Add better timeout handling in webhook saving

There's now a 10s timeout on webhook tests. If webhook tests fail, we
show a quick curl line that'll help check whether the webhook is working
correctly.

httpd_site.py

@@ -106,7 +106,7 @@ def render_POST(self, request):
 
             if webhook and not is_webhook_valid(webhook):
                 response['Error'] = 3
-                raise Exception('Invalid webhook supplied')
+                raise Exception('Invalid webhook supplied. Confirm you can POST to this URL.')
 
             alert_email_enabled = False if not email else True
             alert_webhook_enabled = False if not webhook else True

queries.py

@@ -502,9 +502,15 @@ def is_webhook_valid(url):
                "channel": "HTTP",
                "time": datetime.datetime.now().strftime('%Y-%m-%d %T') }
     try:
-        response = requests.post(url, simplejson.dumps(payload), headers={'content-type': 'application/json'})
+        response = requests.post(url,
+                                 simplejson.dumps(payload),
+                                 headers={'content-type': 'application/json'},
+                                 timeout=10)
         response.raise_for_status()
         return True
+    except requests.exceptions.Timeout as e:
+        log.err('Timed out sending test payload to webhook: {url}'.format(url=url))
+        return False
     except requests.exceptions.RequestException as e:
         log.err('Failed sending test payload to webhook: {url} with error {error}'.format(url=url,error=e))
         return False

templates/generate_new.html

@@ -965,7 +965,7 @@ <h3>Your AWS key token is active!</h3>
                           $('#memo_errors').show();
                           $('textarea[name=memo]').addClass('error-outline').removeClass('success-outline');
                       } else if (data['Error'] == '3'){
-                          $('#endpoints_errors').html('Invalid webhook supplied');
+                          $('#endpoints_errors').html('<p>Invalid webhook supplied, confirm you can POST to this URL with:</p><p><pre>curl -H "Content-Type: application/json" -d \'{"":""}\' URL</pre></p>');
                           $('#endpoints_errors').show();
                           $('#endpoints').addClass('error-outline').removeClass('success-outline');
                       } else {

templates/static/styles.css

@@ -407,6 +407,15 @@
         border-radius: 6px;
         margin-bottom: 24px;
       }
+      #endpoints_errors {
+        border: 1px solid red;
+        margin: 24px 0px;
+        padding: 0px 5px;
+      }
+      #endpoints_errors pre {
+        color: #eceeef;
+        background: firebrick;
+      }
       .map{
         position: relative;
         margin-bottom: 10px;