Task SendUsingNewConnection(IPipe<OwinHostContext> connectionPipe, OwinHostScope scope, CancellationToken stoppingToken)
{
try
{
if (_cacheTaskScope.StoppingToken.IsCancellationRequested)
throw new TaskCanceledException($"The connection is being disconnected: {_settings.ToDebugString()}");
if (_log.IsDebugEnabled)
_log.DebugFormat("Connecting: {0}", _settings.ToDebugString());
if (_log.IsDebugEnabled)
{
_log.DebugFormat("Connected: {0} (address: {1}, local: {2}", _settings.ToDebugString(),
_settings.Host, _settings.Port);
}
var hostContext = new HttpOwinHostContext(_settings, _cacheTaskScope);
hostContext.GetOrAddPayload(() => _settings);
scope.Connected(hostContext);
}
catch (Exception ex)
{
Interlocked.CompareExchange(ref _scope, null, scope);
scope.ConnectFaulted(ex);
throw new HttpConnectionException("Connect failed: " + _settings.ToDebugString(), ex);
}
return SendUsingExistingConnection(connectionPipe, scope, stoppingToken);
}
public Task Send(IPipe<OwinHostContext> connectionPipe, CancellationToken stoppingToken)
{
OwinHostScope newScope = null;
OwinHostScope existingScope;
lock (_scopeLock)
{
existingScope = _scope;
if (existingScope == null)
{
newScope = new OwinHostScope(_cacheTaskScope, _settings);
_scope = newScope;
}
}
if (existingScope != null)
return SendUsingExistingConnection(connectionPipe, existingScope, stoppingToken);
return SendUsingNewConnection(connectionPipe, newScope, stoppingToken);
}
public Task Send(IPipe <OwinHostContext> connectionPipe, CancellationToken stoppingToken)
{
OwinHostScope newScope = null;
OwinHostScope existingScope;
lock (_scopeLock)
{
existingScope = _scope;
if (existingScope == null)
{
newScope = new OwinHostScope(_cacheTaskScope, _settings);
_scope = newScope;
}
}
if (existingScope != null)
{
return(SendUsingExistingConnection(connectionPipe, existingScope, stoppingToken));
}
return(SendUsingNewConnection(connectionPipe, newScope, stoppingToken));
}
Task SendUsingNewConnection(IPipe <OwinHostContext> connectionPipe, OwinHostScope scope, CancellationToken stoppingToken)
{
try
{
if (_cacheTaskScope.StoppingToken.IsCancellationRequested)
{
throw new TaskCanceledException($"The connection is being disconnected: {_settings.ToDebugString()}");
}
if (_log.IsDebugEnabled)
{
_log.DebugFormat("Connecting: {0}", _settings.ToDebugString());
}
if (_log.IsDebugEnabled)
{
_log.DebugFormat("Connected: {0} (address: {1}, local: {2}", _settings.ToDebugString(),
_settings.Host, _settings.Port);
}
var hostContext = new HttpOwinHostContext(_settings, _cacheTaskScope);
hostContext.GetOrAddPayload(() => _settings);
scope.Connected(hostContext);
}
catch (Exception ex)
{
Interlocked.CompareExchange(ref _scope, null, scope);
scope.ConnectFaulted(ex);
throw new HttpConnectionException("Connect failed: " + _settings.ToDebugString(), ex);
}
return(SendUsingExistingConnection(connectionPipe, scope, stoppingToken));
}
async Task SendUsingExistingConnection(IPipe <OwinHostContext> connectionPipe, OwinHostScope scope, CancellationToken cancellationToken)
{
try
{
using (var context = await scope.Attach(cancellationToken).ConfigureAwait(false))
{
if (_log.IsDebugEnabled)
{
_log.DebugFormat("Using host: {0}", context.HostSettings.ToDebugString());
}
await connectionPipe.Send(context).ConfigureAwait(false);
}
}
catch (Exception ex)
{
if (_log.IsDebugEnabled)
{
_log.Debug("The host usage threw an exception", ex);
}
Interlocked.CompareExchange(ref _scope, null, scope);
scope.ConnectFaulted(ex);
throw;
}
}
async Task SendUsingExistingConnection(IPipe<OwinHostContext> connectionPipe, OwinHostScope scope, CancellationToken cancellationToken)
{
try
{
using (var context = await scope.Attach(cancellationToken).ConfigureAwait(false))
{
if (_log.IsDebugEnabled)
_log.DebugFormat("Using host: {0}", context.HostSettings.ToDebugString());
await connectionPipe.Send(context).ConfigureAwait(false);
}
}
catch (Exception ex)
{
if (_log.IsDebugEnabled)
_log.Debug("The host usage threw an exception", ex);
Interlocked.CompareExchange(ref _scope, null, scope);
scope.ConnectFaulted(ex);
throw;
}
}