[Haskell-cafe] Tracing HTTP request/response using servant-client or http-client

[Jan von Löwenstein]

Hi,

I just found `checkResponse :: Request -> Response BodyReader -> IO ()`.

Unfortunately reading the body from it in order to log it will apparently
empty the responseBody for further processors.

Any ideas?

Regards
Jan
P.S. I will probably open an issue on http-client

Jan von Löwenstein <jan.loewenstein at gmail.com> schrieb am Di., 13. Dez.
2016 um 22:45 Uhr:

> Hi,
>
> I wonder if there is a possibility to make servant-client or the layer
> below, i.e. http-client log all requests and corresponding responses into a
> log file.
>
> There is `managerModifyRequest :: ManagerSettings
> <https://hackage.haskell.org/package/http-client-0.5.4/docs/Network-HTTP-Client.html#t:ManagerSettings>
>  -> Request
> <https://hackage.haskell.org/package/http-client-0.5.4/docs/Network-HTTP-Client.html#t:Request>
>  -> IO
> <https://hackage.haskell.org/package/base-4.9.0.0/docs/System-IO.html#t:IO>
>  Request
> <https://hackage.haskell.org/package/http-client-0.5.4/docs/Network-HTTP-Client.html#t:Request>
> ` (
> https://github.com/snoyberg/http-client/blob/master/http-client/Network/HTTP/Client/Types.hs#L672) which
> would allow to build logging for requests I suppose.
>
> However I could neither find a corresponding hook for Response, nor a
> "batteries included"TM `logRequests = True`, `requestLogger=...` or
> something along those lines.
>
> Best
> Jan
>
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