I just found out about PGM (Pragmatic General Multicast) in windows sockets. I read up on msdn how to configure a send and receive socket but it's not working.
This is the code so far:
#pragma comment(lib,"Ws2_32.lib")
#include <stdio.h>
#include <iostream>
#include <ws2tcpip.h>
#include <Winsock2.h>
#include <wsrm.h>
int main( int argc, const char* argv[] )
{
DWORD dwRet = NO_ERROR;
WSADATA wsa_data;
if( WSAStartup( MAKEWORD( 2, 0 ), &wsa_data ) != 0 ) {
dwRet = GetLastError();
WSACleanup();
return dwRet;
}
SOCKET s;
SOCKADDR_IN salocal, sasession;
int dwSessionPort;
s = socket( AF_INET, SOCK_RDM, IPPROTO_RM );
if( s == INVALID_SOCKET )
{
dwRet = GetLastError();
WSACleanup();
return dwRet;
}
salocal.sin_family = AF_INET;
salocal.sin_port = htons (0); // Port is ignored here
salocal.sin_addr.s_addr = htonl (INADDR_ANY);
int iRet = bind (s, (SOCKADDR *)&salocal, sizeof(salocal));
if( iRet == SOCKET_ERROR )
{
dwRet = GetLastError();
WSACleanup();
return dwRet;
}
dwSessionPort = 0;
sasession.sin_family = AF_INET;
sasession.sin_port = htons (dwSessionPort);
sasession.sin_addr.s_addr = inet_addr ("234.5.6.7");
connect (s, (SOCKADDR *)&sasession, sizeof(sasession));
return dwRet;
}
I get error code 10044 (Socket type not supported) when i try to create the socket. How do I enable the use of PGM?
I'm currently working on Windows 7 with MSMQ installed.
EDIT
This is the msdn site I read up on.
Found the solution, the MSMQ wasn´t properly installed. In order for it to include all features (Multicast Support) all the subfolders had to be explicitly checked as shown in the picture below.
Related
I am testing getnameinfo on Windows 11 with the following simple code. The network device name shows up in the router device table and also with a network scanner app on my phone.
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdio.h>
// link with ws2_32.lib
#pragma comment(lib, "Ws2_32.lib")
int __cdecl main(int argc, char** argv)
{
//-----------------------------------------
// Declare and initialize variables
WSADATA wsaData = { 0 };
int iResult = 0;
DWORD dwRetval;
struct sockaddr_in saGNI;
char hostname[NI_MAXHOST];
char servInfo[NI_MAXSERV];
u_short port = 27015;
// Validate the parameters
if (argc != 2) {
printf("usage: %s IPv4 address\n", argv[0]);
printf(" to return hostname\n");
printf(" %s 127.0.0.1\n", argv[0]);
return 1;
}
// Initialize Winsock
iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (iResult != 0) {
printf("WSAStartup failed: %d\n", iResult);
return 1;
}
//-----------------------------------------
// Set up sockaddr_in structure which is passed
// to the getnameinfo function
saGNI.sin_family = AF_INET;
saGNI.sin_addr.s_addr = inet_addr(argv[1]);
saGNI.sin_port = htons(port);
//-----------------------------------------
// Call getnameinfo
dwRetval = getnameinfo((struct sockaddr*)&saGNI,
sizeof(struct sockaddr),
hostname,
NI_MAXHOST, servInfo, NI_MAXSERV, NI_NAMEREQD);
if (dwRetval != 0) {
printf("getnameinfo failed with error # %ld\n", WSAGetLastError());
return 1;
}
else {
printf("getnameinfo returned hostname = %s\n", hostname);
return 0;
}
}
The function does not return a host name. Is there an mistake in the above code or is there a better/more reliable way of getting the name of the network device?
I've got a program that enumerates all processes with the Toolhelp API. With my Sysinternals Process Explorer I also can see a description of all processes. Is this description coming from the executable ? How do I get its name ?
