by franklin@krave-n.com:

Below is a test program that illustrates the problem if applied against the attached
jpeg.

_, _, err := image.Decode(rdr)

"error image: unknown format"


---------------------------
package main

import (
    "bufio"
    "fmt"
    "image"
    "net/http"
    "os"
)

func main() {
    file, _ := os.Open("tryme.jpeg")
    defer file.Close()
    rdr := bufio.NewReader(file)
    bts, _ := rdr.Peek(512)
    contentType := http.DetectContentType(bts)
    fmt.Println(contentType)
    _, _, err := image.Decode(rdr)
    if err != nil {
        fmt.Println("error " + err.Error())

    }
    fmt.Println("done")
}

Attachments:

1. tryme.jpeg (2594 bytes)