gopl.io/ch7/http1/main.go

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// Copyright © 2016 Alan A. A. Donovan & Brian W. Kernighan.
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
// See page 191.
// Http1 is a rudimentary e-commerce server.
package main
import (
"fmt"
"log"
"net/http"
)
//!+main
func main() {
db := database{"shoes": 50, "socks": 5}
log.Fatal(http.ListenAndServe("localhost:8000", db))
}
type dollars float32
func (d dollars) String() string { return fmt.Sprintf("$%.2f", d) }
type database map[string]dollars
func (db database) ServeHTTP(w http.ResponseWriter, req *http.Request) {
for item, price := range db {
fmt.Fprintf(w, "%s: %s\n", item, price)
}
}
//!-main
/*
//!+handler
package http
type Handler interface {
ServeHTTP(w ResponseWriter, r *Request)
}
func ListenAndServe(address string, h Handler) error
//!-handler
*/