socket服务器搭建(linux搭建socket服务器)

请自行参考TCP/udp连接基础解释，然后根据自身问题进行排查。

（1）设置用户验证和记账功能，可按用户进行记账，没有登记的用户无权通过代理服务器访问Internet网。并对用户的访问时间、访问地点、信息流量进行统计。 (2）对用户进行分级管理，设置不同用户的访问权限，对外界或内部的Internet地址进行过滤，设置不同的访问权限。 (3）增加缓冲器（Cache)，提高访问速度，对经常访问的地址创建缓冲区，大大提高热门站点的访问效率。通常代理服务器都设置一个较大的硬盘缓冲区（可能高达几个GB或更大），当有外界的信息通过时，同时也将其保存到缓冲区中，当其他用户再访问相同的信息时，则直接由缓冲区中取出信息，传给用户，以提高访问速度。

应该是c/s程序吧，直接在服务器上调用java命令运行main类就行，就像我们开始学习java时需要手动编译运行一样，先javac编译，再java运行。 你把在你本地编译好的class文件，放到服务器，通过java main类路径的方式后台运行就可以 。

使用花生壳动态域名解析软件啊，针对无法直接做端口映射服务的，可以直接用这个软件，官网注册个账号赠送一个壳域名，挺好的。建议百度搜索花生壳到官网看看

1.简单服务器//#include//#pragmacomment(lib,"WS2_32.lib")WSADATAwsd;staticUINTport=%%1;UINTListen(LPVOIDpParam){SOCKETsServer,sClient;charbuf[1024];intretVal;if(WSAStartup(MAKEWORD(2,2),&wsd)!=0){return-1;//失败}sServer=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);if(INVALID_SOCKET==sServer){WSACleanup();return-1;//创建套接字失败}SOCKADDR_INaddrServ;addrServ.sin_family=AF_INET;addrServ.sin_port=htons((short)pParam);addrServ.sin_addr.s_addr=INADDR_ANY;retVal=bind(sServer,(LPSOCKADDR)&addrServ,sizeof(SOCKADDR_IN));if(SOCKET_ERROR==retVal){closesocket(sServer);WSACleanup();return-1;//绑定套接字失败}retVal=listen(sServer,1);if(SOCKET_ERROR==retVal){closesocket(sServer);WSACleanup();return-1;//开始监听失败}sockaddr_inaddrClient;intaddrClientlen=sizeof(addrClient);sClient=accept(sServer,(sockaddrFAR*)&addrClient,&addrClientlen);if(INVALID_SOCKET==sClient){closesocket(sServer);WSACleanup();return-1;//开始接受客户端连接失败}ZeroMemory(buf,sizeof(buf));retVal=recv(sClient,buf,sizeof(buf),0);if(SOCKET_ERROR==retVal){closesocket(sServer);closesocket(sClient);WSACleanup();return-1;//接收数据失败}CString%%2(buf);closesocket(sServer);closesocket(sClient);WSACleanup();return0;}CWinThread*pThread=AfxBeginThread(Listen,&port);2.简单客户端//#include//#pragmacomment(lib,"WS2_32.lib")WSADATAwsd;SOCKETsHost;SOCKADDR_INservAddr;charbuf[1024];intretVal;if(WSAStartup(MAKEWORD(2,2),&wsd)!=0){return-1;//失败}sHost=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);if(INVALID_SOCKET==sHost){WSACleanup();return-1;//创建套接字失败}servAddr.sin_family=AF_INET;servAddr.sin_addr.s_addr=inet_addr(%%3);servAddr.sin_port=htons((short)%%2);intnServAddlen=sizeof(servAddr);retVal=connect(sHost,(LPSOCKADDR)&servAddr,sizeof(servAddr));if(SOCKET_ERROR==retVal){closesocket(sHost);WSACleanup();return-1;//连接服务器失败}ZeroMemory(buf,sizeof(buf));strcpy(buf,%%3);retVal=send(sHost,buf,sizeof(buf),0);if(SOCKET_ERROR==retVal){closesocket(sHost);WSACleanup();return-1;//向服务器发送数据失败}closesocket(sHost);WSACleanup();3.获得本机IP//#include//#pragmacomment(lib,"WS2_32.lib")WSADATAwsd;if(WSAStartup(MAKEWORD(2,2),&wsd)!=0){return-1;//失败}charszHostname[100],szHostaddress[200];if(gethostname(szHostname,sizeof(szHostname))!=SOCKET_ERROR){HOSTENT*pHostEnt=gethostbyname(szHostname);if(pHostEnt!=NULL){sprintf(szHostaddress,"%d.%d.%d.%d",(pHostEnt->h_addr_list[0][0]&0x00ff),(pHostEnt->h_addr_list[0][1]&0x00ff),(pHostEnt->h_addr_list[0][2]&0x00ff),(pHostEnt->h_addr_list[0][3]&0x00ff));}}elsereturn;CString%%1(szHostaddress);4.