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# When one of them hangs up, the other one is also disconnected
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The first servlet is a SIP Servlet that handles softphone registration. When Alice or Bob launches their softphone, it registers the softphone address with a SIP proxy.
The first servlet is a SIP Servlet that handles softphone registration. When Alice or Bob launches their softphone, it registers the softphone address with a SIP proxy. We will record the softphone contact information using Java Persistence API. It will be used later to call Alice or Bob.
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Our registrar servlet will record the softphone contact information using Java Persistence, so that it can be used later to call Alice or Bob.
Below is pseudocode for clicktodial.sip.RegistrarServlet. The full code can be found in the [download bundle|ClickToDial.zip].
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Below is some pseudocode for clicktodial.sip.RegistrarServlet. The full code can be found in the [download bundle|ClickToDial.zip].
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The Call SIP servlet handles the OK response to the INVITE sent by the PlaceCall servlet above. Once an OK is received from Alice, this servlet sends an INVITE to Bob, specifying Alice's media preferences. When an OK is received from Bob, it sends an ACK to both parties.
The Call SIP servlet handles the OK response to the INVITE sent by the PlaceCall servlet above. Once an OK is received from Alice, this servlet sends an INVITE to Bob, specifying Alice's media preferences. When an OK is received from Bob, it sends an ACK to both parties. It also handle the BYE and call tear down.
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secondPartyAck.setContent(resp.getContent(), "application/sdp");
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The example is distributed as a NetBeans project. You can deploy it directly from [NetBeans 5.5.1|http://www.netbeans.org/community/releases/55/1/] to a [SailFin|http://sailfin.dev.java.net] container.
You will need to [download and install SailFin first.|https://sailfin.dev.java.net/downloads/downloads.html].
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Before you start, you will need to download and build SailFin using [these instructions|https://sailfin.dev.java.net/Build_Instructions_for_SailFin.html]. You will also need to use the Server Manager in NetBeans to add SailFin as a server.
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To install:
# Unzip the download bundle
The example is distributed as a NetBeans project. You can build and deploy it directly from [NetBeans 5.5.1|http://www.netbeans.org/community/releases/55/1/] to a [SailFin|http://sailfin.dev.java.net] container. You will also need to download install the [SIP development plugin for NetBeans | https://glassfishplugins.dev.java.net/sip/index.html].
After installing SailFin and NetBeans, you will register the SailFin server using Server Manager in NetBeans.
To open the sample in NetBeans:
# Unzip the [download bundle | ClickToDial.zip]
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# Alternatively, you can select "Build" from the NetBeans menu. This will generate "dist/ClickToDial.war", which can be deployed manually.
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Alternatively, you can skip NetBeans and use the <b>ant</b> scripts. There is a <b>build.xml</b> in the top level directory that will automatically build it and generate a deployable archive in <b>dist/ClickToDial.war</b>. You can deploy using <b>asadmin deploy dist/ClickToDIal.war</b>.
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You can test this example using any SIP-based software phone. Instructions are provided for two freely available softphones: [x-lite|http://www.counterpath.com/index.php?menu=Products&smenu=xlite] and [Ekiga|http://www.gnomemeeting.org].
You can test this example using any SIP-based software phone. Instructions are provided for freely available X-Lite softphones: [x-lite|http://www.counterpath.com/index.php?menu=Products&smenu=xlite]
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! 3. Setup the Ekiga Softphone
! 3. Setup Bob's Softphone
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Ekiga is a freely available softphone for Linux and Windows. To set up Bob's softphone in Ekiga, I used the settings below, where 129.148.173.187 is the IP address of my SailFin server.
X-Lite is a freely available softphone for many platforms. To set up Bob's softphone, I used the settings below, where 129.148.173.187 is the IP address of my SailFin server. It is running on port 5060.
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[{Image src='ekiga.png' width='' height='' align='center' }]
[{Image src='xten.png' width='' height='' align='center' }]
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With Ekiga setup, enabled the account to perform the registration. You should see a message like the following in the SailFin log:
With X-Lite setup, enable the account to perform the registration to SailFin server which is acting as a registrar. You should see a message like the following in the SailFin log:
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X-Lite also will show a message: <b>You are logged in as Bob</b>. Once X-Lite successfully registers, you can reload Bob's Login web page to get more information about his registration:
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Once Ekiga is launched, you can reload Bob's page to get more information about his registration:
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! 5. Setup the x-lite Softphone
! 5. Setup the x-lite Softphone. Same as above, but configured for Alice.
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X-Lite is a free, cross-platform softphone from Counterpath. I used the following setup to have my x-lite softphone log in as Alice:
[{Image src='xten.png' width='' height='' align='center' }]
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Now we are all set up to have Alice place a call to Bob. When Alice clicks on the "Call" link next to Bob's name, her softphone should ring. When she picks up, Bob's sofphone should ring. When he answers, the call is connected.
Now we are all set up to have Alice place a call to Bob (or Bob to Alice). When Alice clicks on the "Call" link next to Bob's name, her softphone should ring. When she picks up, Bob's sofphone should ring. When he answers, the call is connected. Either can disconnect first and the other is automatically disconnected by CallServlet.
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This page (revision-30) was last changed on 04-Sep-09 09:46 AM, -0700 by Binod PG