68 lines
1.3 KiB
Markdown
68 lines
1.3 KiB
Markdown
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# http package stuff
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## HTTP Status Code
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Do not use number directly.
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Don't do this
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```golang
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w.WriteHeader(404)
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```
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Do this
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```golang
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w.WriteHeader(http.StatusNotFound)
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```
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## Error message
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```golang
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http.Error(w, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
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```
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## Flusher
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A [Flusher](https://pkg.go.dev/net/http#Flusher) can be used to allow an HTTP handler to flush buffered data to the client.
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```golang
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package main
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import (
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"fmt"
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"io"
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"net/http"
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"time"
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)
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func main() {
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http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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ended := make(chan bool)
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f, flushable := w.(http.Flusher)
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if flushable {
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go func() {
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ticker := time.NewTicker(1 * time.Second)
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for {
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select {
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case <-ticker.C:
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fmt.Println("debug")
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io.WriteString(w, "#")
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f.Flush()
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case <-ended:
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return
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case <-r.Context().Done():
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return
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}
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}
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}()
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}
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time.Sleep(5 * time.Second)
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ended <- true
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w.Write([]byte("ok"))
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})
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http.ListenAndServe(":8080", nil)
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}
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```
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