void ThreadFunc(object param)
{
bool alreadyReconnected = false;
bool redirected = false;
RetryCauses cause = RetryCauses.None;
#if LOCK_ON_FILE
object uriLock = null;
#endif
#if UNITY_WEBPLAYER
// Right now, no caching supported in the webplayer
if (!CurrentRequest.DisableCache)
{
CurrentRequest.DisableCache = true;
}
#endif
try
{
if (!HasProxy && CurrentRequest.HasProxy)
{
Proxy = CurrentRequest.Proxy;
}
// Lock only if we will use the cached entity.
#if LOCK_ON_FILE
if (!CurrentRequest.DisableCache)
{
Monitor.Enter(uriLock = HTTPCacheFileLock.Acquire(CurrentRequest.CurrentUri));
}
#endif
// Try load the full response from an already saved cache entity. If the response
if (TryLoadAllFromCache())
{
return;
}
if (Client != null && !Client.IsConnected())
{
Close();
}
do // of while (reconnect)
{
if (cause == RetryCauses.Reconnect)
{
Close();
#if NETFX_CORE
await Task.Delay(100);
#else
Thread.Sleep(100);
#endif
}
LastProcessedUri = CurrentRequest.CurrentUri;
cause = RetryCauses.None;
// Connect to the server
Connect();
if (State == HTTPConnectionStates.AbortRequested)
{
throw new Exception("AbortRequested");
}
// Setup cache control headers before we send out the request
if (!CurrentRequest.DisableCache)
{
HTTPCacheService.SetHeaders(CurrentRequest);
}
// Write the request to the stream
// sentRequest will be true if the request sent out successfully(no SocketException), so we can try read the response
bool sentRequest = CurrentRequest.SendOutTo(Stream);
// sentRequest only true if there are no exceptions during CurrentRequest.SendOutTo.
if (!sentRequest)
{
Close();
if (State == HTTPConnectionStates.TimedOut)
{
throw new Exception("AbortRequested");
}
// We will try again only once
if (!alreadyReconnected)
{
alreadyReconnected = true;
cause = RetryCauses.Reconnect;
}
}
// If sending out the request succeded, we will try read the response.
if (sentRequest)
{
bool received = Receive();
if (State == HTTPConnectionStates.TimedOut)
{
throw new Exception("AbortRequested");
}
if (!received && !alreadyReconnected)
{
alreadyReconnected = true;
cause = RetryCauses.Reconnect;
}
if (CurrentRequest.Response != null)
{
switch (CurrentRequest.Response.StatusCode)
{
// Not authorized
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.2
case 401:
{
string authHeader = CurrentRequest.Response.GetFirstHeaderValue("www-authenticate");
if (!string.IsNullOrEmpty(authHeader))
{
var digest = DigestStore.GetOrCreate(CurrentRequest.CurrentUri);
digest.ParseChallange(authHeader);
if (CurrentRequest.Credentials != null && digest.IsUriProtected(CurrentRequest.CurrentUri) && (!CurrentRequest.HasHeader("Authorization") || digest.Stale))
{
cause = RetryCauses.Authenticate;
}
}
goto default;
}
// Proxy authentication required
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.8
case 407:
{
if (CurrentRequest.HasProxy)
{
string authHeader = CurrentRequest.Response.GetFirstHeaderValue("proxy-authenticate");
if (!string.IsNullOrEmpty(authHeader))
{
var digest = DigestStore.GetOrCreate(CurrentRequest.Proxy.Address);
digest.ParseChallange(authHeader);
if (CurrentRequest.Proxy.Credentials != null && digest.IsUriProtected(CurrentRequest.Proxy.Address) && (!CurrentRequest.HasHeader("Proxy-Authorization") || digest.Stale))
{
cause = RetryCauses.ProxyAuthenticate;
}
}
}
goto default;
}
// Redirected
case 301: // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.2
case 302: // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.3
case 307: // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.8
case 308: // http://tools.ietf.org/html/rfc7238
{
if (CurrentRequest.RedirectCount >= CurrentRequest.MaxRedirects)
{
goto default;
}
CurrentRequest.RedirectCount++;
string location = CurrentRequest.Response.GetFirstHeaderValue("location");
if (!string.IsNullOrEmpty(location))
{
Uri redirectUri = GetRedirectUri(location);
// Let the user to take some control over the redirection
if (!CurrentRequest.CallOnBeforeRedirection(redirectUri))
{
HTTPManager.Logger.Information("HTTPConnection", "OnBeforeRedirection returned False");
goto default;
}
// Remove the previously set Host header.
