public void RunHandler()
{
HTTPManager.Logger.Information("HTTP1Handler", string.Format("[{0}] started processing request '{1}'", this, this.conn.CurrentRequest.CurrentUri.ToString()), this.Context, this.conn.CurrentRequest.Context);
System.Threading.Thread.CurrentThread.Name = "BestHTTP.HTTP1 R&W";
HTTPConnectionStates proposedConnectionState = HTTPConnectionStates.Processing;
bool resendRequest = false;
try
{
if (this.conn.CurrentRequest.IsCancellationRequested)
{
return;
}
#if !BESTHTTP_DISABLE_CACHING
// Setup cache control headers before we send out the request
if (!this.conn.CurrentRequest.DisableCache)
{
HTTPCacheService.SetHeaders(this.conn.CurrentRequest);
}
#endif
// Write the request to the stream
this.conn.CurrentRequest.QueuedAt = DateTime.MinValue;
this.conn.CurrentRequest.ProcessingStarted = DateTime.UtcNow;
this.conn.CurrentRequest.SendOutTo(this.conn.connector.Stream);
this.conn.CurrentRequest.Timing.Add(TimingEventNames.Request_Sent);
if (this.conn.CurrentRequest.IsCancellationRequested)
{
return;
}
this.conn.CurrentRequest.OnCancellationRequested += OnCancellationRequested;
// Receive response from the server
bool received = Receive(this.conn.CurrentRequest);
this.conn.CurrentRequest.Timing.Add(TimingEventNames.Response_Received);
if (this.conn.CurrentRequest.IsCancellationRequested)
{
return;
}
if (!received && this.conn.CurrentRequest.Retries < this.conn.CurrentRequest.MaxRetries)
{
proposedConnectionState = HTTPConnectionStates.Closed;
this.conn.CurrentRequest.Retries++;
resendRequest = true;
return;
}
ConnectionHelper.HandleResponse(this.conn.ToString(), this.conn.CurrentRequest, out resendRequest, out proposedConnectionState, ref this._keepAlive, this.conn.Context, this.conn.CurrentRequest.Context);
}
catch (TimeoutException e)
{
this.conn.CurrentRequest.Response = null;
// Do nothing here if Abort() got called on the request, its State is already set.
if (!this.conn.CurrentRequest.IsTimedOut)
{
// We will try again only once
if (this.conn.CurrentRequest.Retries < this.conn.CurrentRequest.MaxRetries)
{
this.conn.CurrentRequest.Retries++;
resendRequest = true;
}
else
{
this.conn.CurrentRequest.Exception = e;
this.conn.CurrentRequest.State = HTTPRequestStates.ConnectionTimedOut;
}
}
proposedConnectionState = HTTPConnectionStates.Closed;
}
catch (Exception e)
{
if (this.ShutdownType == ShutdownTypes.Immediate)
{
return;
}
string exceptionMessage = string.Empty;
if (e == null)
{
exceptionMessage = "null";
}
else
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
Exception exception = e;
int counter = 1;
while (exception != null)
{
sb.AppendFormat("{0}: {1} {2}", counter++.ToString(), exception.Message, exception.StackTrace);
exception = exception.InnerException;
if (exception != null)
{
sb.AppendLine();
}
}
exceptionMessage = sb.ToString();
}
HTTPManager.Logger.Verbose("HTTP1Handler", exceptionMessage, this.Context, this.conn.CurrentRequest.Context);
#if !BESTHTTP_DISABLE_CACHING
if (this.conn.CurrentRequest.UseStreaming)
{
HTTPCacheService.DeleteEntity(this.conn.CurrentRequest.CurrentUri);
}
#endif
// Something gone bad, Response must be null!
this.conn.CurrentRequest.Response = null;
// Do nothing here if Abort() got called on the request, its State is already set.
if (!this.conn.CurrentRequest.IsCancellationRequested)
{
this.conn.CurrentRequest.Exception = e;
this.conn.CurrentRequest.State = HTTPRequestStates.Error;
}
proposedConnectionState = HTTPConnectionStates.Closed;
}
finally
{
this.conn.CurrentRequest.OnCancellationRequested -= OnCancellationRequested;
// Exit ASAP
if (this.ShutdownType != ShutdownTypes.Immediate)
{
if (this.conn.CurrentRequest.IsCancellationRequested)
{
// we don't know what stage the request is canceled, we can't safely reuse the tcp channel.
proposedConnectionState = HTTPConnectionStates.Closed;
this.conn.CurrentRequest.Response = null;
// The request's State already set, or going to be set soon in RequestEvents.cs.
