Fix SSL

backend/whatsapp.py

@@ -3,6 +3,7 @@ WhatsApp Cloud API Service
 Handles sending WhatsApp messages via Meta's API
 """
 import os
+import ssl
 import httpx
 import certifi
 import re
@@ -14,6 +15,34 @@ from datetime import datetime
 logger = logging.getLogger(__name__)
 
 
+def create_http_client() -> httpx.AsyncClient:
+    """
+    Create an httpx client with robust SSL configuration.
+    Tries to use system certificates first, falls back to certifi.
+    """
+    try:
+        # Try using system SSL context with certifi certificates
+        ssl_context = ssl.create_default_context(cafile=certifi.where())
+        # Enable hostname checking but allow some TLS flexibility
+        ssl_context.check_hostname = True
+        ssl_context.verify_mode = ssl.CERT_REQUIRED
+        # Use more compatible TLS versions
+        ssl_context.minimum_version = ssl.TLSVersion.TLSv1_2
+        
+        return httpx.AsyncClient(verify=ssl_context, timeout=30.0)
+    except Exception as e:
+        logger.warning(f"[WhatsApp] Failed to create SSL context with certifi: {e}. Trying default SSL.")
+        try:
+            # Fallback to default SSL context
+            ssl_context = ssl.create_default_context()
+            ssl_context.minimum_version = ssl.TLSVersion.TLSv1_2
+            return httpx.AsyncClient(verify=ssl_context, timeout=30.0)
+        except Exception as e2:
+            logger.error(f"[WhatsApp] Failed to create SSL context: {e2}. Using basic client.")
+            # Last resort fallback - httpx will use its own SSL handling
+            return httpx.AsyncClient(timeout=30.0)
+
+
 class WhatsAppError(Exception):
     """Custom exception for WhatsApp API errors"""
     pass
@@ -166,7 +195,7 @@ class WhatsAppService:
         url = f"{self.base_url}/{self.phone_number_id}/messages"
         
         try:
-            async with httpx.AsyncClient(verify=certifi.where()) as client:
+            async with create_http_client() as client:
                 response = await client.post(
                     url,
                     json=payload,
@@ -296,7 +325,7 @@ class WhatsAppService:
         print("=" * 80 + "\n")
         
         try:
-            async with httpx.AsyncClient(verify=certifi.where()) as client:
+            async with create_http_client() as client:
                 response = await client.post(
                     url,
                     json=payload,
@@ -559,7 +588,7 @@ class WhatsAppService:
 
         url = f"{self.base_url}/{self.phone_number_id}/messages"
         try:
-            async with httpx.AsyncClient(verify=certifi.where()) as client:
+            async with create_http_client() as client:
                 response = await client.post(
                     url,
                     json=payload,