# include "winsock2. H" 
# pragma comment (lib, "ws2_32. Lib") 
# define MAXNUM 20 

The class CServerDlg: public CDialog 
{
Public: 
CIPAddressCtrl m_IP; 
Int m_port; 
Public: 
The SOCKET m_server m_client; 
The SOCKET m_Clients [MAXNUM];//client socket 
Int m_CurClient;//the number of clients currently connected 
Virtual void the HandleData (); 
Virtual BOOL PreTranslateMessage * pMsg (MSG); 

Public: 
Cstrings m_serverIP; 

}; 


Write the above is ServerDlg. H I defined in the content 


In the left below is ServerDlg CPP OnOK function (for response to monitor button) 
Void CServerDlg: : OnOK () 
{
//TODO: Add extra validation here 

//the server address 
Sockaddr_in serveraddr; 
Serveraddr. Sin_family=AF_INET; Internal network protocol TCP/UDP//
M_IP. GetWindowText (m_serverIP); 
//set the machine address 
Serveraddr. Sin_addr. S_un. S_addr=inet_addr (m_serverIP); 
The UpdateData (TRUE); 
//set the port number 
Serveraddr. Sin_port=htons (m_port); 
//binding address 
If (bind (m_server, (sockaddr *) & amp; Serveraddr, sizeof (serveraddr))) 
{
MessageBox (" binding address failure "); 
return; 
} 

//to start listening to 
Listen (m_server, 50); 
//CDialog: : OnOK (); 


} 

Problem is that no matter what I input the IP address, all show binding address, failure, what reason is this?
Left below is my dialog

From top to bottom respectively is CIPAddressCtrl m_IP and int m_port

CodePudding user response:

M_IP. GetWindowText (m_serverIP);
Are you sure this is executed, m_serverIP value is the IP address you entered?

CodePudding user response:

reference 1st floor happyparrot response:

m_IP. GetWindowText (m_serverIP);
Are you sure this is executed, m_serverIP value is the IP address you entered?

This statement is not mean it...

CodePudding user response:

What is not important, the important thing is the value right?

CodePudding user response:

Bind failure, to see if WSAGetLastError () what is the value?

CodePudding user response:

Please did you solve the problem? I also met,,

CodePudding user response:

Value is the MessageBox (m_IP) and port can be normal access to, WSAGetLastError () this value does not did not return any value

CodePudding user response:

M_server initialization?
The WSAStartUp call?