From: "Milan Stanojević" <milanst@gmail.com>
To: Ollie Frolovs <ollie.frolovs.2012@my.bristol.ac.uk>
Cc: caml users <caml-list@inria.fr>
Subject: Re: [Caml-list] Extracting exception details (Async, Cohttp, Exn)
Date: Mon, 2 Dec 2013 10:14:41 -0500 [thread overview]
Message-ID: <CAKR7PS87vUYsXTFYiEJhLt_uF6XqJzY6-BrY7q0KNC=jWgCvNQ@mail.gmail.com> (raw)
In-Reply-To: <2405FBD1-B79A-4C23-8886-FB6A17D5F8EA@my.bristol.ac.uk>
> Indeed. By saying “description” I tried to communicate my intention, obviously unsuccessfully. In the given example, I would like to extract ("connection attempt timeout" 127.0.0.2:80) in some civil way, preferable as a string so that i can display the error message to the user. In RWO all examples that i have seen so far, just check for Error/None and print “Unexpected failure” to the user (DuckDuckGo example). I want to give more information but not the entire sexp with the backtrace, etc.
>
As I said, you can use Monitor.extract_exn.
try_with (fun () -> Cohttp_async.Client.get (Uri.of_string "http://127.0.0.2"))
>>= function
| Error exn ->
let orig_exn = Monitor.extract_exn exn in
Exn.to_string orig_exn
| Ok _ -> .....
prev parent reply other threads:[~2013-12-02 15:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-29 14:34 Ollie Frolovs
2013-12-02 3:45 ` Milan Stanojević
2013-12-02 8:55 ` Ollie Frolovs
2013-12-02 15:14 ` Milan Stanojević [this message]
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