rename 'channel' to 'stream' in requests and responses

Author: hpihkala

README.md

@@ -1,8 +1,8 @@
 <!-- Note that this readme is embedded on API Documentation page within Streamr. Please don't use first-level headings (h1). You should write this document so that it will work both as a stand-alone document in the public GitHub repo and as a section in the API docs. -->
 <a name="js-client"></a>
-## Streamr JavaScript Client
+## Streamr Javascript Client
 
-By using this client, you can easily subscribe to realtime [Streamr](http://www.streamr.com) streams from JavaScript-based environments, such as browsers and [node.js](https://nodejs.org). This enables you to use Streamr as an over-the-internet pub/sub engine with powerful analytics and automation features.
+By using this client, you can easily subscribe to realtime [Streamr](http://www.streamr.com) streams from Javascript-based environments, such as browsers and [node.js](https://nodejs.org). This enables you to use Streamr as an over-the-internet pub/sub engine with powerful analytics and automation features.
 
 The client uses [socket.io](http://socket.io/) under the hood for streaming message delivery. It works in virtually all browsers by using websockets where available, or fallback methods on legacy browsers.
 
@@ -12,24 +12,14 @@ The client is available on [npm](https://www.npmjs.com/package/streamr-client) a
 
 `npm install streamr-client`
 
-### Dependencies
-
-* [socket.io-client](https://cdn.socket.io/socket.io-1.3.7.js)
-* [debug](https://github.com/visionmedia/debug) (optional)
-
-In node.js, dependencies will be installed automatically with `npm install`. In the browser, make sure you include `socket.io-client` before `streamr-client` in your HTML.
-
 ### Usage
 
 Here's a quick example. More detailed examples for the browser and node.js can be found [here](https://github.com/streamr-dev/streamr-client/tree/master/examples).
 
 ```javascript
 // Create a StreamrClient instance
 var client = new StreamrClient({
-    // Connection options can be omitted, these are the default values
-    server: 'https://data.streamr.com',
-    autoConnect: true,
-    autoDisconnect: true
+    // See below for connection options
 })
 
 // Subscribe to a stream
@@ -60,19 +50,17 @@ counter  | (optional) A sequence number for this message, if available.
 
 Option | Default value | Description
 ------ | ------------- | -----------
-server | api.streamr.com | Address of the server to connect to.
+url | ws://www.streamr.com/api/v1/ws | Address of the Streamr websocket endpoint to connect to.
 autoConnect | true | If set to `true`, the client connects automatically on the first call to `subscribe()`. Otherwise an explicit call to `connect()` is required.
-autoDisconnect | true  | If set to `true`, the client automatically disconnects when the last channel is unsubscribed. Otherwise the connection is left open and can be disconnected explicitly by calling `disconnect()`.
-transports | null | Override default transport selection / upgrade scheme. For example, value `["websocket"]` will force use of sockets right from the beginning, while value `["polling"]` will allow only long-polling to be used.
-
+autoDisconnect | true  | If set to `true`, the client automatically disconnects when the last stream is unsubscribed. Otherwise the connection is left open and can be disconnected explicitly by calling `disconnect()`.
 
 ### Resend options
 
 Note that only one of the resend options can be used for a particular subscription. The default functionality is to resend nothing, only subscribe to messages from the subscription moment onwards.
 
 Option | Default value | Description
 ------ | ------------- | -----------
-resend_all | undefined | Set to `true` if you want all the messages for the channel resent from the earliest available message.
+resend_all | undefined | Set to `true` if you want all the messages for the stream resent from the earliest available message.
 resend_last | undefined | Resend the previous `N` messages.
 resend_from | undefined | Resend from a specific message number.
 resend_from_time | undefined | Resend from a specific Date (or millisecond timestamp).
@@ -135,7 +123,7 @@ no_resend |  | Fired after `resending` in case there was nothing to resend.
 
 ### Logging
 
-The Streamr JavaScript client library supports [debug](https://github.com/visionmedia/debug) for logging.
+The Streamr JS client library supports [debug](https://github.com/visionmedia/debug) for logging.
 
 In node.js, start your app like this: `DEBUG=StreamrClient node your-app.js`
 

streamr-client.js

@@ -390,7 +390,7 @@
 
 		createSubscribeRequest: function(stream, resendOptions) {
 			var req = {
-				channel: stream
+				stream: stream
 			}
 			Object.keys(resendOptions).forEach(function(key) {
 				req[key] = resendOptions[key]
@@ -405,7 +405,7 @@
 	function Connection(options) {
 		EventEmitter.call(this);
 		if (!options.url) {
-			throw "Server is not defined!"
+			throw "URL is not defined!"
 		}
 		this.options = options
 		this.connected = false
@@ -840,10 +840,10 @@
 
 		this.connection.on('subscribed', function(response) {
 			if (response.error) {
-				_this.handleError("Error subscribing to "+response.channel+": "+response.error)
+				_this.handleError("Error subscribing to "+response.stream+": "+response.error)
 			}
 			else {
-				var subs = _this.subsByStream[response.channel]
+				var subs = _this.subsByStream[response.stream]
 				delete subs._subscribing
 
 				debug('Client subscribed: %o', response)
@@ -860,9 +860,9 @@
 		this.connection.on('unsubscribed', function(response) {
 			debug("Client unsubscribed: %o", response)
 
-			if (_this.subsByStream[response.channel]) {
+			if (_this.subsByStream[response.stream]) {
 				// Copy the list to avoid concurrent modifications
-				var l = _this.subsByStream[response.channel].slice()
+				var l = _this.subsByStream[response.stream].slice()
 				l.forEach(function(sub) {
 					_this._removeSubscription(sub)
 					sub.emit('unsubscribed')
@@ -952,9 +952,9 @@
 	}
 
 	StreamrClient.prototype._checkAutoDisconnect = function() {
-		// Disconnect if no longer subscribed to any channels
+		// Disconnect if no longer subscribed to any streams
 		if (this.options.autoDisconnect && Object.keys(this.subsByStream).length === 0) {
-			debug("Disconnecting due to no longer being subscribed to any channels")
+			debug("Disconnecting due to no longer being subscribed to any streams")
 			this.disconnect()
 		}
 	}
@@ -985,7 +985,7 @@
 
 		// If this is the first subscription for this stream, send a subscription request to the server
 		if (!subs._subscribing && subscribedSubs.length === 0) {
-			var req = extend({}, sub.options, {type: 'subscribe', channel: sub.streamId})
+			var req = extend({}, sub.options, {type: 'subscribe', stream: sub.streamId})
 			debug("_requestSubscribe: subscribing client: %o", req)
 			subs._subscribing = true
 			_this.connection.send(req)
@@ -1004,7 +1004,7 @@
 		debug("Client unsubscribing stream %o", streamId)
 		this.connection.send({
 			type: 'unsubscribe',
-			channel: streamId
+			stream: streamId
 		})
 	}
 
@@ -1021,7 +1021,7 @@
 
 		sub.resending = true
 
-		var request = extend({}, options, resendOptions, {type: 'resend', channel: sub.streamId, sub: sub.id})
+		var request = extend({}, options, resendOptions, {type: 'resend', stream: sub.streamId, sub: sub.id})
 		debug("_requestResend: %o", request)
 		this.connection.send(request)
 	}