Error with WCF webservice moved to Azure VM - azure

Question

I have an old WCF webservice that's been moved to Azure VM.
I can easily access in Azure:
https://wcf/service.svc,
but when I try to post to:
https://wcf/service.svc/json/DoAction
it comes back with an empty response, when I open this in the browser I get 404 error.
Outside of Azure it all works fine, any ideas what can I do to get it to work? I would like to keep it running in VM as there are other items that were moved and work fine.
Here is the part of the web.config file that relates to "/json/" part:
<system.serviceModel>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
<services>
<service name="Service123" behaviorConfiguration="ChallengeBehavior">
<endpoint address="" binding="wsHttpBinding" bindingConfiguration="ChallengeMessageEncoding" contract="IService123" behaviorConfiguration="SoapServiceBehavior" />
<endpoint address="/json" binding="webHttpBinding" bindingConfiguration="RestServiceMessageEncoding" contract="IService123" behaviorConfiguration="RestServiceBehavior" />
</service>
</services>
<behaviors>
<endpointBehaviors>
<behavior name="RestServiceBehavior">
<webHttp defaultOutgoingResponseFormat="Json" automaticFormatSelectionEnabled="true" />
</behavior>
<behavior name="SoapServiceBehavior">
</behavior>
</endpointBehaviors>
</behaviors>
<bindings>
<webHttpBinding>
<binding name="RestServiceMessageEncoding">
<security mode="None">
</security>
</binding>
</webHttpBinding>
<wsHttpBinding>
<binding name="ChallengeMessageEncoding">
<security mode="None">
<transport clientCredentialType="None" proxyCredentialType="None" />
<message clientCredentialType="None" establishSecurityContext="false" negotiateServiceCredential="false" />
</security>
</binding>
</wsHttpBinding>
</bindings>
</system.serviceModel>

Answer 1

There is no problem the code snippets seem to me. Which version IIS is installed in the Azure VM? Do you have enabled the feature supported for WCF in IIS.
I suspect that the WCF service published on the VM does not work properly. Try to publish a default WCF service application project and browse the self-introduction page.
In addition, for a specific port, you need to enable outbound/inbound permission on the firewall.
VM>>Settings>>Network
Feel free to contact me if there is anything I can help with.

Answer 2

#Abraham, thank you for your answer.
I finally got it working, not sure which part helped but changes I introduced included:
a) Installed additional WCF features (as above) as only 2 were installed
b) Added extra bits to web config (allowing to run URLs with dots in name /Foo.svc/Save )
<handlers>
<remove name="ExtensionlessUrlHandler-Integrated-4.0" />
<remove name="OPTIONSVerbHandler" />
<remove name="TRACEVerbHandler" />
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
<clear />
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="/*" verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
</handlers>
c) Another config to support dots:
<modules runAllManagedModulesForAllRequests="true" />
d) Extended endpoints to support HTTPS as the above started working for HTTP:
<service name="PrivateService" behaviorConfiguration="PrivateBehavior">
<endpoint address="" binding="wsHttpBinding" bindingConfiguration="PrivateBehavior" contract="IPrivateService" behaviorConfiguration="SoapBehavior" />
<endpoint address="" binding="wsHttpBinding" bindingConfiguration="PrivateBehaviorSecure" contract="IPrivateService" behaviorConfiguration="SoapBehavior" />
<endpoint address="/json" binding="webHttpBinding" bindingConfiguration="RestSecure" contract="IPrivateServices" behaviorConfiguration="RestBehavior" />
<endpoint address="/json" binding="webHttpBinding" bindingConfiguration="Rest" contract="IPrivateService" behaviorConfiguration="RestBehavior" />
</service>
...
<webHttpBinding>
<binding name="Rest">
<security mode="None">
</security>
</binding>
<binding name="RestSecure">
<security mode="Transport">
<transport clientCredentialType="None" proxyCredentialType="None" />
</security>
</binding>
</webHttpBinding>