CurrentRequest.RemoveHeader("Host");
// Set the Referer header to the last Uri.
CurrentRequest.SetHeader("Referer", CurrentRequest.CurrentUri.ToString());
// Set the new Uri, the CurrentUri will return this while the IsRedirected property is true
CurrentRequest.RedirectUri = redirectUri;
// Discard the redirect response, we don't need it any more
CurrentRequest.Response = null;
redirected = CurrentRequest.IsRedirected = true;
}
else
#if !NETFX_CORE
{ throw new MissingFieldException(string.Format("Got redirect status({0}) without 'location' header!", CurrentRequest.Response.StatusCode.ToString())); }
#else
{ throw new Exception(string.Format("Got redirect status({0}) without 'location' header!", CurrentRequest.Response.StatusCode.ToString())); }
#endif
goto default;
}
default:
if (CurrentRequest.IsCookiesEnabled)
{
CookieJar.Set(CurrentRequest.Response);
}
TryStoreInCache();
break;
}
// If we have a response and the server telling us that it closed the connection after the message sent to us, then
// we will colse the connection too.
if (CurrentRequest.Response == null ||
CurrentRequest.Response.HasHeaderWithValue("connection", "close") ||
CurrentRequest.UseAlternateSSL)
{
Close();
}
}
}
} while (cause != RetryCauses.None);
}
catch (TimeoutException e)
{
CurrentRequest.Response = null;
CurrentRequest.Exception = e;
CurrentRequest.State = HTTPRequestStates.ConnectionTimedOut;
Close();
}
catch (Exception e)
{
if (CurrentRequest.UseStreaming)
{
HTTPCacheService.DeleteEntity(CurrentRequest.CurrentUri);
}
// Something gone bad, Response must be null!
CurrentRequest.Response = null;
switch (State)
{
case HTTPConnectionStates.AbortRequested:
CurrentRequest.State = HTTPRequestStates.Aborted;
break;
case HTTPConnectionStates.TimedOut:
CurrentRequest.State = HTTPRequestStates.TimedOut;
break;
default:
CurrentRequest.Exception = e;
CurrentRequest.State = HTTPRequestStates.Error;
break;
}
Close();
}
finally
{
#if LOCK_ON_FILE
if (!CurrentRequest.DisableCache && uriLock != null)
{
Monitor.Exit(uriLock);
}
#endif
// Avoid state changes. While we are in this block changing the connection's State, on Unity's main thread
// the HTTPManager's OnUpdate will check the connections's State and call functions that can change the inner state of
// the object. (Like setting the CurrentRequest to null in function Recycle() causing a NullRef exception)
lock (HTTPManager.Locker)
{
if (CurrentRequest != null && CurrentRequest.Response != null && CurrentRequest.Response.IsUpgraded)
{
State = HTTPConnectionStates.Upgraded;
}
else
{
State = redirected ? HTTPConnectionStates.Redirected : (Client == null ? HTTPConnectionStates.Closed : HTTPConnectionStates.WaitForRecycle);
}
// Change the request's state only when the whole processing finished
if (CurrentRequest.State == HTTPRequestStates.Processing && (State == HTTPConnectionStates.Closed || State == HTTPConnectionStates.WaitForRecycle))
{
CurrentRequest.State = HTTPRequestStates.Finished;
}
if (CurrentRequest.State == HTTPRequestStates.ConnectionTimedOut)
{
State = HTTPConnectionStates.Closed;
}
LastProcessTime = DateTime.UtcNow;
}
HTTPCacheService.SaveLibrary();
CookieJar.Persist();
}
}
void ThreadFunc(object param)
{
bool alreadyReconnected = false;
bool redirected = false;
RetryCauses cause = RetryCauses.None;
try
{
#if !BESTHTTP_DISABLE_PROXY
if (!HasProxy && CurrentRequest.HasProxy)
{
Proxy = CurrentRequest.Proxy;
}
#endif
#if !BESTHTTP_DISABLE_CACHING && (!UNITY_WEBGL || UNITY_EDITOR)
// Try load the full response from an already saved cache entity. If the response
if (TryLoadAllFromCache())
{
return;
}
#endif
if (Client != null && !Client.IsConnected())
{
Close();
}
do // of while (reconnect)
{
if (cause == RetryCauses.Reconnect)
{
Close();
#if NETFX_CORE
await Task.Delay(100);
#else
Thread.Sleep(100);
#endif
}
LastProcessedUri = CurrentRequest.CurrentUri;
cause = RetryCauses.None;
// Connect to the server
Connect();
if (State == HTTPConnectionStates.AbortRequested)
{
throw new Exception("AbortRequested");
}
#if !BESTHTTP_DISABLE_CACHING && (!UNITY_WEBGL || UNITY_EDITOR)
// Setup cache control headers before we send out the request
if (!CurrentRequest.DisableCache)
{
HTTPCacheService.SetHeaders(CurrentRequest);
}
#endif
// Write the request to the stream
// sentRequest will be true if the request sent out successfully(no SocketException), so we can try read the response
bool sentRequest = false;
try
{
#if !NETFX_CORE
Client.NoDelay = CurrentRequest.TryToMinimizeTCPLatency;
#endif
CurrentRequest.SendOutTo(Stream);
sentRequest = true;
}
catch (Exception ex)
{
Close();
if (State == HTTPConnectionStates.TimedOut ||
State == HTTPConnectionStates.AbortRequested)
{
throw new Exception("AbortRequested");
}
// We will try again only once
if (!alreadyReconnected && !CurrentRequest.DisableRetry)
{
alreadyReconnected = true;
cause = RetryCauses.Reconnect;
}
else // rethrow exception
{
throw ex;
}
}
// If sending out the request succeeded, we will try read the response.
