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fix: apify-mcp-server max listeners warning #113

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Merged
merged 1 commit into from
May 13, 2025
Merged

fix: apify-mcp-server max listeners warning #113

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17 changes: 10 additions & 7 deletions src/mcp/server.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,7 @@ export class ActorsMcpServer {
public readonly tools: Map<string, ToolWrap>;
private readonly options: ActorsMcpServerOptions;

constructor(options: ActorsMcpServerOptions = {}) {
constructor(options: ActorsMcpServerOptions = {}, setupSIGINTHandler = true) {
this.options = {
enableAddingActors: options.enableAddingActors ?? false,
enableDefaultActors: options.enableDefaultActors ?? true, // Default to true for backward compatibility
Expand All @@ -63,7 +63,7 @@ export class ActorsMcpServer {
},
);
this.tools = new Map();
this.setupErrorHandling();
this.setupErrorHandling(setupSIGINTHandler);
this.setupToolHandlers();

// Add default tools
Expand Down Expand Up @@ -160,14 +160,17 @@ export class ActorsMcpServer {
return Array.from(this.tools.keys());
}

private setupErrorHandling(): void {
private setupErrorHandling(setupSIGINTHandler = true): void {
this.server.onerror = (error) => {
console.error('[MCP Error]', error); // eslint-disable-line no-console
};
process.on('SIGINT', async () => {
await this.server.close();
process.exit(0);
});
// Allow disable of SIGINT handler to prevent max listeners warning
if (setupSIGINTHandler) {
process.on('SIGINT', async () => {
await this.server.close();
process.exit(0);
});
}
}

private setupToolHandlers(): void {
Expand Down