# HTTP Client Parameters

This page describes the HTTP Client options that you can use with the Lua function send_http_request.

NOTE: When configuring authentication, do not set more than one of the following combinations.

- `BasicUsername` and `BasicPassword`
- `DigestUsername` and `DigestPassword`
- `NTLMUsername` and `NTLMPassword`

TIP: You can encrypt user names and passwords before entering them into your configuration file. For information about how to encrypt parameter values, refer to the IDOL Getting Started Guide.

Parameter | Type | Default | Description
--- | --- | --- | ---
AcceptCompressedEncodings | Boolean | True | Specifies whether to accept compressed responses to HTTP requests (by setting the header `Accept-Encoding`).
BasicOnAuthenticate | Boolean | False | Specifies whether to delay authentication. Some types of authentication (for example Siteminder) require that authentication is delayed until credentials are requested. To delay authentication, set this parameter to `TRUE`.
BasicPassword | String |  | The password to use to access resources protected by basic authentication.
BasicUsername | String |  | The username to use to access resources protected by basic authentication.
DigestPassword | String |  | The password to use to access resources protected by HTTP Digest authentication.
DigestUsername | String |  | The username to use to access resources protected by HTTP Digest authentication.
EnableKerberos | Boolean | False | Specifies whether to use Kerberos authentication.
GSSName | String |  | The file name of the GSS library. This library is required to use Kerberos authentication.
GSSPath | String |  | The path to the folder that contains the GSS library. This library is required to use Kerberos authentication.
HTTPConnectTimeout | Time Duration | 60s | The maximum amount of time to wait for the server to respond when establishing a connection.
HTTPReadTimeout | Time Duration | 60s | The maximum amount of time to wait to receive data.
NTLMPassword | String |  | The password to use to access resources protected by NTLM authentication.
NTLMUsername | String |  | The username to use to access resources protected by NTLM authentication.
ProxyHost | String |  | The host name or IP address of the proxy server to use.
ProxyPassword | String |  | The password to use to authenticate with the proxy server.
ProxyPort | Integer |  | The port of the proxy server to use.
ProxyUsername | String |  | The user name to use to authenticate with the proxy server.
SSLConfig | String | The current section | The name of a section in the configuration file that contains the SSL settings to use.
UserAgent | String |  | The value to use for the user-agent in the header of requests.
UseSpnego | Boolean | False | Specifies whether to use the SPNEGO protocol to decide which type of authentication to use.
UseSystemProxy | Boolean | False | A Boolean value that specifies whether to obtain details about your HTTP proxy from the system. On Windows, HTTP Connector reads the proxy settings configured through Internet Explorer or the Windows Control Panel. On Linux, HTTP Connector reads the proxy settings from environment variables such as `HTTP_PROXY` and `HTTPS_PROXY`. You can set this parameter instead of setting `ProxyHost`, `ProxyPort`, `ProxyUsername`, and `ProxyPassword`.

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