client can upload now, but the response body is a whole page, not just

the url

client/client.go

@@ -1,28 +1,63 @@
 package client
 
 import (
-	"bufio"
 	"io/ioutil"
-	"mime"
 	"net/http"
   "net/url"
+  "log"
 	"os"
-	"path/filepath"
+  "mime/multipart"
+  "bytes"
+  "path"
+  "io"
 )
 
-func PutFileFromPath(host, filename string) (path string, err error) {
-	ext := filepath.Ext(filename)
-	file, err := os.Open(filename)
+func NewfileUploadRequest(uri, file_path string, params map[string]string) (*http.Request, error) {
+	file, err := os.Open(file_path)
 	if err != nil {
-		return
+		return nil, err
 	}
-	resp, err := http.Post(host, mime.TypeByExtension(ext), bufio.NewReader(file))
+	defer file.Close()
+
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+	part, err := writer.CreateFormFile("filename", path.Base(file_path))
 	if err != nil {
-		return
+		return nil, err
 	}
+	_, err = io.Copy(part, file)
+
+	for key, val := range params {
+		_ = writer.WriteField(key, val)
+	}
+  contentType := writer.FormDataContentType()
+	err = writer.Close()
+	if err != nil {
+		return nil, err
+	}
+
+  log.Println(uri)
+  req, err := http.NewRequest("POST", uri, body)
+  req.Header.Add("Content-Type", contentType)
+  return req, err
+}
+
+func PutFileFromPath(uri, file_path string, params map[string]string) (path string, err error) {
+  request, err := NewfileUploadRequest(uri, file_path, params)
+	if err != nil {
+		return "", err
+	}
+
+	client := &http.Client{}
+  resp, err := client.Do(request)
+	if err != nil {
+		return "", err
+	}
+  log.Printf("%#v",resp)
+  defer resp.Body.Close()
 	bytes, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
-		return
+		return "", err
 	}
 	return string(bytes), nil
 }