HTTP Server
This program is a simple HTTP server written in Go. It defines two HTTP handlers: /hello
and /headers
. When the server receives a request to either of these paths, it will respond accordingly.
Here's a breakdown of the code:
package main
import (
"fmt"
"net/http"
)
// hello is an HTTP handler function that responds with "hello\n".
func hello(w http.ResponseWriter, req *http.Request) {
fmt.Fprintf(w, "hello\n")
}
// headers is an HTTP handler function that responds with the request headers.
func headers(w http.ResponseWriter, req *http.Request) {
// Iterate over request headers and write them to the response.
for name, headers := range req.Header {
for _, h := range headers {
fmt.Fprintf(w, "%v: %v\n", name, h)
}
}
}
func main() {
// Register the /hello and /headers handlers with the default ServeMux.
http.HandleFunc("/hello", hello)
http.HandleFunc("/headers", headers)
// Start the HTTP server on port 8090.
http.ListenAndServe(":8090", nil)
}
Explanation:
hello
is an HTTP handler function that writes the string "hello\n" to the response writer (w
).headers
is an HTTP handler function that iterates over the request headers and writes them to the response writer.In the
main
function:The
/hello
and/headers
paths are registered with their corresponding handler functions usinghttp.HandleFunc
.The server is started using
http.ListenAndServe
on port8090
.
To test the server, you can make requests to http://localhost:8090/hello
and http://localhost:8090/headers
. The /hello
path will respond with "hello\n", and the /headers
path will respond with the headers of the incoming request.
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