高手请指教！客户端如何在局域网中搜索服务器？

lishuiping 2006-04-18 06:33:16

比如在一个局域网中，一台电脑启动服务器，端口为8000。客户端如何去获取创建服务器的电脑的IP和端口呢？
BOOL WINAPI EnumerateFunc(HWND hwnd,
HDC hdc,
LPNETRESOURCE lpnr)
{
DWORD dwResult, dwResultEnum;
HANDLE hEnum;
DWORD cbBuffer = 16384; // 16K is a good size
DWORD cEntries = -1; // enumerate all possible entries
LPNETRESOURCE lpnrLocal; // pointer to enumerated structures
DWORD i;
//
// Call the WNetOpenEnum function to begin the enumeration.
//
dwResult = WNetOpenEnum(RESOURCE_GLOBALNET, // all network resources
RESOURCETYPE_ANY, // all resources
0, // enumerate all resources
lpnr, // NULL first time the function is called
&hEnum); // handle to the resource

if (dwResult != NO_ERROR)
{
//
// Process errors with an application-defined error handler.
//
NetErrorHandler(hwnd, dwResult, (LPSTR)"WNetOpenEnum");
return FALSE;
}
//
// Call the GlobalAlloc function to allocate resources.
//
lpnrLocal = (LPNETRESOURCE) GlobalAlloc(GPTR, cbBuffer);

do
{
//
// Initialize the buffer.
//
ZeroMemory(lpnrLocal, cbBuffer);
//
// Call the WNetEnumResource function to continue
// the enumeration.
//
dwResultEnum = WNetEnumResource(hEnum, // resource handle
¢ries, // defined locally as -1
lpnrLocal, // LPNETRESOURCE
&cbBuffer); // buffer size
//
// If the call succeeds, loop through the structures.
//
if (dwResultEnum == NO_ERROR)
{
for(i = 0; i < cEntries; i++)
{
// Call an application-defined function to
// display the contents of the NETRESOURCE structures.
//
DisplayStruct(hdc, &lpnrLocal[i]);

// If the NETRESOURCE structure represents a container resource,
// call the EnumerateFunc function recursively.

if(RESOURCEUSAGE_CONTAINER == (lpnrLocal[i].dwUsage
& RESOURCEUSAGE_CONTAINER))
if(!EnumerateFunc(hwnd, hdc, &lpnrLocal[i]))
TextOut(hdc, 10, 10, "EnumerateFunc returned FALSE.", 29);
}
}
// Process errors.
//
else if (dwResultEnum != ERROR_NO_MORE_ITEMS)
{
NetErrorHandler(hwnd, dwResultEnum, (LPSTR)"WNetEnumResource");
break;
}
}
//
// End do.
//
while(dwResultEnum != ERROR_NO_MORE_ITEMS);
//
// Call the GlobalFree function to free the memory.
//
GlobalFree((HGLOBAL)lpnrLocal);
//
// Call WNetCloseEnum to end the enumeration.
//
dwResult = WNetCloseEnum(hEnum);

if(dwResult != NO_ERROR)
{
//
// Process errors.
//
NetErrorHandler(hwnd, dwResult, (LPSTR)"WNetCloseEnum");
return FALSE;
}

return TRUE;
}

我看了这段代码之后感觉只是用来判断是否为服务器？但是在判断完之后他就没有任何操作了，就是说判断出一台电脑作为服务器，他是怎么把这电脑的IP和端口发送给客户端呢？

请高手指点一下！

...全文