Skype Development Techniques and ToolsAn Overview

eBay Developers Program 2007

Peter KalmströmPM Skype Toolbars

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Overview Components

JavaScriptover COM

Webpresence

Techniques

• Manipulating the Skype client– Cross-platform API– COM-wrapper– Java wrapper– URIs– Phone number manipulation—PNR

• Web– Web presence—SkypeWeb 1.1– Skype COM via javascript– The URIs

• Building a Skype Extra

Communicating via the Skype Client

Manipulating the Skype client II

• Control dialogs• Focus• Silent mode

• Add items to the Do-more menu

Expression

• Help users express themselves by controlling:

– Mood messages– Avatars – Online status

Cross-Platform API

• Works by operating system messaging– Register for messages– Listen for messages– Send messages

• Text-based

Make the First Call—API Example

-> CALL test <- CALL 1540 STATUS ROUTING <- CALL 1540 SUBJECT <- CALL 1540 STATUS ROUTING <- CALL 1540 STATUS RINGING <- CALL 1540 STATUS INPROGRESS

Set First Call on Hold ...

-> SET CALL 1540 STATUS ONHOLD <- CALL 1540 STATUS INPROGRESS <- CALL 1540 STATUS ONHOLD

-> CALL echo123 <- CALL 1545 STATUS ROUTING <- CALL 1545 SUBJECT <- CALL 1545 STATUS ROUTING <- CALL 1545 STATUS RINGING <- CALL 1545 STATUS INPROGRESS

• .. and make another call!

Join Second Call (1545) into Conference with First Call (1540)

-> SET CALL 1545 JOIN_CONFERENCE 1540 <- CALL 1545 CONF_ID 17930 <- CALL 1545 CONF_ID 17930 <- CALL 1540 CONF_ID 17930

First Call Is Automatically Resumed and Joined to Conference

<- CALL 1540 STATUS INPROGRESS <- CALL 1540 DURATION 53 <- CALL 1540 STATUS FINISHED <- CALL 1545 DURATION 23 <- CALL 1545 STATUS FINISHED

COM-Wrapper

• Reduces the complexity of Skype-based development– Object-oriented

programming – Collections

(users, chats, calls, and much more)

– Objects– Properties– Events

C# COM Example

SKYPE4COMLib.Skype objSkype;SKYPE4COMLib.Call objCallOne, objCallTwo;

objSkype = new SKYPE4COMLib.Skype(); objSkype.Attach(7,true);

objCallOne = objSkype.PlaceCall("test","","","");while (objCallOne.Status != SKYPE4COMLib.TCallStatus.clsInProgress){ }objCallOne.Hold();

objCallTwo = objSkype.PlaceCall("echo123", "", "", "");while (objCallTwo.Status != SKYPE4COMLib.TCallStatus.clsInProgress){}

objCallTwo.Join(objCallOne.Id);

Coding with the COM API—A Few Practical Tips

• Timeout property• Client object• Application object• Skype object

Java Wrapper

• Java power• Entire wrapper

is open source• Write once, run on

Windows/Mac/Linux

Java Example

• package com.skype.sample;

• import com.skype.ChatMessage;• import com.skype.ChatMessageAdapter;• import com.skype.Skype;• import com.skype.SkypeException;

• public class AutoAnswering {• public static void main(String[]args)throws Exception {• Skype.setDeamon(false); // to prevent exiting from this program• Skype.addChatMessageListener(new ChatMessageAdapter() {• public void chatMessageReceived(ChatMessage received)throws SkypeException {• if (received.getType().equals(ChatMessage.Type.SAID)) {• received.getSender().send("I'm working. Please, wait a moment.");• }• }• });• }• }

URIs

• Since Skype 1.4 skype: links have been supported

• Can be used on any Web page or in any application that supports hyperlinks

• No authorization required• Skype MS Office toolbar + Skype Web

plug-ins only use URIs

Skype URI Examples

skype: skype:[targets] skype:[targets]?call skype:[skypenames]?chat skype:[skypename]?voicemail skype:[skypename]?add skype:[skypenames]?sendfile skype:[skypename]?userinfo skype:[PSTN]?sms

Phone Number Manipulation—PNR

• Advanced text parsing algorithm• Phone numbers

– Find– Validate– Analyze

• ActiveX• Country selectors,

flags and dropdowns

Web

• See online status for any Skype user

• Presence information drives communication

Web Presence—SkypeWeb 1.1

• mystatus.skype.com/SkypeUserName• Localized in ten languages• Five image formats• skypeName.mystatus.skype.com DNS query option

Skype COM via Javascript

• Windows-based ActiveX-component• Internet Explorer only• Skype client needs to be installed

<html> <body> <object id=Skype name=Skype height=0 width=0

classid=clsid:830690FC-BF2F-47A6-AC2D-330BCB402664codebase="http://www.yoursite.com/Skype4COM.dll" >

<span style="color: red">Failed to load control.</span> </object> </body> </html>

Building a Skype Extra

• Skype Extras SDK• Software distribution and DRM-system• Distribute many types of applications

– Exe– DLL– DHTML– Java

• SDK embeds your application into Skype-distribution package

Skype Extra SDK & Publishing Studio

Other Tools

• SkypeTracer• Skype icons• Skype strings• SkypeCasts javascript

Q&AContact information:

Peter KalmströmSkype:peter.kalmstrom.nu

developer.skype.comSharing is goodLocalization is vitalCertification paths

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