That's my current code to enumerate the processes:
#include <Windows.h>
#include <TlHelp32.h>
#include <iostream>
#include <vector>
#include <system_error>
#include <memory>
using namespace std;
vector<PROCESSENTRY32W> getAllProcesses();
int main()
{
for( PROCESSENTRY32W &pe : getAllProcesses() )
wcout << pe.szExeFile << endl;
}
using XHANDLE = unique_ptr<void, decltype([]( HANDLE h ) { h && h != INVALID_HANDLE_VALUE && CloseHandle( h ); })>;
vector<PROCESSENTRY32W> getAllProcesses()
{
auto throwSysErr = []() { throw system_error( (int)GetLastError(), system_category(), "error enumerating processes" ); };
vector<PROCESSENTRY32W> processes;
XHANDLE xhSnapshot( CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 ) );
if( xhSnapshot.get() == INVALID_HANDLE_VALUE )
throwSysErr();;
PROCESSENTRY32W pe;
pe.dwSize = sizeof pe;
if( !Process32FirstW( xhSnapshot.get(), &pe ) )
throwSysErr();
for( ; ; )
{
processes.emplace_back( pe );
pe.dwSize = sizeof pe;
if( !Process32NextW( xhSnapshot.get(), &pe ) )
if( GetLastError() == ERROR_NO_MORE_FILES )
break;
else
throwSysErr();
}
return processes;
}
#RemyLebeau 's way with code implement which is adapted from VerQueryValueA document sample. And as OpenProcess states,
If the specified process is the System Idle Process (0x00000000), the
function fails and the last error code is ERROR_INVALID_PARAMETER. If
the specified process is the System process or one of the Client
Server Run-Time Subsystem (CSRSS) processes, this function fails and
the last error code is ERROR_ACCESS_DENIED because their access
restrictions prevent user-level code from opening them.
int main()
{
TCHAR szFile[MAX_PATH] = {};
DWORD dwSize = MAX_PATH;
for (PROCESSENTRY32W& pe : getAllProcesses())
{
wcout << pe.szExeFile << endl;
HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,
FALSE, pe.th32ProcessID);
if (hProcess == NULL)
{
//ErrorExit(TEXT("OpenProcess"));
}
else
{
memset(szFile, 0, MAX_PATH);
dwSize = MAX_PATH;
QueryFullProcessImageName(hProcess,0, szFile,&dwSize);
DWORD s = GetFileVersionInfoSize(szFile,NULL);
if (s != 0)
{
LPVOID lpData = HeapAlloc(GetProcessHeap(), 0, s);
GetFileVersionInfo(szFile,0,s, lpData);
HRESULT hr;
UINT cbTranslate;
struct LANGANDCODEPAGE {
WORD wLanguage;
WORD wCodePage;
} *lpTranslate;
// Read the list of languages and code pages.
VerQueryValue(lpData,
TEXT("\\VarFileInfo\\Translation"),
(LPVOID*)&lpTranslate,
&cbTranslate);
// Read the file description for each language and code page.
LPVOID lpBuffer;
UINT dwBytes;
for (int i = 0; i < (cbTranslate / sizeof(struct LANGANDCODEPAGE)); i++)
{
TCHAR SubBlock[255] = {};
hr = StringCchPrintf(SubBlock, 50,
TEXT("\\StringFileInfo\\%04x%04x\\FileDescription"),
lpTranslate[i].wLanguage,
lpTranslate[i].wCodePage);
if (FAILED(hr))
{
// TODO: write error handler.
}
// Retrieve file description for language and code page "i".
VerQueryValue(lpData,
SubBlock,
&lpBuffer,
&dwBytes);
wcout << (TCHAR*)(lpBuffer) << endl;
}
HeapFree(GetProcessHeap(), 0, lpData);
}
//GetProcessImageFileName(hProcess, szFile, dwSize);
}
}
}
I am trying to replace the Windows Bluetooth pairing. I found some code that was suppose to do this, and I mostly mimiced that code. Although, when I run the code which is below I always get a 258 error code.
Below is the code that does the actual pairing.
