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Fix: log HTTP connection errors to stderr for operator visibility #3514

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lpcox merged 1 commit into from
Apr 10, 2026
Merged

Fix: log HTTP connection errors to stderr for operator visibility #3514

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1 change: 1 addition & 0 deletions internal/launcher/launcher.go
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Original file line number Diff line number Diff line change
Expand Up @@ -143,6 +143,7 @@ func GetOrLaunch(l *Launcher, serverID string) (*mcp.Connection, error) {
// Create an HTTP connection
conn, err := mcp.NewHTTPConnection(l.ctx, serverID, serverCfg.URL, serverCfg.Headers, oidcProvider, oidcAudience, l.config.Gateway.HTTPKeepaliveInterval())
if err != nil {
log.Printf("FAILED to create HTTP connection for server %q: %v", serverID, err)

Copilot AI Apr 10, 2026

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This new stderr log prints the raw err from mcp.NewHTTPConnection. That error chain can include full HTTP response bodies (e.g., initialize failed: status=..., body=...) and potentially large or sensitive data, so writing it verbatim to stderr/CI logs risks secret leakage and noisy output. Consider sanitizing/redacting and truncating the error string before printing (and keeping the console format consistent with other launcher stderr logs, e.g. using the [LAUNCHER] prefix).

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logger.LogErrorWithServer(serverID, "backend", "Failed to create HTTP connection: %s, error=%v", serverID, err)
l.recordError(serverID, err.Error())
return nil, fmt.Errorf("failed to create HTTP connection: %w", err)
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