Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Error: Can't set headers after they are sent. #167

Open
janvda opened this issue Nov 27, 2018 · 5 comments
Open

Error: Can't set headers after they are sent. #167

janvda opened this issue Nov 27, 2018 · 5 comments

Comments

@janvda
Copy link

janvda commented Nov 27, 2018 •
edited

Hi

I have tried to follow the instructions specified in the tutorial https://developer.ibm.com/node/2017/07/26/visualize-node-red-flow-performance-using-node-application-metrics/ but I get below error log:

I have added the following 2 instructions after the first line in my red.js which are causing the error:

var dash = require('appmetrics-dash');
dash.attach();

The following release specifies the setup of the container node-red-test that has this problem : https://github.com/janvda/balena-node-red-mqtt-nginx-TIG-stack/tree/appmetrics-dash-error

27.11.18 23:17:53 (+0100)  node-red-test  /usr/bin/entry.sh: line 29: /etc/hostname: Permission denied
27.11.18 23:17:53 (+0100)  node-red-test  /usr/bin/entry.sh: line 30: /etc/hosts: Permission denied
27.11.18 23:17:53 (+0100)  node-red-test  hostname: you must be root to change the host name
27.11.18 23:17:53 (+0100)  node-red-test  mount: only root can use "--types" option
27.11.18 23:17:53 (+0100)  node-red-test  mount: only root can use "--move" option
27.11.18 23:17:53 (+0100)  node-red-test  mount: only root can use "--move" option
27.11.18 23:17:53 (+0100)  node-red-test  mount: only root can use "--move" option
27.11.18 23:17:53 (+0100)  node-red-test  mount: only root can use "--move" option
27.11.18 23:17:53 (+0100)  node-red-test  umount: /dev: umount failed: Operation not permitted
27.11.18 23:17:53 (+0100)  node-red-test  mount: only root can use "--move" option
27.11.18 23:17:53 (+0100)  node-red-test  ln: cannot remove ‘/dev/ptmx’: Permission denied
27.11.18 23:17:53 (+0100)  node-red-test  mount: only root can use "--types" option
27.11.18 23:17:53 (+0100)  node-red-test  /sbin/udevd
27.11.18 23:17:55 (+0100)  node-red-test  npm info it worked if it ends with ok
27.11.18 23:17:55 (+0100)  node-red-test  npm info using npm@5.0.3
27.11.18 23:17:55 (+0100)  node-red-test  npm info using node@v8.1.3
npm info lifecycle node-red-docker@1.0.0~prestart: node-red-docker@1.0.0
npm info lifecycle node-red-docker@1.0.0~start: node-red-docker@1.0.0
27.11.18 23:17:56 (+0100)  node-red-test
27.11.18 23:17:56 (+0100)  node-red-test  > node-red-docker@1.0.0 start /usr/src/node-red
27.11.18 23:17:56 (+0100)  node-red-test  > node $NODE_OPTIONS node_modules/node-red/red.js -v $FLOWS "--userDir" "/data"
27.11.18 23:17:56 (+0100)  node-red-test
27.11.18 23:17:56 (+0100)  node-red-test  [Tue Nov 27 22:17:56 2018] com.ibm.diagnostics.healthcenter.loader INFO: Node Application Metrics 4.0.1.201811271705 (Agent Core 3.2.9)
27.11.18 23:18:00 (+0100)  node-red-test  [Tue Nov 27 22:18:00 2018] com.ibm.diagnostics.healthcenter.mqtt INFO: Connecting to broker localhost:1883
27.11.18 23:18:01 (+0100)  node-red-test  27 Nov 22:18:01 - [info]
27.11.18 23:18:01 (+0100)  node-red-test
27.11.18 23:18:01 (+0100)  node-red-test  Welcome to Node-RED
27.11.18 23:18:01 (+0100)  node-red-test  ===================
27.11.18 23:18:01 (+0100)  node-red-test
27.11.18 23:18:01 (+0100)  node-red-test  27 Nov 22:18:01 - [info] Node-RED version: v0.19.5
27.11.18 23:18:01 (+0100)  node-red-test  27 Nov 22:18:01 - [info] Node.js  version: v8.1.3
27.11.18 23:18:01 (+0100)  node-red-test  27 Nov 22:18:01 - [info] Linux 4.14.39 arm LE
27.11.18 23:18:03 (+0100)  node-red-test  27 Nov 22:18:03 - [info] Loading palette nodes
27.11.18 23:18:07 (+0100)  node-red-test  27 Nov 22:18:07 - [info] Dashboard version 2.11.0 started at /node-red-test/ui
27.11.18 23:18:07 (+0100)  node-red-test  27 Nov 22:18:07 - [info] Settings file  : /data/settings.js
27.11.18 23:18:07 (+0100)  node-red-test  27 Nov 22:18:07 - [info] Context store  : 'default' [module=memory]
27.11.18 23:18:07 (+0100)  node-red-test  27 Nov 22:18:07 - [info] User directory : /data
27.11.18 23:18:07 (+0100)  node-red-test  27 Nov 22:18:07 - [warn] No active project : using default flows file
27.11.18 23:18:07 (+0100)  node-red-test  27 Nov 22:18:07 - [info] Flows file     : /data/flows.json
27.11.18 23:18:07 (+0100)  node-red-test  27 Nov 22:18:07 - [info] Server now running at http://127.0.0.1:1880/node-red-test/
27.11.18 23:18:07 (+0100)  node-red-test  27 Nov 22:18:07 - [warn]
27.11.18 23:18:07 (+0100)  node-red-test
27.11.18 23:18:07 (+0100)  node-red-test  ---------------------------------------------------------------------
27.11.18 23:18:07 (+0100)  node-red-test  Your flow credentials file is encrypted using a system-generated key.
27.11.18 23:18:07 (+0100)  node-red-test
27.11.18 23:18:07 (+0100)  node-red-test  If the system-generated key is lost for any reason, your credentials
27.11.18 23:18:07 (+0100)  node-red-test  file will not be recoverable, you will have to delete it and re-enter
27.11.18 23:18:07 (+0100)  node-red-test  your credentials.
27.11.18 23:18:07 (+0100)  node-red-test
27.11.18 23:18:07 (+0100)  node-red-test  You should set your own key using the 'credentialSecret' option in
27.11.18 23:18:07 (+0100)  node-red-test  your settings file. Node-RED will then re-encrypt your credentials
27.11.18 23:18:07 (+0100)  node-red-test  file using your chosen key the next time you deploy a change.
27.11.18 23:18:07 (+0100)  node-red-test  ---------------------------------------------------------------------
27.11.18 23:18:07 (+0100)  node-red-test
27.11.18 23:18:07 (+0100)  node-red-test  27 Nov 22:18:07 - [info] Starting flows
27.11.18 23:18:08 (+0100)  node-red-test  27 Nov 22:18:08 - [info] Started flows
27.11.18 23:18:08 (+0100)  node-red-test  27 Nov 22:18:08 - [info] [mqtt-broker:mqtt broker] Connected to broker: mqtt://mqtt:1883
27.11.18 23:18:10 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:10 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:10 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:10 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:10 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:10 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:10 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:10 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:10 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:10 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:10 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:10 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:10 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:10 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:10 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:10 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:10 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:10 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:10 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:10 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:10 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:10 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:10 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:10 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:10 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:10 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:10 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:10 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:10 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:10 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:10 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:10 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:10 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
27.11.18 23:18:12 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:12 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:12 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:12 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:12 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:12 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:12 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:12 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:12 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:12 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:12 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:12 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:12 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:12 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:12 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:12 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:12 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:12 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:12 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:12 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:12 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:12 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:12 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:12 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:12 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:12 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:12 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:12 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:12 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:12 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:12 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:12 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:12 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
