error handling when server fails to start

api/engine.py

@@ -21,7 +21,7 @@ from flask import Response
 from flask import make_response
 from core.alert import write_to_api_console
 from core.alert import messages
-from core.die import die_success
+from core.die import die_success, die_failure
 from core.time import now
 from api.api_core import structure
 from api.api_core import get_value
@@ -579,6 +579,7 @@ def start_api_subprocess(options):
         "language": options.language,
         "options": options
     }
+    try:
         if options.api_cert and options.api_cert_key:
             app.run(
                 host=options.api_hostname,
@@ -598,6 +599,8 @@ def start_api_subprocess(options):
                 ssl_context='adhoc',
                 threaded=True
             )
+    except Exception as e:
+        die_failure(str(e))
 
 
 def start_api_server(options):