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            //Filename: TcpServerClass.hpp

            #ifndef TCPSERVERCLASS_HPP_INCLUDED
            #define TCPSERVERCLASS_HPP_INCLUDED

            #include             <unistd.h>
            #include             <iostream>
            #include             <sys/socket.h>
            #include             <arpa/inet.h>

            class TcpServer
            {
            private:
                            int listenSock;
                            int communicationSock;
                sockaddr_in servAddr;
                sockaddr_in clntAddr;
            public:
                TcpServer(            int listen_port);
                            bool isAccept();
                            void handleEcho();
            };


            #endif // TCPSERVERCLASS_HPP_INCLUDED
            

            

            //Filename: TcpServerClass.cpp

            #include             "TcpServerClass.hpp"

            TcpServer::TcpServer(            int listen_port)
            {
                            if ( (listenSock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0 ) {
                                throw "socket() failed";
                }

                memset(            &servAddr, 0, sizeof(servAddr));
                servAddr.sin_family             = AF_INET;
                servAddr.sin_addr.s_addr             = htonl(INADDR_ANY);
                servAddr.sin_port             = htons(listen_port);

                            if ( bind(listenSock, (sockaddr*)&servAddr, sizeof(servAddr)) < 0 ) {
                                throw "bind() failed";
                }

                            if ( listen(listenSock, 10) < 0 ) {
                                throw "listen() failed";
                }
            }

            bool TcpServer::isAccept()
            {
                unsigned             int clntAddrLen = sizeof(clntAddr);

                            if ( (communicationSock = accept(listenSock, (sockaddr*)&clntAddr, &clntAddrLen)) < 0 ) {
                                return false;
                }             else {
                    std::cout             << "Client(IP: " << inet_ntoa(clntAddr.sin_addr) << ") connected.\n";
                                return true;
                }
            }

            void TcpServer::handleEcho()
            {
                            const int BUFFERSIZE = 32;
                            char buffer[BUFFERSIZE];
                            int recvMsgSize;
                            bool goon = true;

                            while ( goon == true ) {
                                if ( (recvMsgSize = recv(communicationSock, buffer, BUFFERSIZE, 0)) < 0 ) {
                                    throw "recv() failed";
                    }             else if ( recvMsgSize == 0 ) {
                        goon             = false;
                    }             else {
                                    if ( send(communicationSock, buffer, recvMsgSize, 0) != recvMsgSize ) {
                                        throw "send() failed";
                        }
                    }
                }

                close(communicationSock);
            }
            

            演示程序：
            

            //Filename: main.cpp
            //Tcp Server C++ style, single work

            #include             <iostream>
            #include             "TcpServerClass.hpp"

            int echo_server(int argc, char* argv[]);

            int main(int argc, char* argv[])
            {
                            int mainRtn = 0;
                            try {
                    mainRtn             = echo_server(argc, argv);
                }
                            catch ( const char* s ) {
                    perror(s);
                    exit(EXIT_FAILURE);
                }

                            return mainRtn;
            }

            int echo_server(int argc, char* argv[])
            {
                            int port;
                            if ( argc == 2 ) {
                    port             = atoi(argv[1]);
                }             else {
                    port             = 5000;
                }

                TcpServer myServ(port);

                            while ( true ) {
                                if ( myServ.isAccept() == true ) {
                        myServ.handleEcho();
                    }
                }

                            return 0;
            }
            


            

	
            posted on 2008-07-16 12:57 lf426 閱讀(8458) 評論(3)  編輯 收藏 引用  所屬分類: SDL入門教程 、Linux與C++ 、socket 編程入門教程 
            

            







            
	    
    


            
FeedBack:

            
	

		
            
			
            