#include <stdio.h>
#include <tchar.h>
#include <stdlib.h>
#include <initguid.h>
#include <winsock2.h>
#include <ws2bth.h>
#include <BluetoothAPIs.h>
bool BluetoothAuthCallback(LPVOID pvParam, PBLUETOOTH_AUTHENTICATION_CALLBACK_PARAMS pAuthCallbackParams)
{
DWORD dwRet;
fprintf(stderr, "BluetoothAuthCallback 0x%x\n", pAuthCallbackParams->deviceInfo.Address.ullLong);
dwRet = BluetoothSendAuthenticationResponse(NULL, &(pAuthCallbackParams->deviceInfo), L"1234");
if(dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothSendAuthenticationResponse ret %d\n", dwRet);
ExitProcess(2);
return 1;
}
fprintf(stderr, "BluetoothAuthCallback finish\n");
ExitProcess(0);
return 1;
}
int _tmain(int argc, _TCHAR* argv[])
{
SOCKADDR_BTH sa = { 0 };
int sa_len = sizeof(sa);
DWORD dwRet;
BLUETOOTH_DEVICE_INFO btdi = {0};
HBLUETOOTH_AUTHENTICATION_REGISTRATION hRegHandle = 0;
// initialize windows sockets
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD( 2, 0 );
if( WSAStartup( wVersionRequested, &wsaData ) != 0 ) {
ExitProcess(2);
}
// parse the specified Bluetooth address
if( argc < 2 ) {
fprintf(stderr, "usage: rfcomm-client <addr>\n"
"\n addr must be in the form (XX:XX:XX:XX:XX:XX)");
ExitProcess(2);
}
if( SOCKET_ERROR == WSAStringToAddress( argv[1], AF_BTH,
NULL, (LPSOCKADDR) &sa, &sa_len ) ) {
ExitProcess(2);
}
btdi.dwSize = sizeof(BLUETOOTH_DEVICE_INFO);
btdi.Address.ullLong = sa.btAddr;
btdi.ulClassofDevice = 0;
btdi.fConnected = false;
btdi.fRemembered = false;
btdi.fAuthenticated = false;
dwRet = BluetoothRegisterForAuthenticationEx(&btdi, &hRegHandle, (PFN_AUTHENTICATION_CALLBACK_EX)&BluetoothAuthCallback, NULL);
if(dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothRegisterForAuthenticationEx ret %d\n", dwRet);
ExitProcess(2);
}
dwRet = BluetoothAuthenticateDeviceEx(NULL, NULL, &btdi, NULL,MITMProtectionNotRequired);
if(dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothAuthenticateDevice ret %d\n", dwRet);
ExitProcess(2);
}
Sleep(1000);
fprintf(stderr, "pairing finish\n");
ExitProcess(0);
return 0;
}
Below this is how I find the address to pass into the pairing application.
// BluetoothAddressFinder.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <initguid.h>
#include <winsock2.h>
#include <ws2bth.h>
#include <BluetoothAPIs.h>
int _tmain(int argc, _TCHAR* argv[])
{
BLUETOOTH_RADIO_INFO m_bt_info = {sizeof(BLUETOOTH_RADIO_INFO),0,};
BLUETOOTH_FIND_RADIO_PARAMS m_bt_find_radio = {sizeof(BLUETOOTH_FIND_RADIO_PARAMS)};
BLUETOOTH_DEVICE_INFO m_device_info = {sizeof(BLUETOOTH_DEVICE_INFO),0,};
BLUETOOTH_DEVICE_SEARCH_PARAMS m_search_params = {
sizeof(BLUETOOTH_DEVICE_SEARCH_PARAMS),
1, 0,
1,1,1,15,NULL
};
HANDLE m_radio = NULL;
HBLUETOOTH_RADIO_FIND m_bt = NULL;
HBLUETOOTH_DEVICE_FIND m_bt_dev = NULL;
int m_radio_id;
DWORD mbtinfo_ret;
int tempNumberOfDevices = 0;
m_bt = BluetoothFindFirstRadio(&m_bt_find_radio, &m_radio);
m_radio_id = 0;
do {
// Then get the radio device info....
