{

auto input_stream = request.getStream();

if (input_stream->isCanceled())

{

response.setKeepAlive(false);

LOG_WARNING(getLogger("sendExceptionToHTTPClient"), "Cannot read remaining request body during exception handling. The request read buffer is canceled. Set keep alive to false on the response.");

return;

}

LOG_DEBUG(getLogger("sendExceptionToHTTPClient"), "Draining connection ({}, Transfer-Encoding: {}, Content-Length: {}, Keep-Alive: {})",

request.getVersion(), request.getTransferEncoding(), request.getContentLength(), request.getKeepAlive());

/// If HTTP method is POST and Keep-Alive is turned on, we should try to read the whole request body

/// to avoid reading part of the current request body in the next request.

/// Or we have to close connection after this request.

if (request.getMethod() == Poco::Net::HTTPRequest::HTTP_POST

&& (request.getChunkedTransferEncoding() || request.hasContentLength())

&& response.getKeepAlive())

{

/// If the client expects 100 Continue, but we never sent it, don't attempt to read the body and

/// don't reuse the connection.

if (request.getExpectContinue() && response.getStatus() != Poco::Net::HTTPResponse::HTTP_CONTINUE)

{

response.setKeepAlive(false);

}

else

{

try

{

if (!input_stream->eof())

{

size_t ignored_bytes = input_stream->ignoreAll();

LOG_DEBUG(getLogger("sendExceptionToHTTPClient"), "Drained {} bytes", ignored_bytes);

}

}

catch (...)

{

tryLogCurrentException("sendExceptionToHTTPClient", "Cannot read remaining request body during exception handling. Set keep alive to false on the response.");

response.setKeepAlive(false);

}

}

}