I have to set up an Azure service which must be accessible for other platforms (android, iOS). That's why I try to set it up using http or https protocol, rather than sb (Service Bus) protocol (ref: Service Bus Bindings, last paragraph).
Unfortunately the service throws an exception while initializing:
"HTTP could not register URL http://+:80/ServiceBusDefaultNamespace/. Your process does not have access rights to this namespace (see http://go.microsoft.com/fwlink/?LinkId=70353 for details)."
The service initialization code in WorkerRole is:
private void InitailizeService()
{
Trace.WriteLine("Initializing service");
try
{
var serviceAddress = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ServiceAddress");
var protocol = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.Protocol");
string keyName = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ServiceKeyName");
string sharedAccessKey = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ServiceSharedAccessKey");
Uri uri = new Uri(protocol + "://" + serviceAddress + "/ServiceBusDefaultNamespace");
ServiceBusEnvironment.SystemConnectivity.Mode = ConnectivityMode.Http;
_host = new ServiceHost(typeof(WorkerRoleService), uri);
TokenProvider tp = null;
if (!String.IsNullOrEmpty(keyName))
{
tp = TokenProvider.CreateSharedAccessSignatureTokenProvider(keyName, sharedAccessKey);
}
var sharedSecretServiceBusCredential = new TransportClientEndpointBehavior(tp);
ContractDescription contractDescription = ContractDescription.GetContract(typeof(IInstalSoftCloudService), typeof(WorkerRoleService));
ServiceEndpoint serviceEndPoint = new ServiceEndpoint(contractDescription);
serviceEndPoint.Address = new EndpointAddress(uri);
Binding binding;
switch (protocol)
{
case "sb":
binding = new NetTcpRelayBinding { TransferMode = TransferMode.Streamed, MaxReceivedMessageSize = 1048576000, MaxBufferSize = 10485760, MaxConnections = 200 };
break;
case "http":
case "https":
binding = new WebHttpRelayBinding { TransferMode = TransferMode.Streamed, MaxReceivedMessageSize = 1048576000, MaxBufferSize = 10485760 };
break;
default:
throw new NotSupportedException("Protocol not supported: " + protocol);
}
serviceEndPoint.Binding = binding;
serviceEndPoint.Behaviors.Add(sharedSecretServiceBusCredential);
_host.Description.Endpoints.Add(serviceEndPoint);
_host.Open();
Trace.WriteLine("Service initialization completed");
}
catch (Exception e)
{
Trace.WriteLine("Service initialization failed.\r\n" + e.Message);
throw;
}
}
The settings in ServiceConfiguration.Cloud.cscfg are:
<Setting name="Microsoft.ServiceBus.ServiceAddress" value="<my namespace here>.servicebus.windows.net" />
<Setting name="Microsoft.ServiceBus.ServiceKeyName" value="RootManageSharedAccessKey" />
<Setting name="Microsoft.ServiceBus.ServiceSharedAccessKey" value="<my key here>" />
<Setting name="Microsoft.ServiceBus.Protocol" value="http" />
The above code works fine when protocol in settings is changed to "sb".
After several hours of struggle I eventually made it working with https protocol. The crucial change was made in service host creation line:
_host = new ServiceHost(typeof(WorkerRoleService));
instead of:
_host = new ServiceHost(typeof(WorkerRoleService), uri);
I also changed the security token from SAS to ACS. It required though recreating my service bus with use of Azure CLI, because Azure portal doesn't allow for enabling ACS to a previously created service bus. For some more details see this post: How can I create a windows service ACS by powershell? (read all the comments because the correct command for subscription selection is Select-AzureSubscription).
