# Logstash HTTP plugin details
**URL:** https://discuss.elastic.co/t/logstash-http-plugin-details/93439
**Category:** Logstash
**Created:** [July 17, 2017, 5:48pm UTC](https://discuss.elastic.co/t/logstash-http-plugin-details/93439 "2017-07-17T17:48:58Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Bob04](https://discuss.elastic.co/u/Bob04)
#### Post date: [July 17, 2017, 5:48pm UTC](https://discuss.elastic.co/t/logstash-http-plugin-details/93439/1 "2017-07-17T17:48:58Z")
I have a question about Logstash `http` input plugin:
What is the format of URL for sending POST request to Logstash so Logstash can receive JSON message via `http` plugin?
Is it something like this: `server_name:tcp_port/index` ?
---
### Author:  [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [July 18, 2017, 2:12pm UTC](https://discuss.elastic.co/t/logstash-http-plugin-details/93439/2 "2017-07-18T14:12:43Z")
> Is it something like this: server\_name:tcp\_port/index ?
Yes, and the "index" part in your example can be any string. The plugin will grab all HTTP requests sent to the port.
---
### Author:  [@Bob04](https://discuss.elastic.co/u/Bob04)
#### Post date: [July 18, 2017, 4:34pm UTC](https://discuss.elastic.co/t/logstash-http-plugin-details/93439/3 "2017-07-18T16:34:54Z")
@magnusbaeck Thank you.
I am trying to send HTTP request with Java:
```
HttpClient httpClient = HttpClientBuilder.create().build();
try {
HttpPost request = new HttpPost("http://host_name:31311/test");
StringEntity params = new StringEntity("{\"field\":\"value\"}");
request.addHeader("content-type", "application/json");
request.setEntity(params);
HttpResponse response = httpClient.execute(request);
} catch (Exception ex) {
}
```
But the data was not sent to Logstash for some reason.
Do you have any ideas what is wrong in this approach?
---
### Author:  [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [July 18, 2017, 5:22pm UTC](https://discuss.elastic.co/t/logstash-http-plugin-details/93439/4 "2017-07-18T17:22:48Z")
So what happens? Does the code raise any exceptions or does the program think things are okay?
Testing and debugging things like this with a tool like curl is recommended.
---
### Author:  [@Bob04](https://discuss.elastic.co/u/Bob04)
#### Post date: [July 18, 2017, 5:41pm UTC](https://discuss.elastic.co/t/logstash-http-plugin-details/93439/5 "2017-07-18T17:41:38Z")
Actually, yes. There is the following exception thrown:
```
org.apache.http.conn.HttpHostConnectException: Connect to host_name:31311 [host_name] failed: Connection timed out: connect
at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:140)
```
I am on Windows, I tried command `open host_name 31311` but I got this:
```
Connecting To host_name...Could not open connection to the host on port 31311: Connect failed
```
This is strange, because I am able to send data via HTTP request from another app from the same machine.
Do you have any thoughts about that?
---
### Author:  [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [July 18, 2017, 6:25pm UTC](https://discuss.elastic.co/t/logstash-http-plugin-details/93439/6 "2017-07-18T18:25:34Z")
Firewall issue maybe, I don't know.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 15, 2017, 6:25pm UTC](https://discuss.elastic.co/t/logstash-http-plugin-details/93439/7 "2017-08-15T18:25:55Z")
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