#PubNub 3.4.1 client for Go 1.0.3, 1.1
###Features
- Supports multiplexing, UUID, SSL, Encryption, Proxy, and godoc
- This version is not backward compatible. The major change is in the func calls. A new parameter "error callback" is added to the major functions of the pubnub class.
- The client now supports:
- Error Callback: All the error messages are routed to this callback channel
- Resume on reconnect
- You can now "Subscribe with timetoken"
- An example of Disconnect/Retry has been added in the example
- Multiple messages received in a single response from the server will now be split into individual messages
- Non 200 response will now be bubbled to the client
###Quick Start Video We've put together a quick HOWTO video here https://vimeo.com/66431136
###Build Instructions Summary
- Built using Eclipse IDE (juno)
- Install golang plugin for Eclipse
- Use the command
go get github.com/pubnub/go/pubnubMessagingto download and install the PubNub messaging package under the $GOPATH. - Go to eclipse and create a new
go project. Enter the project name. - Select the "Create new project in workspace".
- Click Finish.
- This will create a new project with the directories "bin", "src" and "pkg"
- To run the demo example copy the
pubnubExample.gofile from the location$GOPATH/src/github.com/pubnub/go/pubnubExampleto the "src" directory of the new project. - Under the eclipse project explorer expand the project name that you have created.
- Expand the src directory.
- Run
pubnubExample.goas a "go application". - Look for the application in the "Console" of the Eclipse IDE.
###Running Unit tests (instructions for Mac/Linux, for other dev environments the instructions are similar)
- Open Terminal
- Change the directory to
$GOPATH/src/github.com/pubnub/go/pubnubTests - And then run the command
go testto run test cases
###Demo Console App We've included a demo console app which documents all the functionality of the client, for example:
- Subscribe
- Subscribe with timetoken
- Publish
- Presence
- Detailed History
- Here_Now
- Unsubscribe
- Presence-Unsubscribe
- Time
- Disconnect/Retry
- Exit
###Quick Implementation Examples
- Init
pubInstance := pubnubMessaging.PubnubInit(<YOUR PUBLISH KEY>, <YOUR SUBSCRIBE KEY>, <SECRET KEY>, <CIPHER>, <SSL ON/OFF>, <UUID>)
- Publish
//Init pubnub instance
var errorChannel = make(chan []byte)
var callbackChannel = make(chan []byte)
go pubInstance.Publish(<pubnub channel>, <message to publish>, callbackChannel, errorChannel)
go ParseResponse(callbackChannel)
go ParseErrorResponse(errorChannel)
// please goto the end of this file see the implementations of ParseResponse and ParseErrorResponse
- Subsribe
//Init pubnub instance
var errorChannel = make(chan []byte)
var subscribeChannel = make(chan []byte)
go pubInstance.Subscribe(<pubnub channels, multiple channels can be separated by comma>, <timetoken, should be an empty string in this case>, subscribeChannel, <this field is FALSE for subscribe requests>, errorChannel)
go ParseResponse(subscribeChannel)
go ParseErrorResponse(errorChannel)
// please goto the end of this file see the implementations of ParseResponse and ParseErrorResponse
- Subscribe with timetoken
//Init pubnub instance
var errorChannel = make(chan []byte)
var subscribeChannel = make(chan []byte)
go pubInstance.Subscribe(<pubnub channel, multiple channels can be separated by comma>, <timetoken to init the request with>, subscribeChannel, <this field is FALSE for subscribe requests>, errorChannel)
go ParseResponse(subscribeChannel)
go ParseErrorResponse(errorChannel)
// please goto the end of this file see the implementations of ParseResponse and ParseErrorResponse
- Presence
//Init pubnub instance
var errorChannel = make(chan []byte)
var presenceChannel = make(chan []byte)
go pubInstance.Subscribe(<pubnub channel, multiple channels can be separated by comma>, <timetoken, should be an empty string in this case>, presenceChannel, <this field is TRUE for subscribe requests>, errorChannel)
go ParseResponse(subscribeChannel)
go ParseErrorResponse(errorChannel)
// please goto the end of this file see the implementations of ParseResponse and ParseErrorResponse
- Detailed History
//Init pubnub instance
var errorChannel = make(chan []byte)
var channelCallback = make(chan []byte)
go pubInstance.History(<pubnub channel>, <no of items to fetch>, <start time>, <end time>, false, channelCallback, errorChannel)
//example: go _pub.History(<pubnub channel>, 100, 0, 0, false, channelCallback, errorChannel)
go ParseResponse(channel)
go ParseErrorResponse(errorChannel)
// please goto the end of this file see the implementations of ParseResponse and ParseErrorResponse
- Here_Now
//Init pubnub instance
var errorChannel = make(chan []byte)
var channelCallback = make(chan []byte)
go pubInstance.HereNow(<pubnub channel>, channelCallback, errorChannel)
go ParseResponse(channelCallback)
go ParseErrorResponse(errorChannel)
// please goto the end of this file see the implementations of ParseResponse and ParseErrorResponse
- Unsubscribe
//Init pubnub instance
var errorChannel = make(chan []byte)
var channelCallback = make(chan []byte)
go pubInstance.Unsubscribe(<pubnub channels, multiple channels can be separated by comma>, channelCallback, errorChannel)
go ParseUnsubResponse(channelCallback)
go ParseErrorResponse(errorChannel)
// please goto the end of this file see the implementations of ParseResponse and ParseErrorResponse
- Presence-Unsubscribe
//Init pubnub instance
var errorChannel = make(chan []byte)
var channelCallback = make(chan []byte)
go pubInstance.PresenceUnsubscribe(<pubnub channels, multiple channels can be separated by comma>, channelCallback, errorChannel)
go ParseUnsubResponse(channelCallback)
go ParseErrorResponse(errorChannel)
// please goto the end of this file see the implementations of ParseResponse and ParseErrorResponse
- Time
//Init pubnub instance
var errorChannel = make(chan []byte)
var channelCallback = make(chan []byte)
go pubInstance.GetTime(channelCallback, errorChannel)
go ParseResponse(channelCallback)
go ParseErrorResponse(errorChannel)
// please goto the end of this file see the implementations of ParseResponse and ParseErrorResponse
- Disconnect/Retry
//Init pubnub instance
pubInstance.CloseExistingConnection()
- Exit
//Init pubnub instance
pubInstance.Abort()
- ParseResponse
func ParseResponse(channel chan []byte){
for {
value, ok := <-channel
if !ok {
break
}
if string(value) != "[]"{
fmt.Println(fmt.Sprintf("Response: %s ", value))
fmt.Println("");
}
}
}
- ParseErrorResponse
func ParseErrorResponse(channel chan []byte){
for {
value, ok := <-channel
if !ok {
fmt.Println("")
break
}
if string(value) != "[]"{
if(_displayError){
fmt.Println(fmt.Sprintf("Error Callback: %s", value))
fmt.Println("")
}
}
}
}