geopublisher

Location based Go PubSub server

what is geopublisher?

Provides you a websocket server, that you may connect with your geo information (latitude, longitude, precision) and receive the messages from people connected to same channel.

How it works ?

• Open a websocket connection to ws://localhost:8080/socket?lat=47.12&lng=120.43&precision=5&channel_id=xyz
• This will connect you to a channel with the geohash token generated with provided latitude longitude information like <channel_id>|<geohash>
• You will start to listen to changes in this channel and subgeohashes(sublocations with higher precisions) and receive via websocket.
• You may send message to any location by basic http request with same location parameters POST {message:hello, user:tuna} http://localhost:8080/messages?lat=47.12&lng=120.43&precision=5&channel_id=xyz
• And the clients listening to those channels via websocket will receive your message

Geohash

You may check here to have a clue about geohashes

Requirements

• Redis
• Go

How to run from source code?

• mkdir /your/path
• export GOPATH=/your/path
• go get github.com/garyburd/redigo/redis
• go get github.com/gorilla/mux
• go get github.com/gorilla/websocket
• go get github.com/vargi/geopublisher
• cd /your/path/src/github.com/vargi/geopublisher/
• go run main.go

Reference

• Used TomiHiltunen's geohash implementation for generating geohashes