<ServerIPaddress>.\n");}//InitializeWinsockversionif((Ret=WSAStartup(MAKEWORD(2,2),&wsaData))!={//NOTE:SinceWinsockfailedtoloadwecannotuse//todeterminetheerrorcodeasisnormallydonewhena//APIfails.Wehavetoreportthereturnstatusoftheprintf("WSAStartupfailedwitherror%d\n",Ret);}//Createanewsockettomakeaif((s=socket(AF_INET,SOCK_STREAM,=={printf("socketfailedwitherror%d\n",WSAGetLastError());}//SetupaSOCKADDR_INstructurethatwillbeusedto//toalisteningserveronport5150.For//purposes,werequiredtheusertosupplyanIP//onthecommandlineandwefilledthisfieldinwith//datafromtheServerAddr.sin_family=AF_INET;ServerAddr.sin_port=htons(Port);ServerAddr.sin_addr.s_addr=inet_addr(argv[1]);//Makeaconnectiontotheserverwithsockets.printf("Wearetryingtoconnectto%s:%d...\n",if(connect(s,(SOCKADDR*)&ServerAddr,=={printf("connectfailedwitherror%d\n",WSAGetLastError());}printf("Ourconnection//Atthispointyoucanstartsendingorreceivingdata//thesockets.Wewilljustsendaomessagetotheserver.printf("Wewillnowtrytosendaomessage.\n");if((Ret=send(s,"o",5,0))=={printf("sendfailedwitherror%d\n",WSAGetLastError());}printf("Wesuccessfullysent%dbyte(s).\n",//Whenyouarefinishedsendingandreceivingdataonsocket//youshouldclosetheprintf("Weareclosingtheconnection.\n");//Whenyourapplicationisfinishedhandlingtheconnection,//}#include<winsock2.h>#include<stdio.h>#pragmavoid{ Port= //InitializeWinsockversionif((Ret=WSAStartup(MAKEWORD(2,2),&wsaData))!={//NOTE:SinceWinsockfailedtoloadwecannotuse//todeterminetheerrorcodeasisnormallydonewhena//APIfails.Wehavetoreportthereturnstatusoftheprintf("WSAStartupfailedwitherror%d\n",Ret);}//Createanewif((s=socket(AF_INET,SOCK_DGRAM,=={printf("socketfailedwitherror%d\n",WSAGetLastError());}//SetupaSOCKADDR_INstructurethatwilllbindthat//wanttolistenforconnectionsonallinterfacesusing//5150.NoticehowweconvertthePortvariablefromhost//ordertonetworkbyteServerAddr.sin_family=AF_INET;ServerAddr.sin_port=htons(Port);ServerAddr.sin_addr.s_addr=htonl(INADDR_ANY);//Associatetheaddressinformationwiththesocketusingbind.if(bind(s,(SOCKADDR*)&ServerAddr,sizeof(ServerAddr))=={printf("bindfailedwitherror%d\n",WSAGetLastError());}AddrLen=//Startsendingandreceivingprintf("Wearewaitingtoreceiveif((Ret=recvfrom(s,DataBuffer,sizeof(DataBuffer),0,*)&Addr,&=={printf("recvfailedwitherror%d\n",WSAGetLastError());}printf("Wesuccessfullyreceived%dbyte(s).\n",Ret);printf("data:%s\n",DataBuffer);//Forthisapplicationwedonotntodoanythingelsewith//connectionsowewilljustclosetheconnection.printf("Wearenowgoingtoclosetheconnection.\n");//Whenyourapplicationisfinishedhandlingthe//call}#include<winsock2.h>#include<stdio.h>#pragmavoidmain(intargc,char{ Port= if(argc<={printf("USAGE:tcp<ServerIPaddress>.\n");}//InitializeWinsockversionif((Ret=WSAStartup(MAKEWORD(2,2),&wsaData))!={//NOTE:SinceWinsockfailedtoloadwecannotuse//todeterminetheerrorcodeasisnormallydonewhena//APIfails.Wehavetoreportthereturnstatusoftheprintf("WSAStartupfailedwitherror%d\n",Ret);}//Createanewif((s=socket(AF_INET,SOCK_DGRAM,=={printf("socketfailedwitherror%d\n",WSAGetLastError());}//SetupaSOCKADDR_INstructurethatwillbeusedto//toalisteningserveronport5150.For//purposes,werequiredtheusertosupply