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socket 編程入門教程（一）TCP server 端：8、本章的完整源代碼

//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(8495) 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: ‘a(chǎn)toi’ was not declared in this scope
port = atoi(argv[1]); 回復更多評論

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