Go Web Development Cookbook

How to do it...

In this recipe, we are going to create a simple HTTP server that will render Hello World! when we browse http://localhost:8080 or execute curl http://localhost:8080 from the command line. Perform the following steps:

1. Create http-server.go and copy the following content:

package mainimport (  "fmt"  "log"  "net/http")const (  CONN_HOST = "localhost"  CONN_PORT = "8080")func helloWorld(w http.ResponseWriter, r *http.Request) {  fmt.Fprintf(w, "Hello World!")}func main() {  http.HandleFunc("/", helloWorld)  err := http.ListenAndServe(CONN_HOST+":"+CONN_PORT, nil)  if err != nil   {    log.Fatal("error starting http server : ", err)    return  }}

2. Run the program with the following command:

$ go run http-server.go