实验报告与视频-实验一

实验目掌握Client/Server结构的设计与开发方掌握Socket实验环编译器实验内容与结果TCP/IP网络环境下，不同主机上的两个应用程序通信Winsock的启动和终止——WSAStaruop(和WSACleanup(创建套接字——socket()绑定本地地址——bind(侦听连接——listen()建立套接字连接——accept()和connect()面向连接的数据传输——send()和recv()无连接的数据传输snedto()和recvfrom(输入输出多路复用——select())时间函数——GetLocalTime(WSAStaruop的函数如下intWSAStartup(WORDwVersionRequested,LPWSADATA的副版本，低位字节指定Winsock的主版本，然后用MAKEWORD(X,Y)宏获 //WinsockWORDwHighVersion;WinsockcharszDescription[WSADESCRIPTION_LEN+1];//套接字实现描述unsignedshortiMaxSockets;最大套接字数unsignedshortiMaxUdpDg;//最大数据报长度charFAR*IpVendorInfo;}WSADATA,FAR intSOCKETsocket(intaf,inttype,intaf：指定网络地址族，一般为AF_INET。 protocol：指定网络协议，一般为0，表示默认的TCP/IP协intbind(SOCKETs,conststructsockaddtFAR*name,int参数说 namesockaddrnamelensockaddrsockddrTCP/IPstruct sin_family;//指定地址族，一般为AF_INET structin_addrsin_addr；//IP sin_zero[8IPin_addrin_addr{{struct{u_shorts_w1,s_w2;}S_un_w;u_longintlisten(SOCKETs,int 指定正在等待连接的队列的最大长度，可取1~5。SOCKETaccept(SOCKETs,structsockaddrFAR*addr,intFAR*s：指定处于状态的套接字句柄。 指定一个有效的SOCKADDR_IN结构地址。addrlen：指定SOCKADDR_IN结构的长度。accept函数返回后，addr变量中会包含请求连接的客户IP地址，并返回 d(SOCKETs,constcharFAR*buf,intlen,intflagss：指定发送端套接字描 一般置0。intrecv(SOCKETs,charFAR*buf,intlen,intflagss：指定接收端套接字描*bufrecvlenbufflags：一般置0 dto（SOCKETs，constcharFAR*buf，intlen,intflags，conststructsockaddrFAR*to，inttolen；intrecvfrom（SOCKETs,charFAR*buf，intlen,intflags，structsockaddrFAR**from，intFAR*fromlen；intselect(intnfds,fd_setFAR*readfds,fd_setFAR*writefds,fd_setFAR*exceptfds,conststructtimevalFAR*timeout);nfds：本参数忽略，仅起到兼容作用 readfds：writefds（exceptfds（timeout：select()最多等待时间，对阻塞操作则为NULL。intclosesocket（socket程序（手写或者打印后作为附件程序的运行和（提供截图Windows6.1.7600](c)2009Corporation。保留所利。 [simplex-talkclient]connectiontolocalhostis[simplex-talkclient]pleaseinputyourmessage(emptyinputtohalt):[simplex-talkclient]send6charstoserver201311313:51:09.4452013113Windows6.1.7600](c)2009Corporation。保留所利。 [simplex-talkclient]connectiontolocalhostis[simplex-talkclient]pleaseinputyourmessage(emptyinputtohalt):[simplex-talkclient]send6charstoserver201311313:51:09.4452013113Windows6.1.7600](c)2009Corporation。保留所利。 [simplex-talkclient]connectiontolocalhostis[simplex-talkclient]pleaseinputyourmessage(emptyinputtohalt):[simplex-talkclient]send6charstoserver201311313:51:09.4452013113Windows6.1.7600](c)2009Corporation。保留所利。 [simplex-talkclient]connectiontolocalhostis[simplex-talkclient]pleaseinputyourmessage(emptyinputtohalt):[simplex-talkclient]send6charstoserver201311313:51:09.4452013113Windows6.1.7600](c)2009Corporation。保留所利。 [simplex-talkclient]connectiontolocalhostis[simplex-talkclient]pleaseinputyourmessage(emptyinputtohalt):[simplex-talkclient]send6charstoserver201311314:03:56.148No2013113[simplex-talkclient]send6charstoserver20131132013113Windows6.1.7600](c)2009Corporation。保留所利。 [simplex-talkclient]connectiontolocalhostis[simplex-talkclient]pleaseinputyourmessage(emptyinputtohalt):[simplex-talkclient]send6charstoserver201311314:03:56.148No2013113[simplex-talkclient]send6charstoserver20131132013113Windows6.1.7600](c)2009Corporation。保留所利。 [simplex-talkclient]connectiontolocalhostis[simplex-talkclient]pleaseinputyourmessage(emptyinputtohalt):[simplex-talkclient]send6charstoserver201311314:03:56.148No2013113[simplex-talkclient]send6charstoserver20131132013113Windows6.1.7600](c)2009Corporation。保留所利。 [simplex-talkclient]connectiontolocalhostis[simplex-talkclient]pleaseinputyourmessage(emptyinputtohalt):[simplex-talkclient]send6charstoserver201311314:03:56.148No2013113[simplex-talkclient]send6charstoserver20131132013113实验中的问题如遇到无法编译的问题，经过改正，发现codeblocks只有在主函数默认为main.c情况下才会编译成功，然后是sleep函数，第一个S大写才能通过。最后是附程序源代码（只附主要部分代码while len=recv(new_s,buf,sizeof(buf),/*wliucomments:modifiedtostopsending*/if(strlen(buf)==0) /*wliucomments:receivedemptymessage*/printf("[simplex-talkserver]emptymessageis}

elseprintf("[simplex-talkserver]received%d\n",fputs(buf,stdout); ACKto

}}if(strlen(buf)==1 /*wliucomments:userinputemptymessagewith

buf[0]=send(s,buf,1,printf("[simplex-talkclient]emptymessageissend}elsebuf[MAX_BUFSIZE-1]=len=strlen(buf)+1;send(s,buf,len,0); server\n",strlen(buf)); printf("NoAck\n"); server\n",strlen(buf)); }}while len=recv(new_s,buf,sizeof(buf),/*wliucomments:modifiedtostopsending*/if(strlen(buf)==0) /*wliucomments:receivedemptymessage*/printf("[simplex-talkserver]emptymessageis}elseprintf("[simplex-talkserver]received%d\n",fputs(buf,stdout); printf("sendACKto server]received%dchars\n",fputs(buf,stdout); }}if(strlen(buf)==1 /*wliucomments:userinputemptymessagewith

buf[0]=send(s,buf,1,printf("[simplex-talkclient]emptymessageissend}elsebuf[MAX_BUFSIZE-1]=len=strlen(buf)+1;send(s,buf,len,0);printf("[simplex- printf("NoAck\n"); server\n",strlen(buf)); }}while len=recv(new_s,buf,sizeof(buf),/*wliucomments:modifiedtostopsending*/if(strlen(buf)==0) /*wliucomments:receivedemptymessage}

printf("[simplex-talkserver]emptymessageiselseprintf("[simplex-talkserver]received%d\n",fputs(buf,stdout); ACKto

printf("[simplex-talkserver]received%dchars\n",fputs(buf,stdout); ACKto

}}if(strlen(buf)==1 /*wliucomments:use