Should we handle redirection

[tatchi]

I was testing the cohttp client with the jaeger all in one image. I set http://localhost:4318/ as the config.url, which makes the client to send traces to http://localhost:4318//v1/traces (notice the double //. Also see #38).

I didn't notice any errors in the terminal, but no traces showed up. It turns out that this is because a 301 redirect to /v1/traces was returned, and we do not handle redirects in the code.

I think we should handle redirects or at least fail/log something out to the console. wdyt?

[c-cube]

I think the ocurl backend does handle redirections. But good point about the cohttp client.

And yes, logging to stderr is a good idea. 👍