Golang Example for adding custom headers to a request.

golang-request

client := &http.Client{]
req, err := http.NewRequest("POST", "http://example.com", bytes.NewReader(postData))
req.Header.Add("User-Agent", "myClient")
resp, err := client.Do(req)
defer resp.Body.Close()

http.Client right square bracket should be a right curly brace
https://gist.github.com/R4wm/405eb358e9383dc8457a55025d0a8d68