linux下socket编程bind函数返回异常码98 Address already in use
linux下socket编程bind函数返回错误码98 Address already in use
初次接触linux socket编程,遇到了这个问题…… 查看了其他地方的说明,都没有起作用……
发一下代码,求帮忙看一下~ 其中,Socket和ServerSocket不是我自己写的,是直接应用的别人的类。
Socket.h
Socket.cpp
初次接触linux socket编程,遇到了这个问题…… 查看了其他地方的说明,都没有起作用……
发一下代码,求帮忙看一下~ 其中,Socket和ServerSocket不是我自己写的,是直接应用的别人的类。
Socket.h
// Definition of the Socket class
#ifndef Socket_class
#define Socket_class
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <unistd.h>
#include <string>
#include <arpa/inet.h>
const int MAXHOSTNAME = 200;
const int MAXCONNECTIONS = 5;
const int MAXRECV = 500;
class Socket
{
public:
Socket();
virtual ~Socket();
// Server initialization
bool create();
bool bind ( const int port );
bool listen() const;
bool accept ( Socket& ) const;
// Client initialization
bool connect ( const std::string host, const int port );
// Data Transimission
bool send ( const std::string ) const;
int recv ( std::string& ) const;
void set_non_blocking ( const bool );
bool is_valid() const { return m_sock != -1; }
private:
int m_sock;
sockaddr_in m_addr;
};
#endif
Socket.cpp
// Implementation of the Socket class.
#include "Socket.h"
#include "string.h"
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <iostream>
using namespace std;
Socket::Socket() :
m_sock ( -1 )
{
memset ( &m_addr,
0,
sizeof ( m_addr ) );
}
Socket::~Socket()
{
if ( is_valid() )
::close ( m_sock );
}
bool Socket::create()
{
m_sock = socket ( AF_INET,
SOCK_STREAM,
0 );
if ( ! is_valid() )
return false;
// TIME_WAIT - argh
int on = 1;
if ( setsockopt ( m_sock, SOL_SOCKET, SO_REUSEADDR, ( const char* ) &on, sizeof ( on ) ) == -1 )
return false;
return true;
}
bool Socket::bind ( const int port )
{
if ( ! is_valid() )
{
cout<<"is_valid failed."<<endl;
return false;
}
m_addr.sin_family = AF_INET;
m_addr.sin_addr.s_addr = INADDR_ANY;
m_addr.sin_port = htons ( port );
int bind_return = ::bind ( m_sock,
( struct sockaddr * ) &m_addr,
sizeof ( m_addr ) );
if ( bind_return == -1 )
{
cout<<"bind return failed. errno:"<<errno<<endl;
return false;
}
return true;
}
bool Socket::listen() const
{
if ( ! is_valid() )
{
return false;
}
int listen_return = ::listen ( m_sock, MAXCONNECTIONS );
if ( listen_return == -1 )
{
return false;
}
return true;
}
bool Socket::accept ( Socket& new_socket ) const
{
int addr_length = sizeof ( m_addr );
new_socket.m_sock = ::accept ( m_sock, ( sockaddr * ) &m_addr, ( socklen_t * ) &addr_length );
if ( new_socket.m_sock <= 0 )
return false;
else
return true;
}
bool Socket::send ( const string s ) const
{