TCP套接字程序发送一个缓冲区。

//下面的代码工作正常，但用于发送字符串。为了发送包含具有不同数据类型字段的标题的缓冲区（缓冲区地址），我必须做什么更改？（我是新来编程。所以，原谅小白的我）TCP套接字程序发送一个缓冲区。

ClientSocket.cpp 

ClientSocket::ClientSocket (std::string host, int port) 
{ 
    if (! Socket::create()) 
    { 
     throw SocketException ("Could not create client socket."); 
} 

    if (! Socket::connect (host, port)) 
    { 
     throw SocketException ("Could not connect."); 
    } 

} 


const ClientSocket& ClientSocket::operator << (const std::string& s) const 
{ 
    if (! Socket::send (s)) 
    { 
     throw SocketException ("Could not write to socket."); 
    } 

    return *this; 

} 


const ClientSocket& ClientSocket::operator >> (std::string& s) const 
{ 
    if (! Socket::recv (s)) 
    { 
     throw SocketException ("Could not read from socket."); 
    } 
    return *this; 
} 






simple_client_main.cpp 

#include "ClientSocket.h" 
#include "SocketException.h" 
#include <iostream> 
#include <string> 

int main (int argc, int argv[]) 
{ 
    try 
    { 

     ClientSocket client_socket ("169.254.103.63", 30000); 

     std::string reply; 

     try 
    { 
     client_socket << "Test message."; 
     client_socket >> reply; 
    } 
     catch (SocketException&) {} 

     std::cout << "We received this response from the server:\n\"" << reply << "\"\n";; 

    } 
    catch (SocketException& e) 
    { 
     std::cout << "Exception was caught:" << e.description() << "\n"; 
    } 

    return 0; 
} 




ServerSocket.cpp 

// Implementation of the ServerSocket class 

#include "ServerSocket.h" 
#include "SocketException.h" 


ServerSocket::ServerSocket (int port) 
{ 
    if (! Socket::create()) 
    { 
     throw SocketException ("Could not create server socket."); 
    } 

    if (! Socket::bind (port)) 
    { 
     throw SocketException ("Could not bind to port."); 
    } 

    if (! Socket::listen()) 
    { 
     throw SocketException ("Could not listen to socket."); 
    } 

} 

ServerSocket::~ServerSocket() 
{ 
} 


const ServerSocket& ServerSocket::operator << (const std::string& s) const 
{ 
    if (! Socket::send (s)) 
    { 
     throw SocketException ("Could not write to socket."); 
    } 

    return *this; 

} 


const ServerSocket& ServerSocket::operator >> (std::string& s) const 
{ 
    if (! Socket::recv (s)) 
    { 
     throw SocketException ("Could not read from socket."); 
    } 

    return *this; 
} 

void ServerSocket::accept (ServerSocket& sock) 
{ 
    if (! Socket::accept (sock)) 
    { 
     throw SocketException ("Could not accept socket."); 
    } 
} 




simple_server_main.cpp 

#include "ServerSocket.h" 
#include "SocketException.h" 
#include <string> 
#include <iostream> 

int main (int argc, int argv[]) 
{ 
    std::cout << "running....\n"; 

    try 
    { 
     // Create the socket 
     ServerSocket server (30000); 

     while (true) 
    { 

     ServerSocket new_sock; 
     server.accept (new_sock); 

     try 
     { 
      while (true) 
     { 
      std::string data; 
      new_sock >> data; 
      new_sock << data; 
     } 
     } 
     catch (SocketException&) {} 

    } 
    } 
    catch (SocketException& e) 
    { 
    std::cout << "Exception was caught:" << e.description() << "\nExiting.\n"; 
    } 

    return 0; 
}

来源

2014-04-24 user3567387

你将不得不增加新的send（）和recv（）函数，你没有显示。一个套接字可以发送二进制数据，但你必须告诉它的大小以字节为单位。在recv（）方面，将有一个问题计算出你需要多少个字节，然后才能拥有整个结构。这通常需要添加一些协议，例如每条消息的长度前缀。

来源

2014-04-24 13:26:20

TCP套接字程序发送一个缓冲区。

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