feat(eventsub): reconnect (#6035)

lib/twitch-eventsub-ws/include/twitch-eventsub-ws/listener.hpp

@@ -30,6 +30,10 @@ public:
     virtual void onNotification(const messages::Metadata &metadata,
                                 const boost::json::value &jv) = 0;
 
+    virtual void onClose(
+        std::unique_ptr<Listener> self,
+        const std::optional<std::string> & /* reconnectUrl */) {};
+
     // Subscription types
     virtual void onChannelBan(
         const messages::Metadata &metadata,

lib/twitch-eventsub-ws/include/twitch-eventsub-ws/payloads/session-welcome.hpp

@@ -24,6 +24,7 @@ namespace chatterino::eventsub::lib::payload::session_welcome {
 /// json_inner=session
 struct Payload {
     std::string id;
+    std::optional<std::string> reconnectURL;
 };
 
 #include "twitch-eventsub-ws/payloads/session-welcome.inc"

lib/twitch-eventsub-ws/include/twitch-eventsub-ws/session.hpp

@@ -22,20 +22,8 @@ boost::system::error_code handleMessage(
     std::unique_ptr<Listener> &listener,
     const boost::beast::flat_buffer &buffer);
 
-// Sends a WebSocket message and prints the response
 class Session : public std::enable_shared_from_this<Session>
 {
-    boost::asio::ip::tcp::resolver resolver;
-    boost::beast::websocket::stream<
-        boost::beast::ssl_stream<boost::beast::tcp_stream>>
-        ws;
-    boost::beast::flat_buffer buffer;
-    std::string host;
-    std::string port;
-    std::string path;
-    std::string userAgent;
-    std::unique_ptr<Listener> listener;
-
 public:
     // Resolver and socket require an io_context
     explicit Session(boost::asio::io_context &ioc,
@@ -65,6 +53,19 @@ private:
     void onRead(boost::beast::error_code ec, std::size_t bytes_transferred);
 
     void onClose(boost::beast::error_code ec);
+
+    void fail(boost::beast::error_code ec, std::string_view op);
+
+    boost::asio::ip::tcp::resolver resolver;
+    boost::beast::websocket::stream<
+        boost::beast::ssl_stream<boost::beast::tcp_stream>>
+        ws;
+    boost::beast::flat_buffer buffer;
+    std::string host;
+    std::string port;
+    std::string path;
+    std::string userAgent;
+    std::unique_ptr<Listener> listener;
 };
 
 }  // namespace chatterino::eventsub::lib