srcsnk's Introduction

srcsnk

A simple server that sends and receives arbitrary amounts of data at arbitrary speeds. Useful for testing proxies and clients.

Installation

go get -u github.com/bluekeyes/srcsnk

Run srcsnk to start the server. Once the server is running, you can download a file at any path:

$ curl localhost:8000/an/arbitrary/file.bin?size=10M -o file.bin

Or upload a file to any path:

$ curl -T file.bin localhost:8000/an/arbitrary/path/file.bin

All the received data is discarded by the server.

Each endpoint accepts several paramters described below.

size – (download only) controls the size of the downloaded file. It takes the suffixes B, K, M, and G for bytes, kilobytes, megabytes, or gigabytes, respectively; these have the same meaning as in the dd command.
rate – controls the download or upload rate, in bytes per second. It accepts the same suffixes as the size paramter.
delayPre – the amount of time to wait before processing the request, including reading the request body. It accepts any value allowed by time.ParseDuration.
delayRes – the amount of time to wait before sending the initial response headers. It accepts any value allowed by time.ParseDuration. For downloads, delayPre and delayRes are interchangeable.

The command accepts the following flags:

-address – sets the address (IP and port) the server listens on; defaults to 127.0.0.1:8000
-log-file – sets the file where log output is written; if not provided, logs are written to stdout

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