//this.conn.CurrentRequest.State = this.conn.CurrentRequest.IsTimedOut ? HTTPRequestStates.TimedOut : HTTPRequestStates.Aborted;
}
else if (resendRequest)
{
// Here introducing a ClosedResendRequest connection state, where we have to process the connection's state change to Closed
// than we have to resend the request.
// If we would send the Resend request here, than a few lines below the Closed connection state change,
// request events are processed before connection events (just switching the EnqueueRequestEvent and EnqueueConnectionEvent wouldn't work
// see order of ProcessQueues in HTTPManager.OnUpdate!) and it would pick this very same closing/closed connection!
if (proposedConnectionState == HTTPConnectionStates.Closed)
{
ConnectionEventHelper.EnqueueConnectionEvent(new ConnectionEventInfo(this.conn, this.conn.CurrentRequest));
}
else
{
RequestEventHelper.EnqueueRequestEvent(new RequestEventInfo(this.conn.CurrentRequest, RequestEvents.Resend));
}
}
else if (this.conn.CurrentRequest.Response != null && this.conn.CurrentRequest.Response.IsUpgraded)
{
proposedConnectionState = HTTPConnectionStates.WaitForProtocolShutdown;
}
else if (this.conn.CurrentRequest.State == HTTPRequestStates.Processing)
{
if (this.conn.CurrentRequest.Response != null)
{
this.conn.CurrentRequest.State = HTTPRequestStates.Finished;
}
else
{
this.conn.CurrentRequest.Exception = new Exception(string.Format("[{0}] Remote server closed the connection before sending response header! Previous request state: {1}. Connection state: {2}",
this.ToString(),
this.conn.CurrentRequest.State.ToString(),
this.conn.State.ToString()));
this.conn.CurrentRequest.State = HTTPRequestStates.Error;
proposedConnectionState = HTTPConnectionStates.Closed;
}
}
this.conn.CurrentRequest = null;
if (proposedConnectionState == HTTPConnectionStates.Processing)
{
proposedConnectionState = HTTPConnectionStates.Recycle;
}
if (proposedConnectionState != HTTPConnectionStates.ClosedResendRequest)
{
ConnectionEventHelper.EnqueueConnectionEvent(new ConnectionEventInfo(this.conn, proposedConnectionState));
}
}
}
}
public void RunHandler()
{
HTTPManager.Logger.Information("HTTP1Handler", string.Format("[{0}] started processing request '{1}'", this, this.conn.CurrentRequest.CurrentUri.ToString()));
HTTPConnectionStates proposedConnectionState = HTTPConnectionStates.Processing;
bool resendRequest = false;
try
{
if (this.conn.CurrentRequest.IsCancellationRequested)
{
return;
}
#if !BESTHTTP_DISABLE_CACHING
// Try load the full response from an already saved cache entity.
// If the response could be loaded completely, we can skip connecting (if not already) and a full round-trip time to the server.
if (HTTPCacheService.IsCachedEntityExpiresInTheFuture(this.conn.CurrentRequest) && ConnectionHelper.TryLoadAllFromCache(this.ToString(), this.conn.CurrentRequest))
{
HTTPManager.Logger.Information("HTTP1Handler", string.Format("[{0}] Request could be fully loaded from cache! '{1}'", this, this.conn.CurrentRequest.CurrentUri.ToString()));
return;
}
#endif
if (this.conn.CurrentRequest.IsCancellationRequested)
{
return;
}
#if !BESTHTTP_DISABLE_CACHING
// Setup cache control headers before we send out the request
if (!this.conn.CurrentRequest.DisableCache)
{
HTTPCacheService.SetHeaders(this.conn.CurrentRequest);
}
#endif
// Write the request to the stream
this.conn.CurrentRequest.SendOutTo(this.conn.connector.Stream);
if (this.conn.CurrentRequest.IsCancellationRequested)
{
return;
}
// Receive response from the server
bool received = Receive(this.conn.CurrentRequest);
if (this.conn.CurrentRequest.IsCancellationRequested)
{
return;
}
if (!received && this.conn.CurrentRequest.Retries < this.conn.CurrentRequest.MaxRetries)
{
proposedConnectionState = HTTPConnectionStates.Closed;
this.conn.CurrentRequest.Retries++;
resendRequest = true;
return;
}
ConnectionHelper.HandleResponse(this.conn.ToString(), this.conn.CurrentRequest, out resendRequest, out proposedConnectionState, ref this._keepAlive);
}
catch (TimeoutException e)
{
this.conn.CurrentRequest.Response = null;
// We will try again only once
if (this.conn.CurrentRequest.Retries < this.conn.CurrentRequest.MaxRetries)
{
this.conn.CurrentRequest.Retries++;
resendRequest = true;
}
else
{
this.conn.CurrentRequest.Exception = e;
this.conn.CurrentRequest.State = HTTPRequestStates.ConnectionTimedOut;
}
proposedConnectionState = HTTPConnectionStates.Closed;
}
catch (Exception e)
{
if (this.ShutdownType == ShutdownTypes.Immediate)
{
return;
}
#if !BESTHTTP_DISABLE_CACHING
if (this.conn.CurrentRequest.UseStreaming)
{
HTTPCacheService.DeleteEntity(this.conn.CurrentRequest.CurrentUri);
}
#endif
// Something gone bad, Response must be null!
