fix(whatsapp): remove httpsAgent IPv4 constraint causing ENOTFOUND and timeouts on Railway

apps/api/src/routes/whatsapp.ts

@@ -3,9 +3,6 @@ import { WhatsAppService } from '../services/whatsapp';
 import crypto from 'crypto';
 import { z } from 'zod';
 import axios from 'axios';
-import https from 'https';
-
-const httpsAgent = new https.Agent({ family: 4 });
 
 // ─── Zod Schema for WhatsApp Webhook Payload ─────────────────────────────────
 const WhatsAppMessageSchema = z.object({
@@ -152,8 +149,7 @@ export async function whatsappRoutes(fastify: FastifyInstance) {
 
                                     // 1. Get media URL
                                     const metaRes = await axios.get(`https://graph.facebook.com/v18.0/${audioId}`, {
-                                        headers: { 'Authorization': `Bearer ${accessToken}` },
-                                        httpsAgent
+                                        headers: { 'Authorization': `Bearer ${accessToken}` }
                                     });
                                     const meta = metaRes.data;
 
@@ -161,8 +157,7 @@ export async function whatsappRoutes(fastify: FastifyInstance) {
                                     if (meta.url) {
                                         const mediaRes = await axios.get(meta.url, {
                                             headers: { 'Authorization': `Bearer ${accessToken}` },
-                                            responseType: 'arraybuffer',
-                                            httpsAgent
+                                            responseType: 'arraybuffer'
                                         });
                                         const buffer = Buffer.from(mediaRes.data);
 

apps/whatsapp-worker/src/whatsapp-cloud.ts

@@ -8,10 +8,6 @@
  */
 
 import axios from 'axios';
-import https from 'https';
-
-// Force IPv4 resolution for Meta Graph API which fails with IPv6 in Docker on Hugging Face
-const httpsAgent = new https.Agent({ family: 4 });
 
 const GRAPH_API_VERSION = 'v18.0';
 
@@ -45,7 +41,7 @@ export async function sendTextMessage(to: string, text: string): Promise<void> {
     };
 
     try {
-        await axios.post(getBaseUrl(), body, { headers: getHeaders(), httpsAgent });
+        await axios.post(getBaseUrl(), body, { headers: getHeaders() });
     } catch (err: any) {
         throw new Error(`[WhatsApp] sendTextMessage failed: ${err.response?.data?.error?.message || err.message}`);
     }
@@ -74,7 +70,7 @@ export async function sendDocumentMessage(to: string, fileUrl: string, filename:
     };
 
     try {
-        await axios.post(getBaseUrl(), body, { headers: getHeaders(), httpsAgent });
+        await axios.post(getBaseUrl(), body, { headers: getHeaders() });
     } catch (err: any) {
         throw new Error(`[WhatsApp] sendDocumentMessage failed: ${err.response?.data?.error?.message || err.message}`);
     }
@@ -97,7 +93,7 @@ export async function sendAudioMessage(to: string, audioUrl: string): Promise<vo
     };
 
     try {
-        await axios.post(getBaseUrl(), body, { headers: getHeaders(), httpsAgent });
+        await axios.post(getBaseUrl(), body, { headers: getHeaders() });
     } catch (err: any) {
         throw new Error(`[WhatsApp] sendAudioMessage failed: ${err.response?.data?.error?.message || err.message}`);
     }
@@ -137,7 +133,7 @@ export async function sendInteractiveButtonMessage(
     };
 
     try {
-        await axios.post(getBaseUrl(), body, { headers: getHeaders(), httpsAgent });
+        await axios.post(getBaseUrl(), body, { headers: getHeaders() });
     } catch (err: any) {
         throw new Error(`[WhatsApp] sendInteractiveButtonMessage failed: ${err.response?.data?.error?.message || err.message}`);
     }