VB.NET

Azure Service Bus - Send Message to Queue

See more Azure Service Bus Examples

Demonstrates sending a message to an Azure Service Bus Queue. VB.NET

Dim success As Boolean = False

' Note: Requires Chilkat v9.5.0.65 or greater.

' This requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' Make the initial connection.
' A single REST object, once connected, can be used for many Azure Service Bus REST API calls.
' The auto-reconnect indicates that if the already-established HTTPS connection is closed,
' then it will be automatically re-established as needed.
Dim rest As New Chilkat.Rest
Dim bAutoReconnect As Boolean = True
success = rest.Connect("<yournamespace>.servicebus.windows.net",443,True,bAutoReconnect)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


' ----------------------------------------------------------------------------------------------
' The code above this comment could be placed inside a function/subroutine within the application
' because the connection does not need to be made for every request.  Once the connection is made
' the app may send many requests..
' ----------------------------------------------------------------------------------------------

' Let's load a previously computed SAS token and use it.
' See Azure Shared Access Signature for an example to genenerate an Azure SAS token.
Dim sbToken As New Chilkat.StringBuilder
sbToken.LoadFile("qa_data/tokens/serviceBusSas.txt","utf-8")

' Tell the REST object to use the Azure Shared Access Signature for authorization.
sbToken.Prepend("SharedAccessSignature ")
rest.AddHeader("Authorization",sbToken.GetAsString())

' ----------------------------------------------------------------------------------------------

' Send to a queue named "gila";
Dim queueName As String = "gila"

' The HTTP request body contains the content of the message sent to the queue.
Dim sbRequestBody As New Chilkat.StringBuilder
sbRequestBody.Append("Hello, I'm a gila monster, and I may bite!")

' Build the path..
Dim sbPath As New Chilkat.StringBuilder
sbPath.Append("/")
sbPath.Append(queueName)
sbPath.Append("/messages")

' Add timeout and api-version query parameters.
rest.AddQueryParam("timeout","20")
rest.AddQueryParam("api-version","2013-08")

' Standard brokered message properties are placed in a BrokerProperties HTTP header. 
' The broker properties must be serialized in JSON format. To specify a TimeToLive value of 3600 seconds 
' and to add a message label "M1" to the message..
Dim json As New Chilkat.JsonObject
json.AppendInt("TimeToLive",3600)
json.AppendString("Label","M1")
rest.AddHeader("BrokerProperties",json.Emit())

' To add custom properties, such as "Priority" and "Color"
rest.AddHeader("Priority","High")
rest.AddHeader("Customer","12345")

Dim sbResponseBody As New Chilkat.StringBuilder
success = rest.FullRequestSb("POST",sbPath.GetAsString(),sbRequestBody,sbResponseBody)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Response Status Code = " & rest.ResponseStatusCode)

' Check for a success response.
If (rest.ResponseStatusCode <> 201) Then
    Debug.WriteLine(rest.LastRequestStartLine)
    Debug.WriteLine(rest.LastRequestHeader)
    Debug.WriteLine(sbResponseBody.GetAsString())
    Debug.WriteLine("Failed.")
    Exit Sub
End If


' If successful, the 201 response will have no response body.

Debug.WriteLine("Success.")