Making query API requests using Amazon JSON protocol - Amazon Simple Queue Service
Constructing an endpointMaking a POST request
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Making query API requests using Amazon JSON protocol

In this section you learn how to construct an Amazon SQS endpoint, make POST requests, and interpret responses.

Note

Amazon JSON protocol is supported for most language variants. For a full list of supported language variants, see What languages are supported for Amazon JSON protocol used in Amazon SQS APIs?.

Topics

Constructing an endpoint

To work with Amazon SQS queues, you must construct an endpoint. For information about Amazon SQS endpoints, see the following pages in the Amazon Web Services General Reference:

Every Amazon SQS endpoint is independent. For example, if two queues are named MyQueue and one has the endpoint sqs.us-east-2.amazonaws.com while the other has the endpoint sqs.eu-west-2.amazonaws.com, the two queues don't share any data with each other.

The following is an example of an endpoint that makes a request to create a queue. 

POST / HTTP/1.1
Host: sqs.us-west-2.amazonaws.com
X-Amz-Target: AmazonSQS.CreateQueue
X-Amz-Date: <Date>
Content-Type: application/x-amz-json-1.0
Authorization: <AuthParams>
Content-Length: <PayloadSizeBytes>
Connection: Keep-Alive 
{
    "QueueName":"MyQueue",
    "Attributes": {
        "VisibilityTimeout": "40"
    },
    "tags": {
        "QueueType": "Production"
    }
}
Note

Queue names and queue URLs are case sensitive.

The structure of AUTHPARAMS depends on the signature of the API request. For more information, see Signing Amazon API Requests in the Amazon Web Services General Reference.

Making a POST request

An Amazon SQS POST request sends query parameters as a form in the body of an HTTP request.

The following is an example of an HTTP header with X-Amz-Target set to AmazonSQS.<operationName>, and an HTTP header with Content-Type set to application/x-amz-json-1.0.

POST / HTTP/1.1
Host: sqs.<region>.<domain>
X-Amz-Target: AmazonSQS.SendMessage
X-Amz-Date: <Date>
Content-Type: application/x-amz-json-1.0
Authorization: <AuthParams>
Content-Length: <PayloadSizeBytes>
Connection: Keep-Alive 
{
    "QueueUrl": "https://sqs.<region>.<domain>/<awsAccountId>/<queueName>/",
    "MessageBody": "This is a test message",
}

This HTTP POST request sends a message to an Amazon SQS queue.

Note

Both HTTP headers X-Amz-Target and Content-Type are required.

Your HTTP client might add other items to the HTTP request, according to the client's HTTP version.