Function ExtractSessionID

sdk/cliproxy/auth/selector.go:514–517

ExtractSessionID extracts session identifier from multiple sources. Priority order: 1. metadata.user_id (Claude Code format with _session_{uuid}) - highest priority for Claude Code clients 2. X-Session-ID header 3. Session_id header (Codex) 4. X-Client-Request-Id header (PI) 5. metadata.user_id (non

(headers http.Header, payload []byte, metadata map[string]any)

//  6. conversation_id field in request body
//  7. Stable hash from first few messages content (fallback)
func ExtractSessionID(headers http.Header, payload []byte, metadata map[string]any) string {
	primary, _ := extractSessionIDs(headers, payload, metadata)
	return primary
}

// extractSessionIDs returns (primaryID, fallbackID) for session affinity.
// primaryID: full hash including assistant response (stable after first turn)