/// <summary>
/// Add a header to this request.
/// </summary>
/// <param name="builder">The builder we're working on.</param>
/// <param name="name">The header name to add to this request.</param>
/// <param name="value">The header value (for <paramref name="name"/>) to add to this request.</param>
/// <returns>The request builder for chaining.</returns>
public static IRequestBuilder AddHeader(this IRequestBuilder builder, string name, string value)
{
if (!string.IsNullOrEmpty(name))
{
try
{
builder.Message.Headers.Add(name, value);
}
catch (Exception e)
{
var wrapper = new HttpClientException("Unable to set header: " + name + " to '" + value + "'", builder.Message.RequestUri, e);
builder.GetSettings().OnException(builder, new HttpExceptionArgs(builder, wrapper));
}
}
return(builder);
}
/// <summary>
/// Adds headers to this request.
/// </summary>
/// <param name="builder">The builder we're working on.</param>
/// <param name="headers">The headers to add to this request.</param>
/// <returns>The request builder for chaining.</returns>
public static IRequestBuilder AddHeaders(this IRequestBuilder builder, IDictionary <string, string> headers)
{
if (headers == null)
{
return(builder);
}
var pHeaders = builder.Message.Headers;
foreach (var kv in headers)
{
try
{
//pHeaders.Add(kv.Key, kv.Value);
switch (kv.Key)
{
// certain headers must be accessed via the named property on the WebRequest
case "Accept": pHeaders.Accept.ParseAdd(kv.Value); break;
// case "Connection": break;
// case "proxy-connection": break;
// case "Proxy-Connection": break;
// case "Content-Length": break;
case "Content-Type": builder.Message.Content.Headers.ContentType = new MediaTypeHeaderValue(kv.Value); break;
// case "Host": break;
// case "If-Modified-Since": pHeaders.IfModifiedSince = DateTime.ParseExact(kv.Value, "R", CultureInfo.InvariantCulture); break;
// case "Referer": pHeaders.Referrer = new Uri(kv.Value); break;
// case "User-Agent": pHeaders.UserAgent.ParseAdd("Stack Exchange (Proxy)"); break;
default: pHeaders.Add(kv.Key, kv.Value); break;
}
}
catch (Exception e)
{
var wrapper = new HttpClientException("Unable to set header: " + kv.Key + " to '" + kv.Value + "'", builder.Message.RequestUri, e);
builder.GetSettings().OnException(builder, new HttpExceptionArgs(builder, wrapper));
}
}
return(builder);
}
internal static async Task <HttpCallResponse <T> > SendAsync <T>(IRequestBuilder <T> builder, HttpMethod method, CancellationToken cancellationToken = default)
{
// default to global settings
var settings = builder.GetSettings();
settings.OnBeforeSend(builder, builder.Inner);
var request = builder.Inner.Message;
request.Method = method;
Exception exception = null;
HttpResponseMessage response = null;
try
{
using (settings.ProfileRequest?.Invoke(request))
using (request)
{
// Get the pool
var pool = builder.Inner.ClientPool ?? settings.ClientPool;
var completionOption = builder.Inner.BufferResponse ? HttpCompletionOption.ResponseContentRead : HttpCompletionOption.ResponseHeadersRead;
// Send the request
using (response = await pool.Get(builder.Inner).SendAsync(request, completionOption, cancellationToken))
{
// If we haven't ignored it, throw and we'll log below
// This isn't ideal cntrol flow behavior, but it's the only way to get proper stacks
if (!response.IsSuccessStatusCode && !builder.Inner.IgnoredResponseStatuses.Contains(response.StatusCode))
{
exception = new HttpClientException($"Response code was {(int)response.StatusCode} ({response.StatusCode}) from {response.RequestMessage.RequestUri}: {response.ReasonPhrase}", response.StatusCode, response.RequestMessage.RequestUri);
stackTraceString.SetValue(exception, new StackTrace(true).ToString());
}
else
{
var data = await builder.Handler(response);
return(HttpCallResponse.Create(response, data));
}
}
}
}
catch (OperationCanceledException ex)
{
exception = cancellationToken.IsCancellationRequested
? new HttpClientException("HttpClient request cancelled by token request.", builder.Inner.Message.RequestUri, ex)
: new HttpClientException("HttpClient request timed out. Timeout: " + builder.Inner.Timeout.TotalMilliseconds.ToString("N0") + "ms", builder.Inner.Message.RequestUri, ex);
}
catch (Exception ex)
{
exception = ex;
}
// Use the response if we have it - request if not
var result = response != null
? HttpCallResponse.Create <T>(response, exception)
: HttpCallResponse.Create <T>(request, exception);
// Add caller member bits to the exception data regardless of where it's eventually logged.
(builder.Inner as HttpBuilder)?.AddExceptionData(exception);
// If we're told not to log at all, don't log
if (builder.Inner.LogErrors)
{
var args = new HttpExceptionArgs(builder.Inner, exception);
builder.Inner.OnBeforeExceptionLog(args);
if (!args.AbortLogging)
{
settings.OnException(builder, args);
}
}
return(result);
}