fix(eventsub): retry if the WS session expired (#6093)

CHANGELOG.md

@@ -50,7 +50,7 @@
 - Bugfix: Fixed some windows not immediately closing. (#6054)
 - Bugfix: The emote button no longer looks crunchy. (#6080, #6085)
 - Dev: Subscriptions to PubSub channel points redemption topics now use no auth token, making it continue to work during PubSub shutdown. (#5947)
-- Dev: Add initial experimental EventSub support. (#5837, #5895, #5897, #5904, #5910, #5903, #5915, #5916, #5930, #5935, #5932, #5943, #5952, #5953, #5968, #5973, #5974, #5980, #5981, #5985, #5990, #5992, #5993, #5996, #5995, #6000, #6001, #6002, #6003, #6005, #6007, #6010, #6008, #6012, #6013, #6015, #6017, #6027, #6028, #6035, #6036, #6040, #6041, #6048, #6058, #6059, #6078, #6079, #6086, #6092)
+- Dev: Add initial experimental EventSub support. (#5837, #5895, #5897, #5904, #5910, #5903, #5915, #5916, #5930, #5935, #5932, #5943, #5952, #5953, #5968, #5973, #5974, #5980, #5981, #5985, #5990, #5992, #5993, #5996, #5995, #6000, #6001, #6002, #6003, #6005, #6007, #6010, #6008, #6012, #6013, #6015, #6017, #6027, #6028, #6035, #6036, #6040, #6041, #6048, #6058, #6059, #6078, #6079, #6086, #6092, #6093)
 - Dev: Remove unneeded platform specifier for toasts. (#5914)
 - Dev: Cleanly shutdown on `SIGINT`/`SIGTERM` on Linux & macOS. (#6053)
 - Dev: Highlight checks now use non-capturing groups for the boundaries. (#5784)

src/providers/twitch/api/Helix.cpp

@@ -3271,7 +3271,16 @@ void Helix::createEventSubSubscription(
             switch (*result.status())
             {
                 case 400: {
-                    failureCallback(Error::BadRequest, message);
+                    if (message.startsWith(
+                            "websocket transport session does not exist",
+                            Qt::CaseInsensitive))
+                    {
+                        failureCallback(Error::NoSession, message);
+                    }
+                    else
+                    {
+                        failureCallback(Error::BadRequest, message);
+                    }
                 }
                 break;
 

src/providers/twitch/api/Helix.hpp

@@ -864,6 +864,7 @@ enum class HelixCreateEventSubSubscriptionError : std::uint8_t {
     Forbidden,
     Conflict,
     Ratelimited,
+    NoSession,
 
     // The error message is forwarded directly from the Twitch API
     Forwarded,

src/providers/twitch/eventsub/Controller.cpp

@@ -323,6 +323,8 @@ void Controller::subscribe(const SubscriptionRequest &request, bool isRetry)
             },
             [this, request](const auto &error, const auto &errorString) {
                 using Error = HelixCreateEventSubSubscriptionError;
+
+                bool retry = false;
                 switch (error)
                 {
                     case Error::BadRequest:
@@ -347,18 +349,31 @@ void Controller::subscribe(const SubscriptionRequest &request, bool isRetry)
                         qCDebug(LOG) << "Ratelimited" << errorString << request;
                         break;
 
+                    case Error::NoSession:
+                        qCDebug(LOG) << "Session expired, retrying"
+                                     << errorString << request;
+                        retry = true;
+                        break;
+
                     case Error::Forwarded:
                     default:
                         qCWarning(LOG) << "Unhandled error, retrying "
                                           "subscription"
                                        << errorString << request;
-                        boost::asio::post(this->ioContext, [this, request] {
-                            this->retrySubscription(request);
-                        });
-                        return;
+                        retry = true;
+                        break;
                 }
 
-                this->markRequestFailed(request);
+                if (retry)
+                {
+                    boost::asio::post(this->ioContext, [this, request] {
+                        this->retrySubscription(request);
+                    });
+                }
+                else
+                {
+                    this->markRequestFailed(request);
+                }
             });
 
         return;