SendMessage to SQS with HTTPS JSON body

Question

I would like to send a HTTPS JSON POST request to AWS SQS, rather than url-encoded. I would like for the whole request, including the Action, the Attributes, the MessageBody, etc. to be within one JSON object.

I am currently trying to do so in Postman. When I do so with a url-encoded body that looks like:

Action=SendMessage&MessageBody=Somemessage
&Expires=2020-10-15T12%3A00%3A00Z
&Version=2012-11-05

I get:

<?xml version="1.0"?>
<SendMessageResponse xmlns="http://queue.amazonaws.com/doc/2012-11-05/">
    <SendMessageResult>
        <MessageId>someid</MessageId>
        <MD5OfMessageBody>somemd5</MD5OfMessageBody>
    </SendMessageResult>
    <ResponseMetadata>
        <RequestId>somerequestid</RequestId>
    </ResponseMetadata>
</SendMessageResponse>

When I do so with a JSON body that looks like:

{
"Action":"SendMessage",
"MessageBody":"Somejsonmessage",
"Expires":"2020-10-15T12:00:00",
"Version":"2012-11-05"
}

I get:

<AccessDeniedException>
  <Message>Unable to determine service/operation name to be authorized</Message>
</AccessDeniedException>

If I change this to:

Action=SendMessage&MessageBody={
"Action":"SendMessage",
"MessageBody":"Somejsonmessage",
"Expires":"2020-10-15T12:00:00",
"Version":"2012-11-05"
}

It works again, but I want to send the whole message as one JSON object.

I have been unable to find out whether or not using a JSON request body is actually legal. Their examples use url-encoded. Is sending a JSON request body legal for AWS SQS? Can you provide me an example?

Thanks.

Red Boy Red Boy · Accepted Answer · 2018-05-09T17:02:31

Sending JSON in encoded URL is not illegal. Its determined by Content-Type Header. Refer URL-Encoded vs JSON

SendMessage to SQS with HTTPS JSON body

1 Answers