Invalid HostName - Not able to connect IIS express from Android Emulator

Question

I am trying to connect a WCF service hosted at my local IIS express from an Android app. Currently, I am testing this on an Emulator.

Local URL for the service is http://locahost:40000/api/Authenticate

I knew that localhost is not going to work and I used 10.0.2.2 in the code

post = new HttpPost("http://10.0.2.2:40000/api/authenticate");

but the response on client execute is an "Invalid Hostname"

I tried editing the ApplicationHost.config of IIS express and added a binding entry for 10.0.2.2 but that didn't work too

Is there anything else that I am missing ?

Answer 1

As I understand it, 10.0.2.2 is an alias for 127.0.0.1, so add that to your applicationhost.config binding for your site, e.g.

 <site name="MySite" id="1">
    <application path="/" applicationPool="Clr4IntegratedAppPool">
      <virtualDirectory path="/" physicalPath="{yourpath}" />
    </application>
    <bindings>
      <binding protocol="http" bindingInformation="*:26013:localhost" />
      <binding protocol="http" bindingInformation="*:26013:127.0.0.1" />
    </bindings>
  </site>

Bear in mind that these days if you're using Visual Studio the relevant applicationhost.config for your site may not be in c:\users\... but rather in a .vs\config folder at the root of your solution.

Answer 2

I tried something else which worked , I added the IP address of my system within the IIS Express applicationhost.config file bindings sections.

<bindings>
<binding protocol="http" bindingInformation="*:40000:localhost" />
<binding protocol="http" bindingInformation="*:40000:192.168.5.118" />
</bindings>

I am able to call the service now