this.conn.CurrentRequest.Response = null;
if (!this.conn.CurrentRequest.IsCancellationRequested)
{
this.conn.CurrentRequest.Exception = e;
this.conn.CurrentRequest.State = HTTPRequestStates.Error;
}
proposedConnectionState = HTTPConnectionStates.Closed;
}
finally
{
// Exit ASAP
if (this.ShutdownType != ShutdownTypes.Immediate)
{
if (this.conn.CurrentRequest.IsCancellationRequested)
{
// we don't know what stage the request is cancelled, we can't safely reuse the tcp channel.
proposedConnectionState = HTTPConnectionStates.Closed;
this.conn.CurrentRequest.Response = null;
this.conn.CurrentRequest.State = this.conn.CurrentRequest.IsTimedOut ? HTTPRequestStates.TimedOut : HTTPRequestStates.Aborted;
}
else if (resendRequest)
{
RequestEventHelper.EnqueueRequestEvent(new RequestEventInfo(this.conn.CurrentRequest, RequestEvents.Resend));
}
else if (this.conn.CurrentRequest.Response != null && this.conn.CurrentRequest.Response.IsUpgraded)
{
proposedConnectionState = HTTPConnectionStates.WaitForProtocolShutdown;
}
else if (this.conn.CurrentRequest.State == HTTPRequestStates.Processing)
{
if (this.conn.CurrentRequest.Response != null)
{
this.conn.CurrentRequest.State = HTTPRequestStates.Finished;
}
else
{
this.conn.CurrentRequest.Exception = new Exception(string.Format("[{0}] Remote server closed the connection before sending response header! Previous request state: {1}. Connection state: {2}",
this.ToString(),
this.conn.CurrentRequest.State.ToString(),
this.conn.State.ToString()));
this.conn.CurrentRequest.State = HTTPRequestStates.Error;
proposedConnectionState = HTTPConnectionStates.Closed;
}
}
this.conn.CurrentRequest = null;
if (proposedConnectionState == HTTPConnectionStates.Processing)
{
proposedConnectionState = HTTPConnectionStates.Recycle;
}
ConnectionEventHelper.EnqueueConnectionEvent(new ConnectionEventInfo(this.conn, proposedConnectionState));
}
}
}
public void RunHandler()
{
HTTPManager.Logger.Information("HTTP1Handler", string.Format("[{0}] started processing request '{1}'", this, this.conn.CurrentRequest.CurrentUri.ToString()), this.Context, this.conn.CurrentRequest.Context);
HTTPConnectionStates proposedConnectionState = HTTPConnectionStates.Processing;
bool resendRequest = false;
try
{
if (this.conn.CurrentRequest.IsCancellationRequested)
{
return;
}
#if !BESTHTTP_DISABLE_CACHING
// Setup cache control headers before we send out the request
if (!this.conn.CurrentRequest.DisableCache)
{
HTTPCacheService.SetHeaders(this.conn.CurrentRequest);
}
#endif
// Write the request to the stream
this.conn.CurrentRequest.SendOutTo(this.conn.connector.Stream);
if (this.conn.CurrentRequest.IsCancellationRequested)
{
return;
}
this.conn.CurrentRequest.OnCancellationRequested += OnCancellationRequested;
// Receive response from the server
bool received = Receive(this.conn.CurrentRequest);
if (this.conn.CurrentRequest.IsCancellationRequested)
{
return;
}
if (!received && this.conn.CurrentRequest.Retries < this.conn.CurrentRequest.MaxRetries)
{
proposedConnectionState = HTTPConnectionStates.Closed;
this.conn.CurrentRequest.Retries++;
resendRequest = true;
return;
}
ConnectionHelper.HandleResponse(this.conn.ToString(), this.conn.CurrentRequest, out resendRequest, out proposedConnectionState, ref this._keepAlive, this.conn.Context, this.conn.CurrentRequest.Context);
}
