(Classic ASP) Azure Service Bus - Send Message to Topic

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Example code showing how to send a message to an Azure Service Bus Topic.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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' 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.
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Rest")
set rest = Server.CreateObject("Chilkat.Rest")
bAutoReconnect = 1
success = rest.Connect("<yournamespace>.servicebus.windows.net",443,1,bAutoReconnect)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
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.
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.StringBuilder")
set sbToken = Server.CreateObject("Chilkat.StringBuilder")
success = sbToken.LoadFile("qa_data/tokens/serviceBusSas.txt","utf-8")

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

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

' The code for sending to a topic is identical to the code sending to a queue.
' The only difference is that a topic name (or topic path) is used instead of queue name/path.

' Send to a topic named "gilaMonster";
topicName = "gilaMonster"

' The HTTP request body contains the content of the message sent to the topic.
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.StringBuilder")
set sbRequestBody = Server.CreateObject("Chilkat.StringBuilder")
success = sbRequestBody.Append("Hello, I'm a gila monster!")

' Build the path..
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.StringBuilder")
set sbPath = Server.CreateObject("Chilkat.StringBuilder")
success = sbPath.Append("/")
success = sbPath.Append(topicName)
success = sbPath.Append("/messages")

' Add timeout and api-version query parameters.
success = rest.AddQueryParam("timeout","20")
success = 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..
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.JsonObject")
set json = Server.CreateObject("Chilkat.JsonObject")
success = json.AppendInt("TimeToLive",3600)
success = json.AppendString("Label","A123")
success = rest.AddHeader("BrokerProperties",json.Emit())

' To add custom properties, such as "Priority" and "Color"
success = rest.AddHeader("Priority","High")
success = rest.AddHeader("Color","pink")

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.StringBuilder")
set sbResponseBody = Server.CreateObject("Chilkat.StringBuilder")
success = rest.FullRequestSb("POST",sbPath.GetAsString(),sbRequestBody,sbResponseBody)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Response Status Code = " & rest.ResponseStatusCode) & "</pre>"

' Check for a success response.
If (rest.ResponseStatusCode <> 201) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastRequestStartLine) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastRequestHeader) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( sbResponseBody.GetAsString()) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Failed.") & "</pre>"
    Response.End
End If

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

Response.Write "<pre>" & Server.HTMLEncode( "Success.") & "</pre>"

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