27.11.18 23:18:14 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:14 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:14 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:14 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:14 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:14 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:14 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:14 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:14 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:14 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:14 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:14 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:14 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:14 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:14 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:14 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:14 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:14 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:14 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:14 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:14 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:14 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:14 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:14 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:14 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:14 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:14 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:14 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:14 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:14 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:14 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:14 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:14 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
27.11.18 23:18:16 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:16 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:16 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:16 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:16 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:16 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:16 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:16 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:16 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:16 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:16 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:16 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:16 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:16 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:16 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:16 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:16 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:16 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:16 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:16 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:16 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:16 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:16 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:16 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:16 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:16 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:16 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:16 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:16 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:16 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:16 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:16 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:16 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
27.11.18 23:18:18 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:18 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:18 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:18 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:18 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:18 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:18 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:18 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:18 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:18 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:18 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:18 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:18 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:18 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:18 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:18 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:18 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:18 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:18 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:18 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:18 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:18 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:18 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:18 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:18 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:18 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:18 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:18 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:18 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:18 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:18 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:18 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:18 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
27.11.18 23:18:20 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:20 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:20 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:20 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:20 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:20 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:20 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:20 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:20 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:20 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:20 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:20 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:20 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:20 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:20 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:20 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:20 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:20 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:20 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:20 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:20 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:20 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:20 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:20 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:20 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:20 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:20 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:20 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:20 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:20 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:20 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:20 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:20 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
27.11.18 23:18:22 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:22 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:22 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:22 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:22 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:22 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:22 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:22 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:22 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:22 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:22 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:22 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:22 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:22 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:22 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:22 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:22 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:22 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:22 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:22 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:22 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:22 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:22 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:22 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:22 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:22 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:22 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:22 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:22 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:22 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:22 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:22 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:22 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
