Simplest Ruby code for SQS request signing?

I am working in the cool but very constrained environment of Tropo (cloud telephony) Ruby scripting. The entire app is a single JRuby file. No gems, no requires.

I need t开发者_运维问答o send simple messages to a single SQS queue. I don't need to do any other SQS operations. Before I start pulling code out of existing gems to do this, I wanted to see if anyone has standalone code for sending SQS messages or code that does the HTTP request signing that SQS requires.

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We ended up going with the following super-simple code to post a message to an SQS queue that already exists. No gems required.

super_simple_sqs.rb