VB.NET
SQS Receive Message

Retrieves one or more messages from an Amazon SQS queue, with a maximum limit of 10 messages, from the specified queue.
See SQS ReceiveMessage or detailed information.
Chilkat VB.NET Downloads

VB.NET
Dim success As Boolean = False

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

Dim rest As New Chilkat.Rest

' Connect to the Amazon AWS REST server.
' such as https://sqs.us-west-2.amazonaws.com/
Dim bTls As Boolean = True
Dim port As Integer = 443
Dim bAutoReconnect As Boolean = True
success = rest.Connect("sqs.us-west-2.amazonaws.com",port,bTls,bAutoReconnect)

' Provide AWS credentials for the REST call.
Dim authAws As New Chilkat.AuthAws
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "AWS_SECRET_KEY"
' the region should match our URL above..
authAws.Region = "us-west-2"
authAws.ServiceName = "sqs"

rest.SetAuthAws(authAws)

rest.AddQueryParam("Action","ReceiveMessage")
rest.AddQueryParam("MaxNumberOfMessages","5")
rest.AddQueryParam("VisibilityTimeout","15")
rest.AddQueryParam("AttributeName","All")
rest.AddQueryParam("MessageAttributeName","All")

' Use the actual path part of your SQS queue URL here:
Dim responseXml As String = rest.FullRequestNoBody("GET","/123456789123/chilkatTest")
If (rest.LastMethodSuccess <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


' A successful response will have a status code equal to 200.
If (rest.ResponseStatusCode <> 200) Then
    Debug.WriteLine("response status code = " & rest.ResponseStatusCode)
    Debug.WriteLine("response status text = " & rest.ResponseStatusText)
    Debug.WriteLine("response header: " & rest.ResponseHeader)
    Debug.WriteLine("response body: " & responseXml)
    Exit Sub
End If


' Examine the successful XML response.
Dim xml As New Chilkat.Xml
xml.LoadXml(responseXml)
Debug.WriteLine(xml.GetXml())
Debug.WriteLine("----")

' A successful response looks like this:
' <?xml version="1.0" encoding="utf-8" ?>
' <ReceiveMessageResponse xmlns="http://queue.amazonaws.com/doc/2012-11-05/">
'     <ReceiveMessageResult>
'         <Message>
'             <Body>this is a test</Body>
'             <MD5OfBody>54b0c58c7ce9f2a8b551351102ee0938</MD5OfBody>
'             <ReceiptHandle>AQEBMyLof...UbKBTvHtEg==</ReceiptHandle>
'             <Attribute>
'                 <Name>SenderId</Name>
'                 <Value>957491831129</Value>
'             </Attribute>
'             <Attribute>
'                 <Name>ApproximateFirstReceiveTimestamp</Name>
'                 <Value>1475013283557</Value>
'             </Attribute>
'             <Attribute>
'                 <Name>ApproximateReceiveCount</Name>
'                 <Value>4</Value>
'             </Attribute>
'             <Attribute>
'                 <Name>SentTimestamp</Name>
'                 <Value>1475013283557</Value>
'             </Attribute>
'             <MessageId>52882c65-5e21-4450-9024-93a3b01e61d3</MessageId>
'             <MD5OfMessageAttributes>2ff68603f4239272bd03f543254ed040</MD5OfMessageAttributes>
'         </Message>
'     </ReceiveMessageResult>
'     <ResponseMetadata>
'         <RequestId>05ba5c92-80ee-5f87-be76-0cf67b7475d6</RequestId>
'     </ResponseMetadata>
' </ReceiveMessageResponse>

' Get some values from the XML:
Debug.WriteLine("Body: " & xml.ChilkatPath("ReceiveMessageResult|Message|Body|*"))
Debug.WriteLine("MessageId: " & xml.ChilkatPath("ReceiveMessageResult|Message|MessageId|*"))

Dim unused As String = xml.ChilkatPath("ReceiveMessageResult|Message[0]|Attribute|$")

Dim rec As Chilkat.Xml = xml.FindNextRecord("Name","SenderId")
Debug.WriteLine("SenderId: " & rec.GetChildContent("Value"))


rec = xml.FindNextRecord("Name","ApproximateFirstReceiveTimestamp")
Debug.WriteLine("ApproximateFirstReceiveTimestamp: " & rec.GetChildContent("Value"))


rec = xml.FindNextRecord("Name","ApproximateReceiveCount")
Debug.WriteLine("ApproximateReceiveCount: " & rec.GetChildContent("Value"))


rec = xml.FindNextRecord("Name","SentTimestamp")
Debug.WriteLine("SentTimestamp: " & rec.GetChildContent("Value"))


xml.GetRoot2()