			
            # re: Linux socket 編程入門（一）TCP server 端：8、本章的完整源代碼 2009-10-31 11:09 Austin
            
				
            不能編譯通過ubuntu server 9.04
            GCC 4.33

            TcpServerClass.o: In function `__static_initialization_and_destruction_0(int, int)':
            TcpServerClass.cpp:(.text+0x1d): undefined reference to `std::ios_base::Init::Init()'
            TcpServerClass.cpp:(.text+0x22): undefined reference to `std::ios_base::Init::~Init()'
            TcpServerClass.o: In function `TcpServer::handleEcho()':
            TcpServerClass.cpp:(.text+0xbd): undefined reference to `__cxa_allocate_exception'
            TcpServerClass.cpp:(.text+0xd7): undefined reference to `typeinfo for char const*'
            TcpServerClass.cpp:(.text+0xdf): undefined reference to `__cxa_throw'
            TcpServerClass.cpp:(.text+0x125): undefined reference to `__cxa_allocate_exception'
            TcpServerClass.cpp:(.text+0x13f): undefined reference to `typeinfo for char const*'
            TcpServerClass.cpp:(.text+0x147): undefined reference to `__cxa_throw'
            TcpServerClass.o: In function `TcpServer::isAccept()':
            TcpServerClass.cpp:(.text+0x1da): undefined reference to `std::cout'
            TcpServerClass.cpp:(.text+0x1df): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
            TcpServerClass.cpp:(.text+0x1eb): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
            TcpServerClass.cpp:(.text+0x1fb): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
            TcpServerClass.o: In function `TcpServer::TcpServer(int)':
            TcpServerClass.cpp:(.text+0x24b): undefined reference to `__cxa_allocate_exception'
            TcpServerClass.cpp:(.text+0x265): undefined reference to `typeinfo for char const*'
            TcpServerClass.cpp:(.text+0x26d): undefined reference to `__cxa_throw'
            TcpServerClass.cpp:(.text+0x2f3): undefined reference to `__cxa_allocate_exception'
            TcpServerClass.cpp:(.text+0x30d): undefined reference to `typeinfo for char const*'
            TcpServerClass.cpp:(.text+0x315): undefined reference to `__cxa_throw'
            TcpServerClass.cpp:(.text+0x33d): undefined reference to `__cxa_allocate_exception'
            TcpServerClass.cpp:(.text+0x357): undefined reference to `typeinfo for char const*'
            TcpServerClass.cpp:(.text+0x35f): undefined reference to `__cxa_throw'
            TcpServerClass.o: In function `TcpServer::TcpServer(int)':
            TcpServerClass.cpp:(.text+0x3a3): undefined reference to `__cxa_allocate_exception'
            TcpServerClass.cpp:(.text+0x3bd): undefined reference to `typeinfo for char const*'
            TcpServerClass.cpp:(.text+0x3c5): undefined reference to `__cxa_throw'
            TcpServerClass.cpp:(.text+0x44b): undefined reference to `__cxa_allocate_exception'
            TcpServerClass.cpp:(.text+0x465): undefined reference to `typeinfo for char const*'
            TcpServerClass.cpp:(.text+0x46d): undefined reference to `__cxa_throw'
            TcpServerClass.cpp:(.text+0x495): undefined reference to `__cxa_allocate_exception'
            TcpServerClass.cpp:(.text+0x4af): undefined reference to `typeinfo for char const*'
            TcpServerClass.cpp:(.text+0x4b7): undefined reference to `__cxa_throw'
            TcpServerClass.o:(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
            main.o: In function `__static_initialization_and_destruction_0(int, int)':
            main.cpp:(.text+0x1d): undefined reference to `std::ios_base::Init::Init()'
            main.cpp:(.text+0x22): undefined reference to `std::ios_base::Init::~Init()'
            main.o: In function `main':
            main.cpp:(.text+0x11d): undefined reference to `__cxa_begin_catch'
            main.cpp:(.text+0x148): undefined reference to `__cxa_end_catch'
            main.o:(.gcc_except_table+0x18): undefined reference to `typeinfo for char const*'
            main.o:(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
            collect2: ld returned 1 exit status
            make: *** [main] Error 1  回復  更多評論
              
			
            
		
            
	
		
            
			
            
			
            # re: socket 編程入門教程（一）TCP server 端：8、本章的完整源代碼 2010-10-20 11:04 12345678
            
				
            @Austin

            用g++ 編譯！


              回復  更多評論
              
			
            
		
            
	
		
            
			
            
			
            # re: socket 編程入門教程（一）TCP server 端：8、本章的完整源代碼 2015-08-29 12:55 xxz
            
				
            你好我將你三個程序分別復制到三個文件中，然后編譯main.cpp,用g++ 編譯通不過
            main.cpp: In function ‘int main(int, char**)’:
            main.cpp:16:17: error: ‘perror’ was not declared in this scope
                     perror(s);
                             ^
            main.cpp:17:14: error: ‘EXIT_FAILURE’ was not declared in this scope
                     exit(EXIT_FAILURE);
                          ^
            main.cpp:17:26: error: ‘exit’ was not declared in this scope
                     exit(EXIT_FAILURE);
                                      ^
            main.cpp: In function ‘int echo_server(int, char**)’:
            main.cpp:27:28: error: ‘atoi’ was not declared in this scope
                     port = atoi(argv[1]);  回復  更多評論
              
			
            
		
            
	




            






            

				
	



            


    
    







	   
	



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