MIO is a lightweight IO library for Rust with a focus on adding as little overhead as possible over the OS abstractions.
MIO is a lightweight IO library for Rust with a focus on adding as little overhead as possible over the OS abstractions.
Questions tagged [mio]
41 questions
2
votes
1 answer
What constraints should I be aware of when generating mio's Tokens?
The mio library for asynchronous I/O relies on the developer to provide instances of the Token type in order to correlate events that have happened back to the source, e.g. a particular TcpStream or Handler::Timeout.
As you can see from the…
zslayton
- 51,416
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2
votes
1 answer
How to move borrowed content to close connection
The following code should accept tcp connection, read from them, and close them on hangup.
extern crate mio;
use mio::{EventLoop,Token,ReadHint};
use mio::tcp::{TcpListener, TcpStream};
use std::io::Read;
const L_CLIENT: Token = Token(0);
const…
michas
- 25,361
- 15
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1
vote
2 answers
Is there a recommended rust multi-threaded tcp communication program model?
While learning some Rust, I saw a lot of tutorials that used two very simple models. One is on the server side, where all the accepted tcpstreams are moved to a new thread for use, and the other is on the client side, using blocking reads and then…
progquester
- 1,228
- 14
- 23
1
vote
1 answer
Converting a synchronous Rust IO driver to be `async`
I have a UIO driver that within a so-called wait_on_complete function, polls a file descriptor to wait on an interrupt. This is completely synchronous, so blocks (with a timeout). I'd like to migrate the code such that wait_on_complete is async (or…
Henry Gomersall
- 8,434
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1
vote
1 answer
Why is Mio's poll triggered twice for user-generated events?
The following code generates a "user event" to be returned by poll:
extern crate mio;
use mio::event::Evented;
use mio::{Events, Poll, PollOpt, Ready, Registration, Token};
use std::thread::{sleep, spawn, JoinHandle};
use std::time::{Duration,…
attdona
- 17,196
- 7
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1
vote
0 answers
Why would the first write to Mio's TcpStream after accepting give an "operation would block" error?
With this code:
poll.poll(&mut poll_events, Some(Duration::from_secs(0)));
for event in poll_events.iter() {
match event.token() {
LISTENER_TOKEN => {
let (mut stream, addr) = unwrap_or_continue!(
…
Yuri Geinish
- 16,744
- 6
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1
vote
0 answers
How to accept a client socket and then poll for the TcpStream in mio?
I cannot figure out how to accept a client socket then start polling for events on the returned TcpStream with mio 0.6.
I tried this code, but an event for Token(1) never arrives. Although the accept part is printed out, the client is instantly…
Midiparse
- 4,701
- 7
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1
vote
1 answer
Is it possible to register multiple timeouts in mio?
I have written a TCP server in mio and registered multiple timeouts, but only the last registered timeout fires. Do I need a wrapper for my timeouts to combine them or are there any other ways to register multiple timeouts in mio v0.5?
kper
- 313
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1
vote
1 answer
How to handle errors in mio?
I am building a multithreaded async HTTP server on top of mio.
How should I handle events on client TcpStream connections?
For is_readable it's pretty straightforward: I read the request and write the response.
For other kinds I am not sure.…
ElefEnt
- 2,027
- 1
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1
vote
1 answer
How to save reference to handler in hashmap field
I am learning Rust and trying to write a websocket server. The logic is following: WSConnectionFactory creates WSHandler which handle incoming messages and send them to other clients according to arbitrary rules.
The problem is that I don't know how…
Sergey
- 145
- 1
- 6
1
vote
1 answer
Native library `kernel32` is being linked to by more than one package
I cloned and tried to build the MIO coroutines library, but its dependencies seem to clash:
native library `kernel32` is being linked to by more than one package, and can only be linked to by one package
kernel32-sys v0.2.0
kernel32-sys…
LogicChains
- 4,332
- 2
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- 27
1
vote
1 answer
Trouble with buffer types in mio
I'd like to write an asynchronous server in Rust using mio and I have trouble with the buffer types. I've tried different buffer types and can't get it to work. My current code is:
extern crate mio;
extern crate bytes;
use std::io;
use…
elszben
- 495
- 1
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- 6
1
vote
1 answer
Working with UDP using mio and getting an error "MutBuf is not implemented for the type MutSliceBuf"
For learning purposes I am currently trying to write small program which will implement echo-server for UDP packets which will work on a certain set of ports (say 10000-60000). So as it wouldn't be so good to spam 50k threads for this I need to use…
user3234005
- 342
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1
vote
1 answer
receiving partial UDP packets from mio::udp::UdpSocket.recv
I'm using mio::udp::UdpSocket to receive a response to a request from a client. It looks like I'm getting partial UDP packets on the triggered event. I'm not sure if this is a bug in the mio library or not.
I've tried PollOpt::level(), all(),…
bluejekyll
- 155
- 2
- 8
0
votes
1 answer
Generic length of array when reading a stream buffer
I would like to set a generic value (n) in the array based on the bytes that are written in the stream. Now I do not know the exact length of the buffer, I just create a hard coded array to read the stream bytes.
use mio::net::TcpStream;
...
let…
DustInTheSilence
- 575
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