catch (TimeoutException e)
{
this.conn.CurrentRequest.Response = null;
// We will try again only once
if (this.conn.CurrentRequest.Retries < this.conn.CurrentRequest.MaxRetries)
{
this.conn.CurrentRequest.Retries++;
resendRequest = true;
}
else
{
this.conn.CurrentRequest.Exception = e;
this.conn.CurrentRequest.State = HTTPRequestStates.ConnectionTimedOut;
}
proposedConnectionState = HTTPConnectionStates.Closed;
}
catch (Exception e)
{
if (this.ShutdownType == ShutdownTypes.Immediate)
{
return;
}
string exceptionMessage = string.Empty;
if (e == null)
{
exceptionMessage = "null";
}
else
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
Exception exception = e;
int counter = 1;
while (exception != null)
{
sb.AppendFormat("{0}: {1} {2}", counter++.ToString(), exception.Message, exception.StackTrace);
exception = exception.InnerException;
if (exception != null)
{
sb.AppendLine();
}
}
exceptionMessage = sb.ToString();
}
HTTPManager.Logger.Verbose("HTTP1Handler", exceptionMessage, this.Context, this.conn.CurrentRequest.Context);
#if !BESTHTTP_DISABLE_CACHING
if (this.conn.CurrentRequest.UseStreaming)
{
HTTPCacheService.DeleteEntity(this.conn.CurrentRequest.CurrentUri);
}
#endif
// Something gone bad, Response must be null!
this.conn.CurrentRequest.Response = null;
if (!this.conn.CurrentRequest.IsCancellationRequested)
{
this.conn.CurrentRequest.Exception = e;
this.conn.CurrentRequest.State = HTTPRequestStates.Error;
}
proposedConnectionState = HTTPConnectionStates.Closed;
}
finally
{
this.conn.CurrentRequest.OnCancellationRequested -= OnCancellationRequested;
// Exit ASAP
if (this.ShutdownType != ShutdownTypes.Immediate)
{
if (this.conn.CurrentRequest.IsCancellationRequested)
{
// we don't know what stage the request is canceled, we can't safely reuse the tcp channel.
proposedConnectionState = HTTPConnectionStates.Closed;
this.conn.CurrentRequest.Response = null;
this.conn.CurrentRequest.State = this.conn.CurrentRequest.IsTimedOut ? HTTPRequestStates.TimedOut : HTTPRequestStates.Aborted;
}
else if (resendRequest)
{
RequestEventHelper.EnqueueRequestEvent(new RequestEventInfo(this.conn.CurrentRequest, RequestEvents.Resend));
}
else if (this.conn.CurrentRequest.Response != null && this.conn.CurrentRequest.Response.IsUpgraded)
{
proposedConnectionState = HTTPConnectionStates.WaitForProtocolShutdown;
}
else if (this.conn.CurrentRequest.State == HTTPRequestStates.Processing)
{
if (this.conn.CurrentRequest.Response != null)
{
this.conn.CurrentRequest.State = HTTPRequestStates.Finished;
}
else
{
this.conn.CurrentRequest.Exception = new Exception(string.Format("[{0}] Remote server closed the connection before sending response header! Previous request state: {1}. Connection state: {2}",
this.ToString(),
this.conn.CurrentRequest.State.ToString(),
this.conn.State.ToString()));
this.conn.CurrentRequest.State = HTTPRequestStates.Error;
proposedConnectionState = HTTPConnectionStates.Closed;
}
}
this.conn.CurrentRequest = null;
if (proposedConnectionState == HTTPConnectionStates.Processing)
{
proposedConnectionState = HTTPConnectionStates.Recycle;
}
ConnectionEventHelper.EnqueueConnectionEvent(new ConnectionEventInfo(this.conn, proposedConnectionState));
}
}
}
void OnResponse(int httpStatus, byte[] buffer, int bufferLength)
{
HTTPConnectionStates proposedConnectionState = HTTPConnectionStates.Processing;