mbtinfo_ret = BluetoothGetRadioInfo(m_radio, &m_bt_info);
// If there was an issue with the current radio check the next radio
if(mbtinfo_ret != ERROR_SUCCESS)
continue;
m_search_params.hRadio = m_radio;
ZeroMemory(&m_device_info, sizeof(BLUETOOTH_DEVICE_INFO));
m_device_info.dwSize = sizeof(BLUETOOTH_DEVICE_INFO);
// Next for every radio, get the device
m_bt_dev = BluetoothFindFirstDevice(&m_search_params, &m_device_info);
// Get the device info
do {
tempNumberOfDevices+=1;
fprintf(stdout, "Device name: %S Device Address: %d:%d:%d:%d:%d:%d \n" ,m_device_info.szName,m_device_info.Address.rgBytes[5],m_device_info.Address.rgBytes[4], m_device_info.Address.rgBytes[3], m_device_info.Address.rgBytes[2], m_device_info.Address.rgBytes[1], m_device_info.Address.rgBytes[0] );
} while(BluetoothFindNextDevice(m_bt_dev, &m_device_info));
} while(BluetoothFindNextRadio(&m_bt_find_radio, &m_radio));
}
I spent much time to capture unhandled exceptions in my process (win32) using API so called setunhandledexceptionfilter().
But I haven't captured exception when WER(Windows Error Report - which is well know for DR.watson) is showed.
Is impossible to catch all of exceptions without third-party in my APP?
I think that there is method for handling, but I don't get it.
I am not accustomed to Windows DEV environment. that's why I lost my mental in googling.
Below is my test-case in vc110(Visual Studio 2012).
chat test[65];
int main() {
// after attaching unhandled exception call-back using setunhandledexceptionfilter()
// die point (ACCESS_VIOLATION c0000005)
for (int k=0; k<1000000; k++)
test[k]=65;
My callback isn't called after WER(windows Error Report) occurs. It doesn't work as my intend.
*But strcpy(NULL, "TEST") which is okay (SUCCESS)*
Below is my source code.
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/stat.h>
#include <assert.h>
#include <process.h>
#include <direct.h>
#include <conio.h>
#include <time.h>
#include <Windows.h>
#include <tchar.h>
#include <dbghelp.h>
#include <stdio.h>
#include <crtdbg.h>
#include <WinBase.h>
#pragma comment ( lib, "dbghelp.lib" )
void CreateMiniDump( EXCEPTION_POINTERS* pep );
BOOL CALLBACK MyMiniDumpCallback(
PVOID pParam,
const PMINIDUMP_CALLBACK_INPUT pInput,
PMINIDUMP_CALLBACK_OUTPUT pOutput
);
///////////////////////////////////////////////////////////////////////////////
// Minidump creation function
//
#if 0
LONG WINAPI lpTopLevelExceptionFilter(EXCEPTION_POINTERS* ExceptionInfo);
#endif
void CreateMiniDump( EXCEPTION_POINTERS* pep )
{
time_t t;
struct tm *tinfo;
wchar_t dump_name[128];
HANDLE hFile;
time(&t);
tinfo = localtime(&t);
wcsftime(dump_name, 128, L"MiniDump[%Y%m%d][%H_%M_%S].dmp", tinfo);
// file format MiniDump[YYYYMMDD][HH_MM_SEC]
hFile = CreateFile(dump_name, GENERIC_READ | GENERIC_WRITE,
0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );
if( ( hFile != NULL ) && ( hFile != INVALID_HANDLE_VALUE ) )
{
// Create the minidump
MINIDUMP_EXCEPTION_INFORMATION mdei;
MINIDUMP_CALLBACK_INFORMATION mci;
MINIDUMP_TYPE mdt;
BOOL rv;
mdei.ThreadId = GetCurrentThreadId();
mdei.ExceptionPointers = pep;
mdei.ClientPointers = FALSE;
mci.CallbackRoutine = (MINIDUMP_CALLBACK_ROUTINE)MyMiniDumpCallback;
mci.CallbackParam = 0;
mdt = (MINIDUMP_TYPE)(MiniDumpWithIndirectlyReferencedMemory | MiniDumpScanMemory| MiniDumpWithThreadInfo);
