chore: check message size before fake sync

lib/src/room.dart

@@ -923,24 +923,11 @@ class Room {
 
   Future<String?> _sendContent(
     String type,
-    Map<String, dynamic> content, {
+    Map<String, dynamic> sendMessageContent, {
     String? txid,
   }) async {
     txid ??= client.generateUniqueTransactionId();
 
-    final mustEncrypt = encrypted && client.encryptionEnabled;
-
-    final sendMessageContent = mustEncrypt
-        ? await client.encryption!
-            .encryptGroupMessagePayload(id, content, type: type)
-        : content;
-
-    final utf8EncodedJsonLength =
-        utf8.encode(jsonEncode(sendMessageContent)).length;
-
-    if (utf8EncodedJsonLength > maxPDUSize) {
-      throw EventTooLarge(utf8EncodedJsonLength);
-    }
     return await client.sendMessage(
       id,
       sendMessageContent.containsKey('ciphertext')
@@ -1053,6 +1040,21 @@ class Room {
       }
     }
     final sentDate = DateTime.now();
+
+    final mustEncrypt = encrypted && client.encryptionEnabled;
+
+    final sendMessageContent = mustEncrypt
+        ? await client.encryption!
+            .encryptGroupMessagePayload(id, content, type: type)
+        : content;
+
+    final utf8EncodedJsonLength =
+        utf8.encode(jsonEncode(sendMessageContent)).length;
+
+    if (utf8EncodedJsonLength > maxPDUSize) {
+      throw EventTooLarge(utf8EncodedJsonLength);
+    }
+
     final syncUpdate = SyncUpdate(
       nextBatch: '',
       rooms: RoomsUpdate(
@@ -1092,13 +1094,11 @@ class Room {
       try {
         res = await _sendContent(
           type,
-          content,
+          sendMessageContent,
           txid: messageID,
         );
       } catch (e, s) {
-        if (e is EventTooLarge) {
+        if (e is MatrixException &&
-          rethrow;
-        } else if (e is MatrixException &&
             e.retryAfterMs != null &&
             !DateTime.now()
                 .add(Duration(milliseconds: e.retryAfterMs!))

lib/src/voip/call.dart

@@ -1718,7 +1718,7 @@ class CallSession {
       if (capabilities != null) 'capabilities': capabilities.toJson(),
       if (metadata != null) sdpStreamMetadataKey: metadata.toJson(),
     };
-    return await _sendContent(
+    return await _sendCallContent(
       room,
       EventTypes.CallInvite,
       content,
@@ -1746,7 +1746,7 @@ class CallSession {
       'selected_party_id': selected_party_id,
     };
 
-    return await _sendContent(
+    return await _sendCallContent(
       room,
       EventTypes.CallSelectAnswer,
       content,
@@ -1769,7 +1769,7 @@ class CallSession {
       'version': version,
     };
 
-    return await _sendContent(
+    return await _sendCallContent(
       room,
       EventTypes.CallReject,
       content,
@@ -1799,7 +1799,7 @@ class CallSession {
       if (capabilities != null) 'capabilities': capabilities.toJson(),
       if (metadata != null) sdpStreamMetadataKey: metadata.toJson(),
     };
-    return await _sendContent(
+    return await _sendCallContent(
       room,
       EventTypes.CallNegotiate,
       content,
@@ -1842,7 +1842,7 @@ class CallSession {
       'version': version,
       'candidates': candidates,
     };
-    return await _sendContent(
+    return await _sendCallContent(
       room,
       EventTypes.CallCandidates,
       content,
@@ -1872,7 +1872,7 @@ class CallSession {
       if (capabilities != null) 'capabilities': capabilities.toJson(),
       if (metadata != null) sdpStreamMetadataKey: metadata.toJson(),
     };
-    return await _sendContent(
+    return await _sendCallContent(
       room,
       EventTypes.CallAnswer,
       content,
@@ -1894,7 +1894,7 @@ class CallSession {
       'version': version,
       if (hangupCause != null) 'reason': hangupCause,
     };
-    return await _sendContent(
+    return await _sendCallContent(
       room,
       EventTypes.CallHangup,
       content,
@@ -1926,7 +1926,7 @@ class CallSession {
       'version': version,
       sdpStreamMetadataKey: metadata.toJson(),
     };
-    return await _sendContent(
+    return await _sendCallContent(
       room,
       EventTypes.CallSDPStreamMetadataChangedPrefix,
       content,
@@ -1950,7 +1950,7 @@ class CallSession {
       'version': version,
       ...callReplaces.toJson(),
     };
-    return await _sendContent(
+    return await _sendCallContent(
       room,
       EventTypes.CallReplaces,
       content,
@@ -1974,7 +1974,7 @@ class CallSession {
       'version': version,
       'asserted_identity': assertedIdentity.toJson(),
     };
-    return await _sendContent(
+    return await _sendCallContent(
       room,
       EventTypes.CallAssertedIdentity,
       content,
@@ -1982,7 +1982,7 @@ class CallSession {
     );
   }
 
-  Future<String?> _sendContent(
+  Future<String?> _sendCallContent(
     Room room,
     String type,
     Map<String, dynamic> content, {