bool resendRequest = false;
try
{
if (this.CurrentRequest.IsCancellationRequested)
{
return;
}
using (var ms = new BufferPoolMemoryStream())
{
Stream = ms;
XHR_GetStatusLine(NativeId, OnBufferCallback);
XHR_GetResponseHeaders(NativeId, OnBufferCallback);
if (buffer != null && bufferLength > 0)
{
ms.Write(buffer, 0, bufferLength);
}
ms.Seek(0L, SeekOrigin.Begin);
var internalBuffer = ms.GetBuffer();
string tmp = System.Text.Encoding.UTF8.GetString(internalBuffer);
HTTPManager.Logger.Information(this.NativeId + " OnResponse - full response ", tmp, this.Context);
SupportedProtocols protocol = CurrentRequest.ProtocolHandler == SupportedProtocols.Unknown ? HTTPProtocolFactory.GetProtocolFromUri(CurrentRequest.CurrentUri) : CurrentRequest.ProtocolHandler;
CurrentRequest.Response = HTTPProtocolFactory.Get(protocol, CurrentRequest, ms, CurrentRequest.UseStreaming, false);
CurrentRequest.Response.Receive(buffer != null && bufferLength > 0 ? (int)bufferLength : -1, true);
KeepAliveHeader keepAlive = null;
ConnectionHelper.HandleResponse(this.ToString(), this.CurrentRequest, out resendRequest, out proposedConnectionState, ref keepAlive);
}
}
catch (Exception e)
{
HTTPManager.Logger.Exception(this.NativeId + " WebGLConnection", "OnResponse", e, this.Context);
if (this.ShutdownType == ShutdownTypes.Immediate)
{
return;
}
#if !BESTHTTP_DISABLE_CACHING
if (this.CurrentRequest.UseStreaming)
{
HTTPCacheService.DeleteEntity(this.CurrentRequest.CurrentUri);
}
#endif
// Something gone bad, Response must be null!
this.CurrentRequest.Response = null;
if (!this.CurrentRequest.IsCancellationRequested)
{
this.CurrentRequest.Exception = e;
this.CurrentRequest.State = HTTPRequestStates.Error;
}
proposedConnectionState = HTTPConnectionStates.Closed;
}
finally
{
// Exit ASAP
if (this.ShutdownType != ShutdownTypes.Immediate)
{
if (this.CurrentRequest.IsCancellationRequested)
{
// we don't know what stage the request is cancelled, we can't safely reuse the tcp channel.
proposedConnectionState = HTTPConnectionStates.Closed;
this.CurrentRequest.Response = null;
this.CurrentRequest.State = this.CurrentRequest.IsTimedOut ? HTTPRequestStates.TimedOut : HTTPRequestStates.Aborted;
}
else if (resendRequest)
{
RequestEventHelper.EnqueueRequestEvent(new RequestEventInfo(this.CurrentRequest, RequestEvents.Resend));
}
else if (this.CurrentRequest.Response != null && this.CurrentRequest.Response.IsUpgraded)
{
proposedConnectionState = HTTPConnectionStates.WaitForProtocolShutdown;
}
else if (this.CurrentRequest.State == HTTPRequestStates.Processing)
{
if (this.CurrentRequest.Response != null)
{
this.CurrentRequest.State = HTTPRequestStates.Finished;
}
else
{
this.CurrentRequest.Exception = new Exception(string.Format("[{0}] Remote server closed the connection before sending response header! Previous request state: {1}. Connection state: {2}",
this.ToString(),
this.CurrentRequest.State.ToString(),
this.State.ToString()));
this.CurrentRequest.State = HTTPRequestStates.Error;
proposedConnectionState = HTTPConnectionStates.Closed;
}
}
this.CurrentRequest = null;
if (proposedConnectionState == HTTPConnectionStates.Processing)
{
proposedConnectionState = HTTPConnectionStates.Closed;
}
ConnectionEventHelper.EnqueueConnectionEvent(new ConnectionEventInfo(this, proposedConnectionState));
}
}
}
