服務(wù)器回射程序設(shè)計(jì)分析解析

1、網(wǎng)絡(luò)編程技術(shù)實(shí)驗(yàn)報(bào)告實(shí)驗(yàn)名稱實(shí)驗(yàn)四基于數(shù)據(jù)報(bào)套接字的回射程序設(shè)計(jì)與實(shí)驗(yàn)隊(duì)另U姓名學(xué)號實(shí)驗(yàn)日期2015.12.9實(shí)驗(yàn)報(bào)告要求：1.實(shí)驗(yàn)?zāi)康?.實(shí)驗(yàn)要求3.實(shí)驗(yàn)環(huán)境 4.實(shí)驗(yàn)作業(yè)5.問題及解決6.思考問題7.實(shí)驗(yàn)體會【實(shí)驗(yàn)?zāi)康摹?. 鞏固套接字編程2. 熟悉流式套接字編程【實(shí)驗(yàn)要求】使用流式套接字編程實(shí)現(xiàn)回射程序，具體包括：1. 客戶端：主動(dòng)請求建立連接，接收界面輸入字符串，發(fā)送數(shù)據(jù)給服務(wù)器，接收服務(wù)器返回的應(yīng)答， 輸出顯示。2. 服務(wù)器：在指定端口上提供服務(wù)，接收客戶端的發(fā)送的回射請求字符串，將接收到的內(nèi)容回射給客戶端，輸出顯示。3. 提煉出網(wǎng)絡(luò)操作的基本功能，構(gòu)造網(wǎng)絡(luò)操作類，修改原有程序【實(shí)驗(yàn)

2、環(huán)境】DEV C+【實(shí)驗(yàn)作業(yè)】網(wǎng)絡(luò)操作類設(shè)計(jì)：class CSocketFrameLpublic:int start_up();int clea n_ up();int set_address(char *hn ame,char *sn ame,struct sockaddr_ in *sap,char *protocol);int quit(SOCKET s);SOCKET tcp_server(ULONG ulP,USHORT uPort);SOCKET tcp_server(char *hn ame,char *sn ame);SOCKET tcp_clie nt(char *hn am

3、e,char *sn ame);SOCKET tcp_clie nt(ULONG uIP,USHORT uPort);nt CSocketFrame:start_up(void)LWORD wVersio nRequested;WSADATA wsaData;int iResult;wVersio nRequested=MAKEWORD(2,2);iResult=WSAStartup(wVersio nRequested,&wsaData);if(iResult!=O)prin tf(WSAStartup調(diào)用錯(cuò)誤，錯(cuò)誤號：dn,WSAGetLastError();return -1;/*if(

4、LOBYTE(wsaData.wVersio n!=2|HIBYTE(wsaData.wVersio n)!=2) prin tf(無法找到可用的 WSD版本n);WSACIea nup();return -1;告訴用戶無法找到可用的WSDelseprin tf(WS2.2初始化成功！ n); */return 0;nt CSocketFrame:clea n_up(void)Lint iResuIt;iResuIt=WSACIea nup();if(iResult=SOCKET_ERROR)/WSACIeanup()調(diào)用失敗prin tf(WSACIea nup調(diào)用錯(cuò)誤，錯(cuò)誤號：dn,WSA

5、GetLastError();return -1;eIseprin tf(Wi nsocket dII釋放成功！ n);return 0;*protocol)nt CSocketFrame:set_address(char *hname,char *sname,structsockaddr_in *sap,charLstruct serve nt *sp;struct hoste nt *hp;char *en dptr;un sig ned short port;un sig ned long ulAddr=INADDR_NONE;/將地址結(jié)構(gòu)socketsddr_in初始化為0,并將地址族

6、設(shè)為 AF_INETmemset(sap,0,sizeof(*sap);sap-s in _famiIy=AF_INET;if(h name!=NULL)/如果hname不為空，轉(zhuǎn)化地址格式ulAddr =in et_addr(h name); if(ulAddr=INADDR_NONE|ulAddr=INADDR_ANY)/調(diào)用錯(cuò)誤，調(diào)用 gethostbyname獲得主機(jī)地址hp=gethostb yn ame(h name);if(hp=NULL)printf(未知的主機(jī)名，錯(cuò)誤號：dn,WSAGetLastError();return -1;sap-s in _addr=*(struc

7、t in _addr *)hp-h_addr;elsesap-s in _addr.S_ un. S_addr=ulAddr;else/如果調(diào)用者沒有指明一個(gè)主機(jī)名或地址，則設(shè)為通配地址sap-sin_addr.s_addr=hto nl(INADDR_ANY);/嘗試轉(zhuǎn)換sname為一個(gè)整數(shù)port=(un sig ned short)strtol(s name，&en dptr,0);if(*e ndptr=0)/如果成功轉(zhuǎn)化為網(wǎng)絡(luò)字節(jié)序sap-s in _port=ht on s(port);else/如果失敗，則假定是一個(gè)服務(wù)名稱，通過getservbyname()函數(shù)獲得端口號sp=