My final code is:
private void InitailizeService()
{
try
{
var serviceAddress = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ServiceAddress");
var serviceNamespace = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ServiceNamespace");
var protocol = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.Protocol");
string issuerName = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ServiceIssuerName");
string issuerSecret = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ServiceIssuerSecret");
Uri uri = ServiceBusEnvironment.CreateServiceUri(protocol, serviceAddress, serviceNamespace);
ServiceBusEnvironment.SystemConnectivity.Mode = ConnectivityMode.Http;
_host = new ServiceHost(typeof(WorkerRoleService));
TokenProvider tp = null;
if (!String.IsNullOrEmpty(issuerName))
{
tp = TokenProvider.CreateSharedSecretTokenProvider(issuerName, issuerSecret);
}
var sharedSecretServiceBusCredential = new TransportClientEndpointBehavior(tp);
Binding binding;
switch (protocol)
{
case "sb":
binding = new NetTcpRelayBinding { TransferMode = TransferMode.Streamed, MaxReceivedMessageSize = 1048576000, MaxBufferSize = 10485760, MaxConnections = 200 };
break;
case "http":
binding = new BasicHttpBinding { TransferMode = TransferMode.Streamed, MaxReceivedMessageSize = 1048576000, MaxBufferSize = 10485760 };
break;
case "https":
var wsbinding = new WS2007HttpRelayBinding { MaxReceivedMessageSize = 1048576000 };
wsbinding.Security.Mode = EndToEndSecurityMode.Transport;
wsbinding.Security.RelayClientAuthenticationType = RelayClientAuthenticationType.None;
binding = wsbinding;
break;
default:
throw new NotSupportedException("Protocol not supported: " + protocol);
}
var serviceEndPoint = _host.AddServiceEndpoint(typeof(IInstalSoftCloudService), binding, uri);
serviceEndPoint.Behaviors.Add(sharedSecretServiceBusCredential);
// Lines below are for MEX and publishing of the service
EnableMetadataExchange(uri, sharedSecretServiceBusCredential, binding);
ServiceRegistrySettings serviceRegistrySettings = new ServiceRegistrySettings(DiscoveryType.Public) { DisplayName = "InstalSystemMobileEngine" };
foreach (ServiceEndpoint subscriberEndpoint in _host.Description.Endpoints)
{
subscriberEndpoint.Behaviors.Add(serviceRegistrySettings);
}
_host.Open();
Trace.WriteLine("Service initialization completed");
}
catch (Exception e)
{
Trace.WriteLine("Service initialization failed.\r\n" + e.Message);
throw;
}
}
private void EnableMetadataExchange(Uri aBaseUri, TransportClientEndpointBehavior aBehavior, Binding aBinding, bool aEnableHttpGet = true)
{
if (_host.State == CommunicationState.Opened)
throw new InvalidOperationException("Host already opened");
var metadataBehavior = _host.Description.Behaviors.Find<ServiceMetadataBehavior>();
if (metadataBehavior == null)
{
metadataBehavior = new ServiceMetadataBehavior();
_host.Description.Behaviors.Add(metadataBehavior);
Trace.WriteLine("_host.Description.Behaviors.Add(metadataBehavior)");
}
var mexEndpoint = _host.AddServiceEndpoint(typeof(IMetadataExchange), aBinding, new Uri(aBaseUri, "mex"));
mexEndpoint.Behaviors.Add(aBehavior);
}
Configuration for the above code:
<Setting name="Microsoft.ServiceBus.ServiceAddress" value="<service bus address - without .servicebus.windows.net>" />
<Setting name="Microsoft.ServiceBus.ServiceNamespace" value="ServiceBusDefaultNamespace/" />
<Setting name="Microsoft.ServiceBus.ServiceIssuerName" value="<issuer name>" />
<Setting name="Microsoft.ServiceBus.ServiceIssuerSecret" value="<issuer secret>" />
<Setting name="Microsoft.ServiceBus.Protocol" value="https" />
Now we'll have to try to connect to this service from an Android application - I hope it goes fine. The connection from a test WCF application works correctly and what's very important: allows for Azure scaling (several worker role instances attached to the Service Bus).
The above code doesn't work with http protocol. I left it here because it works on Azure Emulator (with switching the service bus to local Service Bus for Windows).
Hope the above helps someone ...