# groonga - An open-source fulltext search engine and column store.

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# 7.1.6. Groonga HTTP server

## 7.1.6.1. Name

Groonga HTTP server

## 7.1.6.2. Synopsis

    groonga -d --protocol http DB_PATH

## 7.1.6.3. Summary

You can communicate by HTTP if you specify `http` to `--protocol` option. And output a file that is put under the path, and correspond to specified URI to HTTP request if you specify static page path by `--document-root`.

Groonga has an Web-based administration tool implemented with HTML and JavaScript. If you don't specify `--document-root`, regarded as administration tool installed path is specified, so you can use administration tool to access `http://HOSTNAME:PORT/` in Web browser.

## 7.1.6.4. Command

You can use the same commands of Groonga that starts of the other mode to Groonga server that starts to specify `http`.

A command takes the arguments. An argument has a name. And there are special arguments `output_type` and `command_version`.

In standalone mode or client mode, a command is specified by the following format.

> Format 1: COMMAND_NAME VALUE1 VALUE2,..

> Format 2: COMMAND_NAME --PARAMETER_NAME1 VALUE1 --PARAMETER_NAME2 VALUE2,..

Format 1 and Format 2 are possible to mix. Output type is specified by `output_type` in the formats.

In HTTP server mode, the following formats to specify command:

    Format: /d/COMMAND_NAME.OUTPUT_TYPE?ARGUMENT_NAME1=VALUE1&ARGUMENT_NAME2=VALUE2&...

But, they need URL encode for command names, arguments names and values.

You can use GET method only.

You can specify JSON, TSV and XML to output type.

`command_version` is specified for command specification compatibility. See コマンドバージョン for details.

## 7.1.6.5. Return value

The execution result is output that follows output type specification by the command.

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