find-INetworkGameServer_IsReserved

Find INetworkGameServer_IsReserved (final-guarantee fallback)

Recover the virtual function INetworkGameServer::IsReserved in CS2 engine2.dll / libengine2.so using IDA Pro MCP tools. This is the Agent fallback for the find-INetworkGameServer_IsReserved skill: it runs only when the preprocessor script returned failure (almost always a transient LLM error, or the predecessor's call structure moved).

Realworld Function References

Read the platform-relevant reference YAMLs before searching in IDA. Treat their addresses as reference-build values only; verify against the current binary.

• Windows baseline: ida_preprocessor_scripts/references/engine/CNetworkGameServerBase_RecalculateTags.windows.yaml
• Linux baseline: ida_preprocessor_scripts/references/engine/CNetworkGameServerBase_RecalculateTags.linux.yaml

Step 1. Load and decompile the predecessor

ALWAYS Use SKILL /get-func-from-yaml with func_name=CNetworkGameServerBase_RecalculateTags to obtain its func_va. If it returns an error, STOP and report to user (this fallback cannot run without the predecessor).

Decompile it:

mcp__ida-pro-mcp__decompile addr="<CNetworkGameServerBase_RecalculateTags.func_va>"

Step 2. Locate the vtable-slot call to the target

CNetworkGameServerBase::RecalculateTags builds the server tag string (it logs "Tags string is too long: %s\n" on overflow). Look for the virtual call on the server object (this or the interface pointer derived from it) whose boolean result reports whether the server is reserved and feeds the tag-building logic. Anchor on the semantic fingerprint -- a call qword ptr [reg+disp] (Windows may hoist the slot into a register with mov) on the server object, with a boolean result gating tag text -- not on a fixed offset. Use the reference YAML annotations (INetworkGameServer_IsReserved comment tags) to confirm which call.

Do not pick sibling slots on the same object (for example GetServerState).

Step 3. Resolve the vfunc slot and write the YAML