rv = MiniDumpWriteDump( GetCurrentProcess(), GetCurrentProcessId(),
hFile, mdt, (pep != 0) ? &mdei : 0, 0, &mci );
if( !rv )
_tprintf( _T("MiniDumpWriteDump failed. Error: %u \n"), GetLastError() );
else
_tprintf( _T("Minidump created.\n") );
// Close the file
CloseHandle( hFile );
}
else
{
_tprintf( _T("CreateFile failed. Error: %u \n"), GetLastError() );
}
}
///////////////////////////////////////////////////////////////////////////////
// Custom minidump callback
//
BOOL CALLBACK MyMiniDumpCallback(
PVOID pParam,
const PMINIDUMP_CALLBACK_INPUT pInput,
PMINIDUMP_CALLBACK_OUTPUT pOutput
)
{
BOOL bRet = FALSE;
// Check parameters
if( pInput == 0 )
return FALSE;
if( pOutput == 0 )
return FALSE;
// Process the callbacks
switch( pInput->CallbackType )
{
case IncludeModuleCallback:
{
// Include the module into the dump
bRet = TRUE;
}
break;
case IncludeThreadCallback:
{
// Include the thread into the dump
bRet = TRUE;
}
break;
case ModuleCallback:
{
// Does the module have ModuleReferencedByMemory flag set ?
if( !(pOutput->ModuleWriteFlags & ModuleReferencedByMemory) )
{
// No, it does not - exclude it
wprintf( L"Excluding module: %s \n", pInput->Module.FullPath );
pOutput->ModuleWriteFlags &= (~ModuleWriteModule);
}
bRet = TRUE;
}
break;
case ThreadCallback:
{
// Include all thread information into the minidump
bRet = TRUE;
}
break;
case ThreadExCallback:
{
// Include this information
bRet = TRUE;
}
break;
case MemoryCallback:
{
// We do not include any information here -> return FALSE
bRet = FALSE;
}
break;
case CancelCallback:
break;
}
return bRet;
}
LONG WINAPI exception_filter_func(EXCEPTION_POINTERS* pep)
{
if (pep == NULL) {
return EXCEPTION_EXECUTE_HANDLER;
}
if (pep->ExceptionRecord->ExceptionCode == EXCEPTION_STACK_OVERFLOW) {
HANDLE hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)CreateMiniDump, pep, 0, NULL);
WaitForSingleObject(hThread, INFINITE);
CloseHandle(hThread);
} else {
CreateMiniDump(pep);
}
return EXCEPTION_EXECUTE_HANDLER;
}
char test[65];
int main(int argc, char **argv)
{
int k;
SetUnhandledExceptionFilter(exception_filter_func);
// exception occured (ACCESS_VIOLATION)
for (k=0; k<1000000; k++)
test[k]=65;
}
I have a server written in C under Windows, but I can only seem to connect to it from machines that are also connected to the router my computer is connected to. Any ideas why? Here's my code:
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iphlpapi.h>
#include <stdio.h>
#pragma comment(lib,"Ws2_32.lib")
#define PORT "1234"
#define BUFLEN 512
DWORD ErrorMessage(char* msg, int error)
{
printf("ErrorMessage: %s\nCodErr: %d\n", msg, error);
return -1;
}
void PrintArray(char* v, unsigned int len)
{
for(unsigned int i = 0 ; i < len ; i++)
printf("%c",v[i]);
printf("\n");
}
DWORD WINAPI ClientHandler(LPVOID lpParam)
{
SOCKET ClientSocket = *((SOCKET*)lpParam);
char recvbuf[BUFLEN];
int iResult,iSendResult;
do
{
iResult = recv(ClientSocket, recvbuf, BUFLEN, 0);
if(iResult > 0)
{
PrintArray(recvbuf,iResult);
iSendResult = send(ClientSocket, recvbuf, iResult, 0);
if(iSendResult == SOCKET_ERROR)
{
closesocket(ClientSocket);
WSACleanup();
return ErrorMessage("send",WSAGetLastError());
}
}
else if(iResult == 0)
printf("Connection closing...\n");
else
{