27.11.18 23:18:24 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:24 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:24 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:24 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:24 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:24 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:24 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:24 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:24 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:24 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:24 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:24 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:24 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:24 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:24 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:24 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:24 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:24 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:24 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:24 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:24 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:24 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:24 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:24 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:24 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:24 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:24 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:24 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:24 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:24 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:24 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:24 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:24 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
27.11.18 23:18:26 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:26 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:26 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:26 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:26 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:26 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:26 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:26 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:26 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:26 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:26 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:26 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:26 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:26 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:26 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:26 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:26 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:26 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:26 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:26 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:26 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:26 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:26 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:26 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:26 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:26 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:26 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:26 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:26 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:26 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:26 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:26 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:26 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
27.11.18 23:18:28 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:28 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:28 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:28 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:28 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:28 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:28 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:28 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:28 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:28 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:28 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:28 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:28 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:28 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:28 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:28 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:28 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:28 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:28 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:28 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:28 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:28 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:28 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:28 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:28 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:28 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:28 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:28 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:28 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:28 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:28 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:28 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:28 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
27.11.18 23:18:30 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:30 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:30 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:30 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:30 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:30 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:30 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:30 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:30 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:30 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:30 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:30 (+0100)  node-red-test  Error: Can't set headers after they are sent.
27.11.18 23:18:30 (+0100)  node-red-test      at validateHeader (_http_outgoing.js:504:11)
27.11.18 23:18:30 (+0100)  node-red-test      at ServerResponse.setHeader (_http_outgoing.js:511:3)
27.11.18 23:18:30 (+0100)  node-red-test      at expressInit (/usr/src/node-red/node_modules/express/lib/middleware/init.js:30:42)
27.11.18 23:18:30 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:30 (+0100)  node-red-test      at trim_prefix (/usr/src/node-red/node_modules/express/lib/router/index.js:317:13)
27.11.18 23:18:30 (+0100)  node-red-test      at /usr/src/node-red/node_modules/express/lib/router/index.js:284:7
27.11.18 23:18:30 (+0100)  node-red-test      at Function.process_params (/usr/src/node-red/node_modules/express/lib/router/index.js:335:12)
27.11.18 23:18:30 (+0100)  node-red-test      at next (/usr/src/node-red/node_modules/express/lib/router/index.js:275:10)
27.11.18 23:18:30 (+0100)  node-red-test      at query (/usr/src/node-red/node_modules/express/lib/middleware/query.js:45:5)
27.11.18 23:18:30 (+0100)  node-red-test      at Layer.handle [as handle_request] (/usr/src/node-red/node_modules/express/lib/router/layer.js:95:5)
27.11.18 23:18:30 (+0100)  node-red-test  Error: Can't render headers after they are sent to the client
27.11.18 23:18:30 (+0100)  node-red-test      at ServerResponse.writeHead (_http_server.js:214:15)
27.11.18 23:18:30 (+0100)  node-red-test      at XHR.Polling.onPollRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:85:9)
27.11.18 23:18:30 (+0100)  node-red-test      at XHR.Polling.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling.js:65:10)
27.11.18 23:18:30 (+0100)  node-red-test      at XHR.onRequest (/usr/src/node-red/node_modules/engine.io/lib/transports/polling-xhr.js:46:33)
27.11.18 23:18:30 (+0100)  node-red-test      at /usr/src/node-red/node_modules/engine.io/lib/server.js:230:46
27.11.18 23:18:30 (+0100)  node-red-test      at Server.verify (/usr/src/node-red/node_modules/engine.io/lib/server.js:171:3)
27.11.18 23:18:30 (+0100)  node-red-test      at Server.handleRequest (/usr/src/node-red/node_modules/engine.io/lib/server.js:222:8)
27.11.18 23:18:30 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/engine.io/lib/server.js:467:14)
27.11.18 23:18:30 (+0100)  node-red-test      at Server.<anonymous> (/usr/src/node-red/node_modules/socket.io/lib/index.js:343:16)
27.11.18 23:18:30 (+0100)  node-red-test      at /usr/src/node-red/node_modules/appmetrics-dash/lib/appmetrics-dash.js:197:16
@janvda
Copy link
Author

janvda commented Nov 27, 2018

This might be a similar problem as #151

@janvda janvda mentioned this issue Nov 27, 2018
Open
@ddresch
Copy link

ddresch commented Dec 15, 2018

Same issue here. I tried multiple node versions no difference.

@elasticroentgen
Copy link

Had the same issue when using .attach() along with .monitor()
I removed it and only kept .monitor()

Seems to work fine that way.

@knolleary
Copy link

Hi - is there anything we can do to help resolve this? It has been a long standing issue and we (in the Node-RED project) keep getting asked why it isn't working.

@chameleonbr
Copy link

chameleonbr commented May 12, 2021 •
edited

@knolleary I was able to make appmetrics work on nodered just like this:

var dash = require('appmetrics-dash');
dash.monitor({port:3335}); // different port

And making NodeRED running on the different port.
Taking advantage of the issue, In nodered, there is a way to capture a node's input and output events and throw this to something like jaeger?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
5 participants
@knolleary @elasticroentgen @chameleonbr @ddresch @janvda