Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
golang upload client and server
// curl -X POST -H "Content-Type: application/octet-stream" --data-binary '@filename' http://127.0.0.1:5050/upload
package main
import (
"fmt"
"io"
"net/http"
"os"
"time"
"io/ioutil"
)
func uploadHandler(w http.ResponseWriter, r *http.Request) {
file, err := os.Create("./result")
if err != nil {
panic(err)
}
n, err := io.Copy(file, r.Body)
if err != nil {
panic(err)
}
w.Write([]byte(fmt.Sprintf("%d bytes are recieved.\n", n)))
}
func main() {
http.HandleFunc("/upload", uploadHandler)
go func() {
time.Sleep(time.Second * 1)
upload()
}()
http.ListenAndServe(":5050", nil)
}
func upload() {
file, err := os.Open("./filename")
if err != nil {
panic(err)
}
defer file.Close()
res, err := http.Post("http://127.0.0.1:5050/upload", "binary/octet-stream", file)
if err != nil {
panic(err)
}
defer res.Body.Close()
message, _ := ioutil.ReadAll(res.Body)
fmt.Printf(string(message))
}
@wingyplus
Copy link

wingyplus commented Mar 7, 2018

@Keithwachira
Copy link

Keithwachira commented Jul 8, 2018

Thank you for this it helped me in writing my go file upload handler

@Henry75m39
Copy link

Henry75m39 commented Jun 25, 2019

I'm gonna to try it.

@robertranjan
Copy link

robertranjan commented Oct 16, 2020

@ebraminio, this code works well. Good job!
Quick question:
what are you doing with the anonymous go routine at line# 30 - 33 & the func upload()? Are they necessary?
Program works even if I commented them. Shall we safely ignore them?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment