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# Installation and configuration guide
I assume that you have a basic understanding of XMPP and the the concept of a XMPP component / transport. If not, please get a book about Jabber or read the standards.
transWhat is a XMPP transport. By this means it extends the functionallity of an existing XMPP server. It acts as a gateway between the XMPP and WhatsApp networks. It receives WhatsApp messages and forwards them to your XMPP client (and vice-versa).
The implementation of transWhat is based on the [Spectrum 2](http://www.spectrum.im) framework and the [Yowsup 2](https://github.com/tgalal/yowsup) library to interface with WhatsApp.
The following chart summarizes the involved components and the protocols they use to communicate.
## Prosody
### Installation
I will not cover the installation of Prosody in this guide. Please look for some other tutorials on how to do that.
### Configuration
The only important thing for us is the configuration of a XMPP component (Spectrum 2 in our case).
See http://prosody.im/doc/components.
Append the following at the end of `/etc/prosody/prosody.cfg.lua`
Component "whatsapp.0l.de"
component_secret = "whatsappsucks"
component_ports = { 5221 }
component_interface = "127.0.0.1"
## Spectrum 2
#### Installation
Manual compile latest version from [Github](https://github.com/hanzz/libtransport).
You can use the following guide: http://spectrum.im/documentation/installation/from_source_code.html.
#### Configuration
Create a new file `/etc/spectrum2/transports/whatsapp.cfg` with the following content:
[service]
user = spectrum
group = spectrum
jid = whatsapp.0l.de
server = localhost
password = whatsappsucks
port = 5221
backend_host = localhost
backend = /location/to/transwhat/transwhat.py
users_per_backend = 10
more_resources = 1
admin_jid = your@jid.example
[identity]
name = transWhat
type = xmpp
category = gateway
[logging]
config = /etc/spectrum2/logging.cfg
backend_config = /etc/spectrum2/backend-logging.cfg
## transWhat
### Installation
Checkout the latest version of transWhat from GitHub:
$ git clone git@github.com:stv0g/transwhat.git
Install required dependencies:
$ pip install --pre e4u protobuf python-dateutil
- **e4u**: is a simple emoji4unicode python bindings
- [**yowsup**](https://github.com/tgalal/yowsup): is a python library that enables you build application which use WhatsApp service.
### Configuration
Then create a new file called `constants.py` in the newly checked out transWhat Git repository:
BASE_PATH = "/location/to/transwhat"
TOKEN_FILE = BASE_PATH + "/logs/tokens"
MOTD_FILE = BASE_PATH + "/conf/motd"
REQUESTS_FILE = BASE_PATH + "/logs/requests"