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kamailio/modules/xhttp_rpc/README

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xHTTP_RPC Module
Ovidiu Sas
<osas@voipembedded.com>
Edited by
Ovidiu Sas
<osas@voipembedded.com>
Edited by
Alex Balashov
<abalashov@evaristesys.com>
Copyright © 2011 VoIPEmbedded Inc.
__________________________________________________________________
Table of Contents
1. Admin Guide
1. Overview
1.1. Limitations
2. Dependencies
2.1. Kamailio Modules
2.2. External Libraries or Applications
3. Parameters
3.1. xhttp_rpc_root (str)
3.2. xhttp_rpc_buf_size (str)
4. Functions
4.1. dispatch_xhttp_rpc()
5. Usage
List of Examples
1.1. Set xhttp_rpc_root parameter
1.2. Set xhttp_rpc_buf_size parameter
1.3. dispatch_xhttp_rpc usage
Chapter 1. Admin Guide
Table of Contents
1. Overview
1.1. Limitations
2. Dependencies
2.1. Kamailio Modules
2.2. External Libraries or Applications
3. Parameters
3.1. xhttp_rpc_root (str)
3.2. xhttp_rpc_buf_size (str)
4. Functions
4.1. dispatch_xhttp_rpc()
5. Usage
1. Overview
1.1. Limitations
This module provides an HTTP transport layer implementation for the RPC
management interface in a human-readable format.
The xHTTP_RPC module uses the xHTTP module to handle HTTP requests.
Read the documentation of the xHTTP module for more details.
1.1. Limitations
* This module does not implement asynchronous RPC commands. It is
unlikely that asynchronous RPC commands will be executed from an
RPC web interface.
* This module does not accept parameters embedded in a structure (see
RPC documentation for more info about how parameters can be passed
to RPC).
* At startup, all RPC commands are sorted and grouped based on their
format. The expected format is [group].[subcommand]. The initial
xhttp_rpc webpage displays all the retrieved groups. All RPC
commands are available as sub-menus of each [group]. If an RPC
command is not in the expected format, it will be dropped from the
initial xhttp_rpc home page menu.
2. Dependencies
2.1. Kamailio Modules
2.2. External Libraries or Applications
2.1. Kamailio Modules
The following modules must be loaded before this module:
* xhttp - xHTTP.
2.2. External Libraries or Applications
The following libraries or applications must be installed before
running Kamailio with this module loaded:
* None
3. Parameters
3.1. xhttp_rpc_root (str)
3.2. xhttp_rpc_buf_size (str)
3.1. xhttp_rpc_root (str)
Specifies the root path for RPC http requests. The link to the RPC web
interface must be constructed using the following pattern:
http://[server_IP]:[tcp_port]/[xhttp_rpc_root]
Default value is "rpc".
Example 1.1. Set xhttp_rpc_root parameter
...
modparam("xhttp_rpc", "xhttp_rpc_root", "http_rpc")
...
3.2. xhttp_rpc_buf_size (str)
Specifies the maximum length of the buffer (in bytes) used to write the
RPC reply information in order to build the HTML response.
Default value is 0 (auto set to 1/3 of the size of the configured pkg
mem).
Example 1.2. Set xhttp_rpc_buf_size parameter
...
modparam("xhttp", "xhttp_rpc_buf_size", 1024)
...
4. Functions
4.1. dispatch_xhttp_rpc()
4.1. dispatch_xhttp_rpc()
Handle the HTTP request and generate a response.
Example 1.3. dispatch_xhttp_rpc usage
...
tcp_accept_no_cl=yes
...
loadmodule "sl.so"
loadmodule "xhttp.so"
loadmodule "xhttp_rpc.so"
...
modparam("xhttp_rpc", "xhttp_rpc_root", "http_rpc")
...
event_route[xhttp:request] {
$var(xhttp_rpc_root) = $(hu{s.substr,0,9});
if ($var(xhttp_rpc_root) == "/http_rpc")
dispatch_xhttp_rpc();
else
xhttp_reply("200", "OK", "text/html",
"<html><body>Wrong URL $hu</body></html>");
}
...
5. Usage
The module is not intended to be used in a "scripted" mode with command
line tools. It only provides a simple web interface with all the
available RPC commands. Point a web browser to
http://serverip:port/http_rpc and browse through the available rpc
commands.
If you don't configure a dedicated port for HTTP, then you have to use
same port as for SIP TCP. If you load and configure TLS module, then
you can browse using HTTPS to the SIP TLS port.