fix(errors): log erros if the Trace servers cannot be reached

Author: gergelyke

lib/agent/api/index.js

@@ -77,6 +77,10 @@ CollectorApi.prototype._send = function (destinationUrl, data) {
   })
 
   debug('sending data to trace servers: ', destinationUrl, payload)
+  req.on('error', function (error) {
+    console.error('There was an error connecting to the Trace servers. Make sure your servers can reach trace-collector-api.risingstack.com')
+    debug('error connecting to the Trace servers', error)
+  })
   req.write(payload)
   req.end()
 }
@@ -221,6 +225,10 @@ CollectorApi.prototype.getService = function (cb) {
 
   debug('getting serviceKey with payload:', payload)
 
+  req.on('error', function (error) {
+    console.error('There was an error connecting to the Trace servers. Make sure your servers can reach trace-collector-api.risingstack.com')
+    debug('error connecting to the Trace servers', error)
+  })
   req.write(payload)
   req.end()
 }