10

我似乎对此有疑问,并且本着可以被其他人引用的通用问题的精神,我正在寻找一个使用 SSL 的好例子。

更具体地说,我从 WinHttpSendRequest 收到错误 0x00002F8F,即 ERROR_INTERNET_DECODING_FAILED(这表明它是一个证书错误)。我已经在这台机器上导入了证书,并且能够在 IE 中拉出页面而不会出现证书错误。

我正在使用的代码在这里。

TLDR:您如何将 WinHTTP 与自签名证书一起使用?

4

1 回答 1

14

对于 WinHTTP,为了接受/允许 SSL 验证失败,您必须首先发出请求并允许它失败,然后禁用安全检查并重试请求句柄上的操作。类似于以下内容:

// Certain circumstances dictate that we may need to loop on WinHttpSendRequest
// hence the do/while
do
{
    retry = false;
    result = NO_ERROR;

    // no retry on success, possible retry on failure
    if(WinHttpSendRequest(
        mHRequest,
        WINHTTP_NO_ADDITIONAL_HEADERS,
        0,
        optionalData,
        optionalLength,
        totalLength,
        NULL
        ) == FALSE)
    {
        result = GetLastError();

        // (1) If you want to allow SSL certificate errors and continue
        // with the connection, you must allow and initial failure and then
        // reset the security flags. From: "HOWTO: Handle Invalid Certificate
        // Authority Error with WinInet"
        // http://support.microsoft.com/default.aspx?scid=kb;EN-US;182888
        if(result == ERROR_WINHTTP_SECURE_FAILURE)
        {
            DWORD dwFlags =
                SECURITY_FLAG_IGNORE_UNKNOWN_CA |
                SECURITY_FLAG_IGNORE_CERT_WRONG_USAGE |
                SECURITY_FLAG_IGNORE_CERT_CN_INVALID |
                SECURITY_FLAG_IGNORE_CERT_DATE_INVALID;

            if(WinHttpSetOption(
                mHRequest,
                WINHTTP_OPTION_SECURITY_FLAGS,
                &dwFlags,
                sizeof(dwFlags)))
            {
                retry = true;
            }
        }
        // (2) Negotiate authorization handshakes may return this error
        // and require multiple attempts
        // http://msdn.microsoft.com/en-us/library/windows/desktop/aa383144%28v=vs.85%29.aspx
        else if(result == ERROR_WINHTTP_RESEND_REQUEST)
        {
            retry = true;
        }
    }
} while(retry);
于 2013-10-30T20:45:03.490 回答