PDA

Visualizza la versione completa : [C++] Errore per identificatore non dichiarato


Lomba1986
07-03-2012, 10:56
Ciao a tutti...ho un problema del cavolo ma non riesco a venirne a capo e ci sto perdendo troppo tempo...


// ServerTCP.cpp : definisce il punto di ingresso dell'applicazione console.
//

#include "stdafx.h"
#include "ServerTCP.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// L'unico oggetto applicazione

CWinApp theApp;

using namespace std;

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
int nRetCode = 0;

cout << "Press ESCAPE to terminate program\r\n";
AfxBeginThread(ServerThread,0);
while(_getch()!=27);

return nRetCode;
}

UINT ServerThread(LPVOID pParam)
{
cout << "Starting up TCP server\r\n";

//A SOCKET is simply a typedef for an unsigned int.
//In Unix, socket handles were just about same as file
//handles which were again unsigned ints.
//Since this cannot be entirely true under Windows
//a new data type called SOCKET was defined.
SOCKET server;

//WSADATA is a struct that is filled up by the call
//to WSAStartup
WSADATA wsaData;

//The sockaddr_in specifies the address of the socket
//for TCP/IP sockets. Other protocols use similar structures.
sockaddr_in local;

//WSAStartup initializes the program for calling WinSock.
//The first parameter specifies the highest version of the
//WinSock specification, the program is allowed to use.
int wsaret=WSAStartup(0x101,&wsaData);

//WSAStartup returns zero on success.
//If it fails we exit.
if(wsaret!=0)
{
return 0;
}

//Now we populate the sockaddr_in structure
local.sin_family=AF_INET; //Address family
local.sin_addr.s_addr=INADDR_ANY; //Wild card IP address
local.sin_port=htons((u_short)20248); //port to use

//the socket function creates our SOCKET
server=socket(AF_INET,SOCK_STREAM,0);

//If the socket() function fails we exit
if(server==INVALID_SOCKET)
{
return 0;
}

//bind links the socket we just created with the sockaddr_in
//structure. Basically it connects the socket with
//the local address and a specified port.
//If it returns non-zero quit, as this indicates error
if(bind(server,(sockaddr*)&local,sizeof(local))!=0)
{
return 0;
}

//listen instructs the socket to listen for incoming
//connections from clients. The second arg is the backlog
if(listen(server,10)!=0)
{
return 0;
}

//we will need variables to hold the client socket.
//thus we declare them here.
SOCKET client;
sockaddr_in from;
int fromlen=sizeof(from);

while(true)//we are looping endlessly
{
char temp[512];

//accept() will accept an incoming
//client connection
client=accept(server,
(struct sockaddr*)&from,&fromlen);

sprintf(temp,"Your IP is %s\r\n",inet_ntoa(from.sin_addr));

//we simply send this string to the client
send(client,temp,strlen(temp),0);
cout << "Connection from " << inet_ntoa(from.sin_addr) <<"\r\n";

//close the client socket
closesocket(client);

}

//closesocket() closes the socket and releases the socket descriptor
closesocket(server);

//originally this function probably had some use
//currently this is just for backward compatibility
//but it is safer to call it as I still believe some
//implementations use this to terminate use of WS2_32.DLL
WSACleanup();

return 0;
}



Simpaticamente il compilatore Visual Studio 2010 non mi da errori (non mi segna in rosso cosa che non sono state dichiare per intenderci) tuttavia nel momento in cui compilo mi dice

Errore 1 error C2065: 'ServerThread': identificatore non dichiarato

e mi da errore sulla chiamata


AfxBeginThread(ServerThread,0);


Che posso fare?
Qualcuno ha qualche idea?

oregon
07-03-2012, 11:04
Il compilatore ha ragione dato che non sa cosa sia ServerThread quando lo incontra nel main.

Puoi semplicemente spostare il main dopo la funzione ServerThread ...


P.S. Dovresti usare titoli pił significativi ...

Lomba1986
07-03-2012, 11:05
Ehmmm si scusatemi...

Nella fretta ho messo solamente il linguaggio... :D

Chiedo perdono

Ciao a tutti

ps: ho risolto grazie mille :-D

Loading