C++ CHttpRanges::Clear方法代码示例

bool CWebServer::GetRequestedRanges(struct MHD_Connection *connection, uint64_t totalLength, CHttpRanges &ranges)
{
  ranges.Clear();

  if (connection == NULL)
    return false;

  return ranges.Parse(GetRequestHeaderValue(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_RANGE), totalLength);
}

bool HTTPRequestHandlerUtils::GetRequestedRanges(struct MHD_Connection *connection, uint64_t totalLength, CHttpRanges &ranges)
{
  ranges.Clear();

  if (connection == nullptr)
    return false;

  return ranges.Parse(GetRequestHeaderValue(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_RANGE), totalLength);
}

bool CWebServer::IsRequestRanged(const HTTPRequest& request, const CDateTime &lastModified) const
{
  // parse the Range header and store it in the request object
  CHttpRanges ranges;
  bool ranged = ranges.Parse(HTTPRequestHandlerUtils::GetRequestHeaderValue(request.connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_RANGE));

  // handle If-Range header but only if the Range header is present
  if (ranged && lastModified.IsValid())
  {
    std::string ifRange = HTTPRequestHandlerUtils::GetRequestHeaderValue(request.connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_IF_RANGE);
    if (!ifRange.empty() && lastModified.IsValid())
    {
      CDateTime ifRangeDate;
      ifRangeDate.SetFromRFC1123DateTime(ifRange);

      // check if the last modification is newer than the If-Range date
      // if so we have to server the whole file instead
      if (lastModified.GetAsUTCDateTime() > ifRangeDate)
        ranges.Clear();
    }
  }

  return !ranges.IsEmpty();
}

//.........这里部分代码省略.........
              CDateTime ifUnmodifiedSinceDate;
              // handle If-Modified-Since (but only if the response is cacheable)
              if (cacheable &&
                ifModifiedSinceDate.SetFromRFC1123DateTime(ifModifiedSince) &&
                lastModified.GetAsUTCDateTime() <= ifModifiedSinceDate)
              {
                struct MHD_Response *response = MHD_create_response_from_data(0, NULL, MHD_NO, MHD_NO);
                if (response == NULL)
                {
                  CLog::Log(LOGERROR, "CWebServer: failed to create a HTTP 304 response");
                  return MHD_NO;
                }

                return FinalizeRequest(handler, MHD_HTTP_NOT_MODIFIED, response);
              }
              // handle If-Unmodified-Since
              else if (ifUnmodifiedSinceDate.SetFromRFC1123DateTime(ifUnmodifiedSince) &&
                lastModified.GetAsUTCDateTime() > ifUnmodifiedSinceDate)
                return SendErrorResponse(connection, MHD_HTTP_PRECONDITION_FAILED, methodType);
            }

            // handle If-Range header but only if the Range header is present
            if (ranged && lastModified.IsValid())
            {
              std::string ifRange = GetRequestHeaderValue(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_IF_RANGE);
              if (!ifRange.empty() && lastModified.IsValid())
              {
                CDateTime ifRangeDate;
                ifRangeDate.SetFromRFC1123DateTime(ifRange);

                // check if the last modification is newer than the If-Range date
                // if so we have to server the whole file instead
                if (lastModified.GetAsUTCDateTime() > ifRangeDate)
                  ranges.Clear();
              }
            }

            // pass the requested ranges on to the request handler
            handler->SetRequestRanged(!ranges.IsEmpty());
          }
        }
        // if we got a POST request we need to take care of the POST data
        else if (methodType == POST)
        {
          conHandler->requestHandler = handler;

          // get the content-type of the POST data
          std::string contentType = GetRequestHeaderValue(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_CONTENT_TYPE);
          if (!contentType.empty())
          {
            // if the content-type is application/x-ww-form-urlencoded or multipart/form-data we can use MHD's POST processor
            if (StringUtils::EqualsNoCase(contentType, MHD_HTTP_POST_ENCODING_FORM_URLENCODED) ||
                StringUtils::EqualsNoCase(contentType, MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA))
            {
              // Get a new MHD_PostProcessor
              conHandler->postprocessor = MHD_create_post_processor(connection, MAX_POST_BUFFER_SIZE, &CWebServer::HandlePostField, (void*)conHandler.get());

              // MHD doesn't seem to be able to handle this post request
              if (conHandler->postprocessor == NULL)
              {
                CLog::Log(LOGERROR, "CWebServer: unable to create HTTP POST processor for %s", url);

                delete conHandler->requestHandler;

                return SendErrorResponse(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, methodType);
              }