public async Task <ReverseProxyResponse> Send(ICommunicationContext context, string target)
{
var proxyTargetUri = GetProxyTargetUri(context.PipelineData.SelectedResource.Results.Single(), target);
var requestMessage = new HttpRequestMessage(new HttpMethod(context.Request.HttpMethod), proxyTargetUri)
{
Version = new Version(2, 0)
};
PrepareRequestBody(context, requestMessage);
PrepareRequestHeaders(context, requestMessage, _convertForwardedHeaders);
var viaIdentifier = AppendViaHeaderToRequest(context, requestMessage);
var cts = new CancellationTokenSource();
cts.CancelAfter(_timeout);
var timeoutToken = cts.Token;
ReverseProxyResponse reverseProxyResponse;
try
{
_onSend?.Invoke(context, requestMessage);
var httpClient = _httpClient(requestMessage.RequestUri.Host);
var responseMessage = await httpClient.SendAsync(
requestMessage,
HttpCompletionOption.ResponseHeadersRead,
timeoutToken
);
reverseProxyResponse = new ReverseProxyResponse(requestMessage, responseMessage, viaIdentifier);
cts.Dispose();
}
catch (TaskCanceledException e) when(timeoutToken.IsCancellationRequested || e.CancellationToken == timeoutToken)
{
// Note we check both cancellation token because mono/fullfx/core don't have the same behaviour
reverseProxyResponse = new ReverseProxyResponse(requestMessage, via: null, error: e, statusCode: 504);
}
catch (HttpRequestException e)
{
context.ServerErrors.Add(new Error {
Exception = e, Title = $"Reverse Proxy failed to connect."
});
reverseProxyResponse = new ReverseProxyResponse(requestMessage, via: null, error: e, statusCode: 502);
}
_onProxyResponse?.Invoke(reverseProxyResponse);
return(reverseProxyResponse);
}
public ReverseProxyOperationResult(ReverseProxyResponse response)
: base(response.StatusCode)
{
ResponseResource = response;
}