8、getservb yn ame(s name,protocol);if(sp=NULL)printf(未知服務(wù)，錯(cuò)誤號：%dn,WSAGetLastError();return -1;sap-si n_port=sp_s_port;return 0;nt CSocketFrame:quit(SOCKET s)Lint iResult=0;iResult=closesocket(s);if(iResult=SOCKET_ERROR)prin tf(closesocket調(diào)用錯(cuò)誤，錯(cuò)誤號：dn,WSAGetLastError();return -1;iResult=clea n_up();retu

9、r n iResult;SOCKET CSocketFrame:tcp_server(char *hn ame,char *sn ame)LSOCKET Liste nSocket;int iResult=0;sockaddr_i n local;const int on=1;/為服務(wù)器的本機(jī)地址設(shè)置用戶輸入的地址以及端口號if(set_address(h names name，&I ocal,(char*)tcp)!=0)return -1;/創(chuàng)建套接字Liste nSocket=socket(AF_INET,SOCK_STREAM,0);if(Liste nSocket=INVALID_S

10、OCKET)prin tf(socket函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號：%dn, WSAGetLastError();WSAClea nup();return -1;/綁定服務(wù)器地址iResult=b in d(Liste nSocket,(struct sockaddr *) & local,sizeof(local);if(iResult=-1)prin tf(bi nd函數(shù)調(diào)用錯(cuò)誤！錯(cuò)誤號：%dn,WSAGetLastError();closesocket(Liste nSocket);WSAClea nup();return -1;/設(shè)置函數(shù)為監(jiān)聽狀態(tài)，監(jiān)聽隊(duì)列長度為NLISTENiResult

11、=liste n(Liste nSocket,SOMAXCONN);if(iResult=SOCKET_ERROR)prin tf(Listen函數(shù)調(diào)用錯(cuò)誤！錯(cuò)誤號：%dn, WSAGetLastError();quit(Liste nSocket);return -1;retur n Liste nSocket;SOCKET CSocketFrame:tcp_server(ULONG ulP,USHORT uPort)SOCKET Liste nSocket=INVALID_SOCKET;int iResult=0;sockaddr_i n local;const int on=1;/為服務(wù)

12、器的本機(jī)地址設(shè)置用戶輸入的地址以及端口號memset (&l ocal,0,sizeof(local);local.sin_family=AF_INET;local.sin_addr.S_u n. S_addr=hto nl(ulP);local.s in _port=ht on s(uPort);Liste nSocket=socket(AF_INET,SOCK_STREAM,0);if(Liste nSocket=INVALID_SOCKET)prin tf(socket函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號：%dn, WSAGetLastError();clea n_ up();return -1;/綁定

13、服務(wù)器地址iResult=b in d(Liste nSocket,(struct sockaddr *) & local,sizeof(local); if(iResult=SOCKET_ERROR)prin tf(bi nd函數(shù)調(diào)用錯(cuò)誤！錯(cuò)誤號：dn,WSAGetLastError();quit(Liste nSocket);return -1;/設(shè)置函數(shù)為監(jiān)聽狀態(tài)，監(jiān)聽隊(duì)列長度為NLISTENiResult=liste n(Liste nSocket,SOMAXCONN);if(iResult=SOCKET_ERROR)prin tf(Listen函數(shù)調(diào)用錯(cuò)誤！錯(cuò)誤號：%dn, WSAG

14、etLastError();quit(Liste nSocket);return -1;retur n Liste nSocket;SOCKET CSocketFrame:tcp_clie nt(char *hn ame,char *sn ame)Lint iResult=0;struct sockaddr_ in peer;SOCKET Clie ntSocket;/為服務(wù)器的地址 peer設(shè)置用戶輸入的地址以及端口號if(set_address(h names name，&peer,(char *)tcp)!=0)return -1;/創(chuàng)建套接字Clie ntSocket=socket(A

15、F INET,SOCK STREAM,0);if(Clie ntSocket=INVALID_SOCKET)prin tf(socket函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號:%dn, WSAGetLastError();clea n_ up();return -1;/請求建立連接iResult=c onn ect(Clie ntSocket,(struct sockaddr *) & peer,sizeof(peer); if(iResult=SOCKET_ERROR)prin tf(co nnect函數(shù)調(diào)用錯(cuò)誤！錯(cuò)誤號：%dn,WSAGetLastError();quit(Clie ntSocket);re

16、turn -1;return Clie ntSocket;SOCKET CSocketFrame:tcp_clie nt(ULONG ulP,USHORT uPort)Lint iResult=0;struct sockaddr_ in peer;SOCKET Clie ntSocket;/為服務(wù)器的地址 peer設(shè)置用戶輸入的地址以及端口號memset(&peer,0,sizeof(peer);peer.sin_family=AF_INET;peer.s in _addr.S_ un. S_addr=ht on l(ulP);peer.s in _port=ht on s(uPort);/創(chuàng)

