# RXS_GetEnvVar()

This subprocedure is used to retrieve Apache server's environment variables as well as some incoming HTTP headers. This is typically used in a scenario when you are hosting a web service.

* AUTH_TYPE
* CGI_ASCII_CCSID
* CGI_EBCDIC_CCSID
* CONTENT_LENGTH
* CONTENT_TYPE
* GATEWAY_INTERFACE
* HTTP_ACCEPT
* HTTP_USER_AGENT
* PATH_INFO
* PATH_TRANSLATED
* QUERY_STRING
* REMOTE_ADDR
* REMOTE_HOST
* REMOTE_IDENT
* REQUEST_METHOD
* REMOTE_USER
* SCRIPT_NAME
* SERVER_NAME
* SERVER_PORT
* SERVER_PROTOCOL
* SERVER_SOFTWARE

This subprocedure can also be used to retrieve environment variables set with [RXS_PutEnvVar()](https://isupport.katointegrations.com/rxs/3.4/rxs_putenvvar.md).

## Subprocedure Prototype

### IBM i 7.1+

| Field | Description |
|---|---|
| `     D RXS_GetEnvVar...      D                 PR                  Extproc('RXS_GetEnvVar') Opdesc      D                                     Like(RXS_Var16Mv_t)      D                                     Rtnparm` | Returns the data retrieved from the environment variable. |
| `     D  pEnvVar                      30A   Value` | Specify the name of the environment variable to retrieve the value of. |


## Example Code

### IBM i 7.1+

#### Example 1: Retrieving an Environment Variable
```rpgle
      *--------------------------------------------------------------
      * This example code retrieves an environment variable. 
      * The environment variable being retrieved, REQUEST_METHOD, would 
      * be set by the Apache server, which means that it can only be 
      * retrieved if this program is used as a web service.
      *--------------------------------------------------------------
     H DFTACTGRP(*NO) BNDDIR('RXSBND') ACTGRP(*CALLER)

      /copy QRPGLECPY,RXSCB

     D Data            S                   Like(RXS_Var1Kv_t)

      /free
       Data = RXS_GetEnvVar( 'REQUEST_METHOD' ); 
       RXS_JobLog( 'REQUEST METHOD? %s' : Data );
       *INLR = *ON;
      /end-free
```