closesocket(ClientSocket);
WSACleanup();
return ErrorMessage("recv",WSAGetLastError());
}
}
while(iResult > 0);
return 0;
}
int main()
{
WSADATA wsaData;
int iResult;
iResult = WSAStartup(MAKEWORD(2,2),&wsaData);
if(iResult != 0)
{
printf("WSAStartup failed and with error code: %d\n",iResult);
return ErrorMessage("WSAStartup",GetLastError());
}
struct addrinfo *result = NULL, *ptr = NULL, hints;
memset(&hints,0,sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
iResult = getaddrinfo(NULL,PORT,&hints,&result);
if(iResult != 0)
{
printf("getaddrinfo failed %d\n",iResult);
WSACleanup();
return -1;
}
SOCKET ListenSocket = INVALID_SOCKET;
ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
if(ListenSocket == INVALID_SOCKET)
{
freeaddrinfo(result);
WSACleanup();
return ErrorMessage("socket",WSAGetLastError());
}
iResult = bind(ListenSocket, result->ai_addr, (int)result->ai_addrlen);
if(iResult == SOCKET_ERROR)
{
freeaddrinfo(result);
closesocket(ListenSocket);
WSACleanup();
return ErrorMessage("bind", WSAGetLastError());
}
freeaddrinfo(result);
if(listen(ListenSocket,5) == SOCKET_ERROR)
{
closesocket(ListenSocket);
WSACleanup();
return ErrorMessage("listen",WSAGetLastError());
}
SOCKET ClientSocket = INVALID_SOCKET;
sockaddr sa;
while(true)
{
ClientSocket = accept(ListenSocket, &sa /*NULL*/, NULL);
if(ClientSocket == INVALID_SOCKET)
{
closesocket(ListenSocket);
WSACleanup();
return ErrorMessage("accept",WSAGetLastError());
}
printf("New client arrived...\n");
if(CreateThread(NULL, 0, ClientHandler, &ClientSocket, 0, NULL) == NULL)
ErrorMessage("CreateThread",GetLastError());
}
iResult = shutdown(ClientSocket,SD_BOTH);
if(iResult == SOCKET_ERROR)
{
closesocket(ClientSocket);
closesocket(ListenSocket);
WSACleanup();
return ErrorMessage("shutsown",WSAGetLastError());
}
closesocket(ListenSocket);
WSACleanup();
return 0;
}
I can't follow your code, but usually I use bind with htons. In your code, it's not obvious how you convert your string "1234" into a numeric value. I wrote a very crude simple Web Server on port 1234 that just serves out a dummy "Hello World" page. All validation has been removed to keep the example short:
#include "stdafx.h"
#include <tchar.h>
#include <windows.h>
#include <winsock.h>
#pragma comment(lib, "wsock32.lib")
int _tmain(int argc, _TCHAR* argv[])
{
WSADATA wsaData = {0};
WSAStartup(0x202, &wsaData);
SOCKET serverSocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
SOCKADDR_IN sin = {0};
sin.sin_family = PF_INET;
sin.sin_port = htons(1234);
sin.sin_addr.s_addr = INADDR_ANY;
bind(serverSocket, (LPSOCKADDR) &sin, sizeof(sin));
listen(serverSocket, 1);
SOCKET clientSocket = accept(serverSocket, NULL, NULL);
while (clientSocket != INVALID_SOCKET)
{
char request[1024] = {0};
recv(clientSocket, request, 1024, 0);
static char html[] =
"HTTP/1.1 200 OK\n"
"Content-Type: text/html\n"
"\n"
"<HTML><HEAD><TITLE>Hello World!</TITLE></HEAD><BODY>Hello World!</BODY></HTML>\n\n";
send(clientSocket, html, sizeof(html), 0);
closesocket(clientSocket);
clientSocket = accept(serverSocket, NULL, NULL);
}
closesocket(serverSocket);
WSACleanup();
return 0;
}
The problem is not in your program. The problem is in the configuration of your router.
Try to connect to some other TCP/IP service on your computer from outside.