client.go

package main

import (
	"bytes"
	"encoding/json"
	"log"
	"net/http"
	"os"
)

type Episode struct {
	PodID     uint    `json:"podid"`
	Created   string  `json:"created" `
	Updated   string  `json:"updated" `
	URL       string  `json:"url"`
	Downloads int32   `json:"downloads" `
	Blurb     string  `json:"blurb"`
	Data      os.File `json:"data" `
}

func main() {

	myfile, err := os.Create("./blah.txt")

	episode := Episode{
		PodID:   5,
		Created: "stuff",
		Updated: "stuff",
		URL:     "stuff",
		Blurb:   "a blurb",
		Data:    *myfile,
	}

	var buf bytes.Buffer
	err = json.NewEncoder(&buf).Encode(episode)

	if err != nil {
		log.Fatal(err)
	}

	client := http.Client{}
	req, err := http.NewRequest(http.MethodPost, "http://localhost:8080/upload", &buf)
	req.Header.Set("Content-Type", "application/json")

	if err != nil {
		log.Println(err)
	}

	client.Do(req)

}

server.go

func (e *UploadEpisodeHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {

	var episode models.Episode
	err := json.NewDecoder(req.Body).Decode(&episode)

	if err != nil {
		http.Error(w, "error", http.StatusInternalServerError)
		return
	}

	fileInfo, err := episode.Data.Stat()

	fmt.Println(fileInfo.Name())
	fmt.Println(fileInfo.Size())
	fmt.Println(fileInfo.ModTime())
	fmt.Println(fileInfo.Sys())

}