if (sentRequest)
{
bool received = Receive();
if (State == HTTPConnectionStates.TimedOut ||
State == HTTPConnectionStates.AbortRequested)
{
throw new Exception("AbortRequested");
}
if (!received && !alreadyReconnected && !CurrentRequest.DisableRetry)
{
alreadyReconnected = true;
cause = RetryCauses.Reconnect;
}
if (CurrentRequest.Response != null)
{
#if !BESTHTTP_DISABLE_COOKIES && (!UNITY_WEBGL || UNITY_EDITOR)
// Try to store cookies before we do anything else, as we may remove the response deleting the cookies as well.
if (CurrentRequest.IsCookiesEnabled)
{
CookieJar.Set(CurrentRequest.Response);
}
#endif
switch (CurrentRequest.Response.StatusCode)
{
// Not authorized
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.2
case 401:
{
string authHeader = DigestStore.FindBest(CurrentRequest.Response.GetHeaderValues("www-authenticate"));
if (!string.IsNullOrEmpty(authHeader))
{
var digest = DigestStore.GetOrCreate(CurrentRequest.CurrentUri);
digest.ParseChallange(authHeader);
if (CurrentRequest.Credentials != null && digest.IsUriProtected(CurrentRequest.CurrentUri) && (!CurrentRequest.HasHeader("Authorization") || digest.Stale))
{
cause = RetryCauses.Authenticate;
}
}
goto default;
}
#if !BESTHTTP_DISABLE_PROXY
// Proxy authentication required
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.8
case 407:
{
if (CurrentRequest.HasProxy)
{
string authHeader = DigestStore.FindBest(CurrentRequest.Response.GetHeaderValues("proxy-authenticate"));
if (!string.IsNullOrEmpty(authHeader))
{
var digest = DigestStore.GetOrCreate(CurrentRequest.Proxy.Address);
digest.ParseChallange(authHeader);
if (CurrentRequest.Proxy.Credentials != null && digest.IsUriProtected(CurrentRequest.Proxy.Address) && (!CurrentRequest.HasHeader("Proxy-Authorization") || digest.Stale))
{
cause = RetryCauses.ProxyAuthenticate;
}
}
}
goto default;
}
#endif
// Redirected
case 301: // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.2
case 302: // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.3
case 307: // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.8
case 308: // http://tools.ietf.org/html/rfc7238
{
if (CurrentRequest.RedirectCount >= CurrentRequest.MaxRedirects)
{
goto default;
}
CurrentRequest.RedirectCount++;
string location = CurrentRequest.Response.GetFirstHeaderValue("location");
if (!string.IsNullOrEmpty(location))
{
Uri redirectUri = GetRedirectUri(location);
if (HTTPManager.Logger.Level == Logger.Loglevels.All)
{
HTTPManager.Logger.Verbose("HTTPConnection", string.Format("{0} - Redirected to Location: '{1}' redirectUri: '{1}'", this.CurrentRequest.CurrentUri.ToString(), location, redirectUri));
}
// Let the user to take some control over the redirection
if (!CurrentRequest.CallOnBeforeRedirection(redirectUri))
{
HTTPManager.Logger.Information("HTTPConnection", "OnBeforeRedirection returned False");
goto default;
}
// Remove the previously set Host header.
CurrentRequest.RemoveHeader("Host");
// Set the Referer header to the last Uri.
