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
}
cause = RetryCauses.None;
// Connect to the server
#if NETFX_CORE
await
#endif
Connect();
if (State == HTTPConnectionStates.AbortRequested)
throw new Exception("AbortRequested");
lock(HTTPManager.Locker)
StartTime = DateTime.UtcNow;
// 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();
// 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 (!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))
{
// 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 = GetRedirectUri(location);
// 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;
}
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.Exception = e;
CurrentRequest.State = HTTPRequestStates.Error;
break;
case HTTPConnectionStates.TimedOut:
CurrentRequest.State = HTTPRequestStates.TimedOut;
break;
default:
CurrentRequest.State = HTTPRequestStates.Aborted;
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;
#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
}
cause = RetryCauses.None;
// Connect to the server
#if NETFX_CORE
await
#endif
Connect();
if (State == HTTPConnectionStates.AbortRequested)
{
throw new Exception("AbortRequested");
}
lock (HTTPManager.Locker)
StartTime = DateTime.UtcNow;
// 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();
// 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 (!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))
{
// 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 = GetRedirectUri(location);
// 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;
}
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.Exception = e;
CurrentRequest.State = HTTPRequestStates.Error;
break;
case HTTPConnectionStates.TimedOut:
CurrentRequest.State = HTTPRequestStates.TimedOut;
break;
default:
CurrentRequest.State = HTTPRequestStates.Aborted;
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();
}
}
