How do I handle an error when using rust-websocket so that only that connection fails and not the entire program?

Question

I am trying to get a Rust WebSocket server up and running. I started with the example code for an async websocker server.

Every time I get an Io error, like when the connection is interrupted, the entire program ends without any error. I modified the code on line 26 of the example to:

.map_err(|InvalidConnection {error, ..}| {
    println!("Error:{:?}",error);
    return error;
})

This prints the error, but does not prevent the program from stopping only the single connection and not crashing itself.

The most common error I get is:

Io(Error { repr: Custom(Custom { kind: Other, error: Stream(Error { repr: Custom(Custom { kind: ConnectionAborted, error: StringError("unexpected EOF observed") }) }) }) })

How to handle the Io Error so my program does not die and drops all other connections... — Hahihula
– Hahihula, Commented Jul 7, 2017 at 15:17
@Hahihula Please edit your question to clearly ask it. A question without highlighted and clear interrogation is not good in Stackoverflow. — Boiethios
– Boiethios, Commented Jul 7, 2017 at 15:34

Hahihula · Accepted Answer · 2017-07-12 10:27:27Z

0

Ok, with some help from rust IRC channel i found the solution. I've just replaced the error with None and filtered it out.

.map(Some).or_else(|_| -> Result<_, ()> { Ok(None) }).filter_map(|x| x)

Maybe this info will help someone with similar problem.

answered Jul 12, 2017 at 10:27

Hahihula

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