端对端通信//#include//#pragmacomment(lib,"WS2_32.lib")WSADATAwsd;SOCKETs;charbuf[1024];if(WSAStartup(MAKEWORD(2,2),&wsd)!=0){return-1;//失败}s=socket(AF_INET,SOCK_DGRAM,0);if(s==INVALID_SOCKET){WSACleanup();return-1;//创建套接字失败}SOCKADDR_INservAddr;servAddr.sin_family=AF_INET;servAddr.sin_addr.s_addr=inet_addr(%%1);servAddr.sin_port=htons(INADDR_ANY);if(bind(s,(SOCKADDR*)&servAddr,sizeof(SOCKADDR_IN))==SOCKET_ERROR){closesocket(s);WSACleanup();return-1;//绑定套接字失败}intnServAddrlen=sizeof(servAddr);ZeroMemory(buf,sizeof(buf));if(recvfrom(s,buf,sizeof(buf),0,(SOCKADDR*)&servAddr,&nServAddrlen)==SOCKET_ERROR){closesocket(s);WSACleanup();return-1;//接收数据失败}CString%%2(buf);ZeroMemory(buf,sizeof(buf));strcpy(buf,%%3);SOCKADDR_INclientAddr;clientAddr.sin_family=AF_INET;clientAddr.sin_addr.s_addr=inet_addr(%%4);clientAddr.sin_port=htons((short)%%5);intnClientlen=sizeof(clientAddr);if(sendto(s,buf,sizeof(buf),0,(SOCKADDR*)&clientAddr,nClientlen)==SOCKET_ERROR){closesocket(s);WSACleanup();return-1;//向服务器发送数据失败}closesocket(s);WSACleanup();5.点对点通信//#include//#pragmacomment(lib,"WS2_32.lib")WSADATAwsd;SOCKADDR_INaddrServ,addrServ2;SOCKETsServer,sClient,sHost;intretVal;sockaddr_inaddrClient;charbuf[1024];staticUINTport=%%2;BOOLlistenerRun=TRUE;UINTListen(LPVOIDpParam){addrServ.sin_family=AF_INET;addrServ.sin_port=htons((UINT)pParam);addrServ.sin_addr.s_addr=INADDR_ANY;retVal=bind(sServer,(LPSOCKADDR)&addrServ,sizeof(SOCKADDR_IN));if(SOCKET_ERROR==retVal){closesocket(sServer);WSACleanup();return-1;//绑定套接字失败}retVal=listen(sServer,1);if(SOCKET_ERROR==retVal){closesocket(sServer);WSACleanup();return-1;//开始监听失败}intaddrClientlen=sizeof(addrClient);sClient=accept(sServer,(sockaddrFAR*)&addrClient,&addClientlen);if(INVALID_SOCKET==sClient){closesocket(sServer);WSACleanup();return-1;//接收客户端请求失败}while(listenerRun){ZeroMemory(buf,sizeof(buf));retVal=recv(sClient,buf,sizeof(buf));if(SOCKET_ERROR==retVal){closesocket(sServer);closesocket(sClient);WSACleanup();return-1;//接收客户端数据失败}CString%%4(buf);}}if(WSAStartup(MAKEWORD(2,2),&wsd)!=0){return-1;//失败}sServer=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);if(INVALID_SOCKET==sServer){WSACleanup();return-1;//创建套接字失败}CWinThread*pThread=AfxBeginThread(Listen,&port);sHost=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);if(INVALID_SOCKET==sHost){WSACleanup();return-1;//创建套接字失败}servAddr2.sin_family=AF_INET;servAddr2.sin_addr.s_addr=inet_addr(%%1);servAddr.sin_port=htons((short)%%3);intnServerAddrlen=sizeof(servAddr2);retVal=connect(sHost,(LPSOCKADDR)&servAddr2,sizeof(servAddr2));if(SOCKET_ERROR==retVal){closesocket(sHost);WSACleanup();return-1;//连接失败}zeroMemory(buf,sizeof(buf));strcpy(buf,%%5);retVal=send(sHost,buf,sizeof(buf),0);if(SOCKET_ERROR==retVal){closesocket(sHost);WSACleanup();return-1;//向发送数据失败}listenerRun=FALSE;DWORDdwExitCode;::GetExitCodeThread(pThread->m_hThread,&dwExitCode);pThread=null;closesocket(sServer);closesocket(sClient);closesocket(sHost);WSACleanup();