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fix(battle-node): harden SIO parse + narrow Matched OppoId/Seed to int

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#3: SocketIoFrame.Parse now range-checks the packet type char (was
unchecked cast — any char outside 0-6 produced an undefined enum
value) and uses int.TryParse for ack-id (was int.Parse — a >10-digit
ack-id threw OverflowException, tearing down the WS mid-game). Both
now throw ArgumentException consistently. The read loop in
RealParticipant wraps both EIO and SIO parse calls with try-catch so
a malformed frame is logged and skipped instead of killing the battle.

#4: MatchedSelfInfo/MatchedOppoInfo OppoId and Seed narrowed from
long to int. The client reads both with Convert.ToInt32 inside a
swallowing try/catch — any value > int.MaxValue silently dropped the
Matched event, preventing the battle from starting. Seed was already
int-range (BattleSeeds.Stable returns int); OppoId (viewer ID) is
~847M in captures, well under int.MaxValue. The narrowing cast now
happens explicitly in ServerBattleFrames.BuildMatched at the wire
boundary.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
gamer147
2026-06-04 21:57:29 -04:00
parent e9af7af1b8
commit 99129c786c
9 changed files with 65 additions and 33 deletions
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8
SVSim.BattleNode/Protocol/Bodies/MatchedBody.cs
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@@ -19,8 +19,8 @@ public sealed record MatchedSelfInfo(
[property: JsonPropertyName("fieldId")] int FieldId,
[property: JsonPropertyName("isOfficial")]
[property: JsonConverter(typeof(NumericBoolJsonConverter))] bool IsOfficial,
[property: JsonPropertyName("oppoId")] long OppoId,
[property: JsonPropertyName("seed")] long Seed);
[property: JsonPropertyName("oppoId")] int OppoId,
[property: JsonPropertyName("seed")] int Seed);
public sealed record MatchedOppoInfo(
[property: JsonPropertyName("country_code")] string CountryCode,
@@ -31,8 +31,8 @@ public sealed record MatchedOppoInfo(
[property: JsonPropertyName("fieldId")] int FieldId,
[property: JsonPropertyName("isOfficial")]
[property: JsonConverter(typeof(NumericBoolJsonConverter))] bool IsOfficial,
[property: JsonPropertyName("oppoId")] long OppoId,
[property: JsonPropertyName("seed")] long Seed,
[property: JsonPropertyName("oppoId")] int OppoId,
[property: JsonPropertyName("seed")] int Seed,
[property: JsonPropertyName("oppoDeckCount")] int OppoDeckCount);
public sealed record DeckCardRef(