System.ArgumentOutOfRangeException - SMSG_UPDATE_OBJECT (3.4.2.50063)

Open

#802 opened on Oct 17, 2023 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 35/100

Issue type: Bug
Clarity: Needs clarification
Activity status: Stale
Tech stack: csharp
Domain: reverse-engineering, tooling

Research direction

Start with WowPacketParser/Misc/PacketReads.cs at FormatFloat, then trace the ReadSingle call from WowPacketParserModule.V2_5_1_38707/Parsers/UpdateHandler.cs in ReadMovementUpdateBlock. Reproduce the SMSG_UPDATE_OBJECT failure for client version 3.4.2.50063 and determine how the reported substring bounds should be handled; done means the packet parses without this exception.

Written by the indexing model from the issue text.

Description

System.ArgumentOutOfRangeException
Index and length must refer to a location within the string. (Parameter 'length')
   at System.String.ThrowSubstringArgumentOutOfRange(Int32 startIndex, Int32 length)
   at System.String.Substring(Int32 startIndex, Int32 length)
   at WowPacketParser.Misc.Packet.FormatFloat(Single value) in C:\Users\benjy\Documents\GitHub\WowPacketParser\WowPacketParser\Misc\PacketReads.cs:line 742
   at WowPacketParser.Misc.Packet.ReadSingle(String name, Object[] indexes) in C:\Users\benjy\Documents\GitHub\WowPacketParser\WowPacketParser\Misc\PacketReads.cs:line 362
   at WowPacketParserModule.V2_5_1_38707.Parsers.UpdateHandler.ReadMovementUpdateBlock(Packet packet, WowGuid guid, WoWObject obj, Object index) in C:\Users\benjy\Documents\GitHub\WowPacketParser\WowPacketParserModule.V2_5_1_38707\Parsers\UpdateHandler.cs:line 436
   at WowPacketParserModule.V2_5_1_38707.Parsers.UpdateHandler.ReadCreateObjectBlock(Packet packet, CreateObject createObject, WowGuid guid, UInt32 map, CreateObjectType createType, Object index) in C:\Users\benjy\Documents\GitHub\WowPacketParser\WowPacketParserModule.V2_5_1_38707\Parsers\UpdateHandler.cs:line 175
   at WowPacketParserModule.V2_5_1_38707.Parsers.UpdateHandler.HandleUpdateObject(Packet packet) in C:\Users\benjy\Documents\GitHub\WowPacketParser\WowPacketParserModule.V2_5_1_38707\Parsers\UpdateHandler.cs:line 150
   at WowPacketParser.Parsing.Handler.Parse(Packet packet, Boolean isMultiple) in C:\Users\benjy\Documents\GitHub\WowPacketParser\WowPacketParser\Parsing\Handler.cs:line 149

Dominant language: C#
Stars: 522
Forks: 387
Avg merge: 3d 6h
Merged PRs (30d): 4

Contributor guide

No contributing guide indexed for this repository

First steps

Read the whole issue, then the project's contributing guide.
Comment on the issue to say you are picking it up — it saves two people doing the same work.
Fork the repository and make your change on a branch.
Open a pull request that references the issue number.

Similar issues

Tsavorite.test fails to compile on main: TestBase.cs references Garnet.test.TestUtils, which is not linked into Tsavorite.test.csproj Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

microsoft/garnet#2161 · 2 comments · Opened Sep 20, 2026
v11 update: Validation attributes are no longer experimental Open

:watch: Not Triaged 11.0 fundamentals/subsvc

Difficulty 2/5 1-3 hours Newbie friendliness 92/100

dotnet/AspNetCore.Docs#37699 · Opened Sep 20, 2026
SE 5.3.0 beta 7: In Settings Video player download buttons aren't together Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

SubtitleEdit/subtitleedit#15108 · 1 comment · Opened Sep 20, 2026
Kubernetes get-started create-component.md: Go and C# silently default isMinikube instead of requiring it, unlike TS/Python/Java/HCL Open

area/docs-content Bug pulumi/docs

Difficulty 1/5 1-3 hours Newbie friendliness 94/100

pulumi/docs#21762 · Opened Sep 20, 2026
[ci-scan-feedback] Read ci-fix head.ref via list/get, not search, to close dedup gap Open

agentic-workflows untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

dotnet/runtime#134305 · Opened Sep 20, 2026

More C# issues