# Udp output fails with big json msg **URL:** \ **Category:** Logstash\ **Created:** [August 7, 2017, 10:27am UTC](https://discuss.elastic.co/t/udp-output-fails-with-big-json-msg/96083 "2017-08-07T10:27:50Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![michaell](https://avatars.discourse-cdn.com/v4/letter/m/8e8cbc/32.png) [@michaell](https://discuss.elastic.co/u/michaell)\ **Post date:** [August 7, 2017, 10:27am UTC](https://discuss.elastic.co/t/udp-output-fails-with-big-json-msg/96083/1 "2017-08-07T10:27:50Z")
i am using the udp output plugin to send json messages recieved from http and rabbitmq input. logstash version 5.5.1 everything works fine for small messages. when i hit the 32k json size - logstash crashes (the logstash agent) with the following error: SocketError: send: name or service not known i have found some old posts like this: > [@SocketError: send: name or service not known - logstash 2.3.4 version](https://discuss.elastic.co/t/socketerror-send-name-or-service-not-known-logstash-2-3-4-version/72767): > > Logstash agent configuration: input { heartbeat { type =\> "heartbeat" interval =\> 60 add\_field =\> { "[app.name](http://app.name)" =\> "esper" } } file { path =\> "/home/pg/pg-services/esper/log/json/esper.json" codec =\> json sincedb\_path =\> "/home/release/release\_independent/elk/logstash/data/sincedb/.sincedb" } } output { udp { host =\> "10.166.184.133" port =\> 7400 codec =\> json } } This configuration was working fine for some time and suddenly we are getting the below exception and logstash agene… but no solution found. help will be appreciated. thanks. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 4, 2017, 10:27am UTC](https://discuss.elastic.co/t/udp-output-fails-with-big-json-msg/96083/2 "2017-09-04T10:27:58Z")
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