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@ -0,0 +1,42 @@ |
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package main |
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import ( |
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"bytes" |
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"io" |
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"log" |
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"math/rand" |
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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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fs := http.FileServer(http.Dir("./static")) |
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nextId := func(w http.ResponseWriter, _ *http.Request) { |
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next := base56Id3() |
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//log.Printf("Generating ID: %s", next)
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io.WriteString(w, next+"\n") |
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} |
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http.Handle("/", fs) |
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http.HandleFunc("/next", nextId) |
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log.Println("Listening on :8080...") |
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err := http.ListenAndServe(":8080", nil) |
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if err != nil { |
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log.Fatal(err) |
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} |
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} |
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func base56Id3() string { |
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//Base56 alphabet with "ambiguous" characters removed: [0oOIl1]
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alphabet := "23456789abcdefghijkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ" |
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//Initialize rand with the time - this is a problem with multiple requests in the same ns
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r := rand.New(rand.NewSource(time.Now().UnixNano())) |
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var b bytes.Buffer |
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for i := 0; i < 3; i++ { |
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n := r.Intn(len(alphabet)) |
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char := alphabet[n] |
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b.WriteByte(char) |
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} |
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return b.String() |
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} |
