{"action":"created","issue":{"url":"https://api.github.com/repos/PX4/Firmware/issues/3084","labels_url":"https://api.github.com/repos/PX4/Firmware/issues/3084/labels{/name}","comments_url":"https://api.github.com/repos/PX4/Firmware/issues/3084/comments","events_url":"https://api.github.com/repos/PX4/Firmware/issues/3084/events","html_url":"https://github.com/PX4/Firmware/issues/3084","id":113702715,"number":3084,"title":"Gazebo simulator: No MAVLink data received / sent, no output","user":{"login":"LorenzMeier","id":1208119,"avatar_url":"https://avatars.githubusercontent.com/u/1208119?v=3","gravatar_id":"","url":"https://api.github.com/users/LorenzMeier","html_url":"https://github.com/LorenzMeier","followers_url":"https://api.github.com/users/LorenzMeier/followers","following_url":"https://api.github.com/users/LorenzMeier/following{/other_user}","gists_url":"https://api.github.com/users/LorenzMeier/gists{/gist_id}","starred_url":"https://api.github.com/users/LorenzMeier/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/LorenzMeier/subscriptions","organizations_url":"https://api.github.com/users/LorenzMeier/orgs","repos_url":"https://api.github.com/users/LorenzMeier/repos","events_url":"https://api.github.com/users/LorenzMeier/events{/privacy}","received_events_url":"https://api.github.com/users/LorenzMeier/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":{"url":"https://api.github.com/repos/PX4/Firmware/milestones/8","html_url":"https://github.com/PX4/Firmware/milestones/Release%20v1.1.0","labels_url":"https://api.github.com/repos/PX4/Firmware/milestones/8/labels","id":1183652,"number":8,"title":"Release v1.1.0","description":"This release should add functionality currently held back like the unified sensor fault detection facility and delta angles for the EKF.","creator":{"login":"LorenzMeier","id":1208119,"avatar_url":"https://avatars.githubusercontent.com/u/1208119?v=3","gravatar_id":"","url":"https://api.github.com/users/LorenzMeier","html_url":"https://github.com/LorenzMeier","followers_url":"https://api.github.com/users/LorenzMeier/followers","following_url":"https://api.github.com/users/LorenzMeier/following{/other_user}","gists_url":"https://api.github.com/users/LorenzMeier/gists{/gist_id}","starred_url":"https://api.github.com/users/LorenzMeier/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/LorenzMeier/subscriptions","organizations_url":"https://api.github.com/users/LorenzMeier/orgs","repos_url":"https://api.github.com/users/LorenzMeier/repos","events_url":"https://api.github.com/users/LorenzMeier/events{/privacy}","received_events_url":"https://api.github.com/users/LorenzMeier/received_events","type":"User","site_admin":false},"open_issues":23,"closed_issues":70,"state":"open","created_at":"2015-06-27T14:09:11Z","updated_at":"2015-11-25T21:07:42Z","due_on":"2015-10-29T23:00:00Z","closed_at":null},"comments":4,"created_at":"2015-10-27T22:23:58Z","updated_at":"2015-11-25T21:07:42Z","closed_at":"2015-11-25T21:07:42Z","body":"I put this instrumentation into the plugin:\r\n\r\n```diff\r\ndiff --git a/src/gazebo_mavlink_interface.cpp b/src/gazebo_mavlink_interface.cpp\r\nindex 4737ed0..eedfbd8 100644\r\n--- a/src/gazebo_mavlink_interface.cpp\r\n+++ b/src/gazebo_mavlink_interface.cpp\r\n@@ -79,12 +79,16 @@ void GazeboMavlinkInterface::Load(physics::ModelPtr _model, sdf::ElementPtr _sdf\r\n   // udp socket data\r\n   const int _port = UDP_PORT;\r\n \r\n+  printf(\"GAZEBO: SOCKET TRY\");\r\n+\r\n   // try to setup udp socket for communcation with simulator\r\n   if ((_fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {\r\n     printf(\"create socket failed\\n\");\r\n     return;\r\n   }\r\n \r\n+  printf(\"GAZEBO: SOCKET CREATED\");\r\n+\r\n   _srcaddr.sin_family = AF_INET;\r\n   _srcaddr.sin_addr.s_addr = htonl(INADDR_ANY);\r\n   _srcaddr.sin_port = htons(UDP_PORT);\r\n@@ -305,6 +309,7 @@ void GazeboMavlinkInterface::ImuCallback(ImuPtr& imu_message) {\r\n \r\n void GazeboMavlinkInterface::pollForMAVLinkMessages()\r\n {\r\n+  printf(\"GAZEBO: POLL\");\r\n   int len;\r\n   ::poll(&fds[0], (sizeof(fds[0])/sizeof(fds[0])), 0);\r\n   if (fds[0].revents & POLLIN) {\r\n```\r\n\r\nIt looks like the plugin is not loaded. This is how the model tree looks like for me:\r\n<img width=\"256\" alt=\"screen shot 2015-10-27 at 23 23 19\" src=\"https://cloud.githubusercontent.com/assets/1208119/10774494/c65d2bc8-7d01-11e5-8522-9d7e6352e6d3.png\">\r\n"},"comment":{"url":"https://api.github.com/repos/PX4/Firmware/issues/comments/159731671","html_url":"https://github.com/PX4/Firmware/issues/3084#issuecomment-159731671","issue_url":"https://api.github.com/repos/PX4/Firmware/issues/3084","id":159731671,"user":{"login":"LorenzMeier","id":1208119,"avatar_url":"https://avatars.githubusercontent.com/u/1208119?v=3","gravatar_id":"","url":"https://api.github.com/users/LorenzMeier","html_url":"https://github.com/LorenzMeier","followers_url":"https://api.github.com/users/LorenzMeier/followers","following_url":"https://api.github.com/users/LorenzMeier/following{/other_user}","gists_url":"https://api.github.com/users/LorenzMeier/gists{/gist_id}","starred_url":"https://api.github.com/users/LorenzMeier/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/LorenzMeier/subscriptions","organizations_url":"https://api.github.com/users/LorenzMeier/orgs","repos_url":"https://api.github.com/users/LorenzMeier/repos","events_url":"https://api.github.com/users/LorenzMeier/events{/privacy}","received_events_url":"https://api.github.com/users/LorenzMeier/received_events","type":"User","site_admin":false},"created_at":"2015-11-25T21:07:41Z","updated_at":"2015-11-25T21:07:41Z","body":"Fixed."}}