CurrentRequest.SetHeader("Referer", CurrentRequest.CurrentUri.ToString());
// Set the new Uri, the CurrentUri will return this while the IsRedirected property is true
CurrentRequest.RedirectUri = redirectUri;
// Discard the redirect response, we don't need it any more
CurrentRequest.Response = null;
redirected = CurrentRequest.IsRedirected = true;
}
else
#if !NETFX_CORE
{ throw new MissingFieldException(string.Format("Got redirect status({0}) without 'location' header!", CurrentRequest.Response.StatusCode.ToString())); }
#else
{ throw new Exception(string.Format("Got redirect status({0}) without 'location' header!", CurrentRequest.Response.StatusCode.ToString())); }
#endif
goto default;
}
default:
#if !BESTHTTP_DISABLE_CACHING && (!UNITY_WEBGL || UNITY_EDITOR)
TryStoreInCache();
#endif
break;
}
// If we have a response and the server telling us that it closed the connection after the message sent to us, then
// we will close the connection too.
bool closeByServer = CurrentRequest.Response == null || CurrentRequest.Response.HasHeaderWithValue("connection", "close");
bool closeByClient = !CurrentRequest.Response.IsClosedManually && !CurrentRequest.IsKeepAlive;
if (closeByServer || closeByClient)
{
Close();
}
else if (CurrentRequest.Response != null)
{
var keepAliveheaderValues = CurrentRequest.Response.GetHeaderValues("keep-alive");
if (keepAliveheaderValues != null && keepAliveheaderValues.Count > 0)
{
if (KeepAlive == null)
{
KeepAlive = new KeepAliveHeader();
}
KeepAlive.Parse(keepAliveheaderValues);
}
}
}
}
} while (cause != RetryCauses.None);
}
catch (TimeoutException e)
{
CurrentRequest.Response = null;
CurrentRequest.Exception = e;
CurrentRequest.State = HTTPRequestStates.ConnectionTimedOut;
Close();
}
catch (Exception e)
{
if (CurrentRequest != null)
{
#if !BESTHTTP_DISABLE_CACHING && (!UNITY_WEBGL || UNITY_EDITOR)
if (CurrentRequest.UseStreaming)
{
HTTPCacheService.DeleteEntity(CurrentRequest.CurrentUri);
}
#endif
// Something gone bad, Response must be null!
CurrentRequest.Response = null;
switch (State)
{
case HTTPConnectionStates.Closed:
case HTTPConnectionStates.AbortRequested:
CurrentRequest.State = HTTPRequestStates.Aborted;
break;
case HTTPConnectionStates.TimedOut:
CurrentRequest.State = HTTPRequestStates.TimedOut;
break;
default:
CurrentRequest.Exception = e;
CurrentRequest.State = HTTPRequestStates.Error;
break;
}
}
Close();
}
finally
{
if (CurrentRequest != null)
{
// Avoid state changes. While we are in this block changing the connection's State, on Unity's main thread
// the HTTPManager's OnUpdate will check the connections's State and call functions that can change the inner state of
// the object. (Like setting the CurrentRequest to null in function Recycle() causing a NullRef exception)
lock (HTTPManager.Locker)
{
if (CurrentRequest != null && CurrentRequest.Response != null && CurrentRequest.Response.IsUpgraded)
{
State = HTTPConnectionStates.Upgraded;
}
else
{
State = redirected ? HTTPConnectionStates.Redirected : (Client == null ? HTTPConnectionStates.Closed : HTTPConnectionStates.WaitForRecycle);
}
// Change the request's state only when the whole processing finished
if (CurrentRequest.State == HTTPRequestStates.Processing && (State == HTTPConnectionStates.Closed || State == HTTPConnectionStates.WaitForRecycle))
{
if (CurrentRequest.Response != null)
{
CurrentRequest.State = HTTPRequestStates.Finished;
}
else
{
CurrentRequest.Exception = new Exception(string.Format("Remote server closed the connection before sending response header! Previous request state: {0}. Connection state: {1}",
CurrentRequest.State.ToString(),
State.ToString()));
CurrentRequest.State = HTTPRequestStates.Error;
}
}
if (CurrentRequest.State == HTTPRequestStates.ConnectionTimedOut)
{
State = HTTPConnectionStates.Closed;
}
LastProcessTime = DateTime.UtcNow;
if (OnConnectionRecycled != null)
{
RecycleNow();
}
}
#if !BESTHTTP_DISABLE_CACHING && (!UNITY_WEBGL || UNITY_EDITOR)
HTTPCacheService.SaveLibrary();
#endif
#if !BESTHTTP_DISABLE_COOKIES && (!UNITY_WEBGL || UNITY_EDITOR)
CookieJar.Persist();
#endif
}
}
}