Add useragent and set version to 0.5.1

Author: eddiezane

sendgrid.go

@@ -7,9 +7,12 @@ import (
 	"net"
 	"net/http"
 	"net/url"
+	"strings"
 	"time"
 )
 
+const Version = "0.5.1"
+
 func timeoutHandler(network, address string) (net.Conn, error) {
 	return net.DialTimeout(network, address, time.Duration(5*time.Second))
 }
@@ -87,18 +90,24 @@ func (sg *SGClient) Send(m *SGMail) error {
 	if e != nil {
 		return e
 	}
-	r, e := sg.Client.PostForm(sg.APIMail, values)
+	req, e := http.NewRequest("POST", sg.APIMail, strings.NewReader(values.Encode()))
+	if e != nil {
+		return e
+	}
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("User-Agent", "sendgrid-go/"+Version+";go")
+	res, e := sg.Client.Do(req)
 	if e != nil {
-		return fmt.Errorf("sendgrid.go: error:%v; response:%v", e, r)
+		return fmt.Errorf("sendgrid.go: error:%v; response:%v", e, res)
 	}
-	
-	defer r.Body.Close()
-	
-	if r.StatusCode == http.StatusOK {
+
+	defer res.Body.Close()
+
+	if res.StatusCode == http.StatusOK {
 		return nil
 	}
-	
-	body, _ := ioutil.ReadAll(r.Body)
-	
-	return fmt.Errorf("sendgrid.go: code:%d error:%v body:%s", r.StatusCode, e, body)
+
+	body, _ := ioutil.ReadAll(res.Body)
+
+	return fmt.Errorf("sendgrid.go: code:%d error:%v body:%s", res.StatusCode, e, body)
 }