mirror of https://github.com/tidwall/tile38.git
49 lines
1.5 KiB
Markdown
49 lines
1.5 KiB
Markdown
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# GO_REUSEPORT
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[](https://travis-ci.org/kavu/go_reuseport)
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[](https://codecov.io/gh/kavu/go_reuseport)
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[](https://godoc.org/github.com/kavu/go_reuseport)
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**GO_REUSEPORT** is a little expirement to create a `net.Listener` that supports [SO_REUSEPORT](http://lwn.net/Articles/542629/) socket option.
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For now, Darwin and Linux (from 3.9) systems are supported. I'll be pleased if you'll test other systems and tell me the results.
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documentation on [godoc.org](http://godoc.org/github.com/kavu/go_reuseport "go_reuseport documentation").
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## Example ##
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```go
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package main
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import (
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"fmt"
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"html"
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"net/http"
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"os"
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"runtime"
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"github.com/kavu/go_reuseport"
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)
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func main() {
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listener, err := reuseport.Listen("tcp", "localhost:8881")
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if err != nil {
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panic(err)
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}
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defer listener.Close()
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server := &http.Server{}
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http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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fmt.Println(os.Getgid())
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fmt.Fprintf(w, "Hello, %q\n", html.EscapeString(r.URL.Path))
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})
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panic(server.Serve(listener))
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}
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```
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Now you can run several instances of this tiny server without `Address already in use` errors.
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## Thanks
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Inspired by [Artur Siekielski](https://github.com/aartur) [post](http://freeprogrammersblog.vhex.net/post/linux-39-introdued-new-way-of-writing-socket-servers/2) about `SO_REUSEPORT`.
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