17、建套接字Clie ntSocket=socket(AF_INET,SOCK_STREAM,0);if(Clie ntSocket=INVALID_SOCKET)prin tf(socket函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號：%dn, WSAGetLastError();clea n_ up();return -1;/請求建立連接iResult=c onn ect(Clie ntSocket,(struct sockaddr *) & peer,sizeof(peer); if(iResult=SOCKET_ERROR)prin tf(co nnect函數(shù)調(diào)用錯(cuò)誤！錯(cuò)誤號：%dn,WSAGetLastErro

18、r();quit(Clie ntSocket);return -1;return Clie ntSocket;服務(wù)器代碼設(shè)計(jì)：#defi ne MAXLINE 10000#defi ne ECHOPORT 7210 nt tcp_server_fu n_echo(SOCKET s)Lint iResult = 0;char recvli neMAXLINE;domemset(recvli ne, 0, MAXLINE);/接收數(shù)據(jù)iResult = recv(s, recvli ne, MAXLINE, 0);if (iResult 0)prin tf(服務(wù)器接收到數(shù)據(jù)：sn, recvli

19、ne);/回射程序已經(jīng)收到的數(shù)據(jù)iResult = sen d(s, recvli ne, iResult, 0);if (iResult = SOCKET_ERROR)prin tf(se nd函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號：ldn, WSAGetLastError();iResult = -1;elseprintf(服務(wù)器發(fā)送數(shù)據(jù) %sn, recvline);elseif (iResult = 0)prin tf(對方連接關(guān)閉，退出n);elseprin tf(recv函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號：%dn, WSAGetLastError();iResult = -1;break; while (iRes

20、ult 0);retur n iResult;nt main (i nt argc, char* argv)LCSocketFrame frame;int iResult = 0;SOCKET Liste nSocket, Co nn ectSocket;/輸入?yún)?shù)合法性檢查if (argc != 1)prin tf(usage:EchoTCPServer);return -1;/初始化frame.start_up();/創(chuàng)建服務(wù)器的流式套接字并在指定端口號上監(jiān)聽Liste nSocket =frame.tcp_server(char *)NULL,(char *)ECHOPORT); /改成

21、全部任意if (Liste nSocket = -1)return -1;prin tf(服務(wù)器準(zhǔn)備好回射服務(wù)。n);for (;)Conn ectSocket = accept(Liste nSocket, NULL, NULL);if (Co nn ectSocket != INVALID_SOCKET)/建立連接成功printf(rn建立連接成功 nn);/回射iResult = tcp_server_fu n_echo(C onn ectSocket);/如果出錯(cuò)，關(guān)閉當(dāng)前連接的套接字，繼續(xù)接受其他客戶端的請求if (iResult = -1)printf(當(dāng)前連接已關(guān)閉或出錯(cuò)！n);

22、elseprin tf(accept函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號：%dn, WSAGetLastError();frame.quit(Liste nSocket);return -1;/關(guān)閉套接字if (closesocket(Co nn ectSocket) = SOCKET_ERROR)prin tf(closesocket函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號：dn, WSAGetLastError();frame.quit(Liste nSocket);return 0;客戶端代碼設(shè)計(jì)：#defi ne ECHOPORT 7210#defi ne MAXLINE 10000nt tcp clie nt fun

23、echo(FILE *fp,SOCKET s)int iResult;char se ndlin eMAXLINE,recvli neMAXLINE;/初始化緩沖區(qū)memset(se ndli ne,O,MAXLINE);memset(recvli ne,0,MAXLINE);/循環(huán)發(fā)送用戶輸入的數(shù)據(jù)，并接受服務(wù)器返回的應(yīng)答，直到用戶輸入Q結(jié)束while(fgets(se ndli ne,MAXLINE,fp)!=NULL)if(*se ndli ne=Q)prin tf(i nput en d!n);/用戶發(fā)送數(shù)據(jù)結(jié)束iResult=shutdow n(s,SD_SEND); if(iRes

24、ult=SOCKET_ERROR)prin tf(shutdow n函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號：d,WSAGetLastError();return 0;iResult=se nd(s,se ndli ne,strle n(sen dli ne),O); if(iResult=SOCKET_ERROR)prin tf(se nd函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號：%d,WSAGetLastError();return -1;prin tf(r n客戶端發(fā)送數(shù)據(jù)：srn,se ndli ne);memset(recvli ne,0,MAXLINE); iResult=recv(s,recvli ne,MAXLINE

25、,O);if(iResult0)prin tf(客戶端收到數(shù)據(jù)：%sr n,recvli ne);elseif(iResult=0)prin tf(服務(wù)器終止！ n);elseprin tf(recv函數(shù)調(diào)用錯(cuò)誤，錯(cuò)誤號：%d,WSAGetLastError();break;memset(se ndli ne,O,MAXLINE);retur n iResult;nt main (i nt argc,char *argv)CSocketFrame frame;int iResult;SOCKET Clie ntSocket;/輸入?yún)?shù)合法性檢查/*if(argc!=2)prin tf(usage:EchoTCPServer); return -1; */WSD初始化frame.start_up();/創(chuàng)建客戶端的流式套接字prin tf(連接成功，請輸入回射字符串。n);Clie ntSocket=frame.tcp_clie nt(char *)argv1,(char *)ECHOPORT); if(Clie ntS