在C++的WinHttp庫(kù)中管理會(huì)話,需要遵循以下步驟:
#include<Windows.h>
#include <winhttp.h>
#pragma comment(lib, "winhttp")
WinHttpOpen
函數(shù)初始化WinHttp會(huì)話。這將返回一個(gè)HINTERNET
類型的句柄,表示該會(huì)話。HINTERNET hSession = WinHttpOpen(L"MyUserAgent", WINHTTP_ACCESS_TYPE_DEFAULT_PROXY, WINHTTP_NO_PROXY_NAME, WINHTTP_NO_PROXY_BYPASS, 0);
if (!hSession) {
// 錯(cuò)誤處理
}
WinHttpConnect
函數(shù)連接到目標(biāo)服務(wù)器。這將返回一個(gè)HINTERNET
類型的句柄,表示與服務(wù)器的連接。HINTERNET hConnect = WinHttpConnect(hSession, L"example.com", INTERNET_DEFAULT_HTTPS_PORT, 0);
if (!hConnect) {
// 錯(cuò)誤處理
}
WinHttpOpenRequest
函數(shù)打開(kāi)一個(gè)請(qǐng)求并指定HTTP方法(GET、POST等)。HINTERNET hRequest = WinHttpOpenRequest(hConnect, L"GET", L"/path", NULL, WINHTTP_NO_REFERER, WINHTTP_DEFAULT_ACCEPT_TYPES, WINHTTP_FLAG_SECURE);
if (!hRequest) {
// 錯(cuò)誤處理
}
WinHttpSendRequest
函數(shù)發(fā)送請(qǐng)求。BOOL bResult = WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0);
if (!bResult) {
// 錯(cuò)誤處理
}
WinHttpReceiveResponse
函數(shù)接收服務(wù)器的響應(yīng)。bResult = WinHttpReceiveResponse(hRequest, NULL);
if (!bResult) {
// 錯(cuò)誤處理
}
WinHttpQueryDataAvailable
和WinHttpReadData
函數(shù)讀取響應(yīng)內(nèi)容。DWORD dwSize = 0;
do {
DWORD dwDownloaded = 0;
char* pBuffer = new char[dwSize + 1];
ZeroMemory(pBuffer, dwSize + 1);
if (!WinHttpReadData(hRequest, (LPVOID)pBuffer, dwSize, &dwDownloaded)) {
// 錯(cuò)誤處理
}
delete[] pBuffer;
} while (dwSize > 0);
WinHttpCloseHandle(hRequest);
WinHttpCloseHandle(hConnect);
WinHttpCloseHandle(hSession);
這些步驟展示了如何在C++ WinHttp中管理會(huì)話。根據(jù)實(shí)際需求,可能需要對(duì)這些步驟進(jìn)行調(diào)整。