Package Request:

- add content length header helper function
- add control with length of result marshall body with function jsonbody
- add set content length header in function jsonbody

request/body.go

@@ -32,16 +32,21 @@ import (
 	"io"
 )
 
-const contentTypeJson = "application/json"
+const (
+	contentTypeJson = "application/json"
+)
 
 func (r *request) BodyJson(body interface{}) error {
 	if p, e := json.Marshal(body); e != nil {
 		return e
+	} else if len(p) < 1 {
+		return ErrorInvalidBody.Error()
 	} else {
+		r.ContentType(contentTypeJson)
+		r.ContentLength(uint64(len(p)))
 		r._BodyReader(bytes.NewBuffer(p))
 	}
 
-	r.ContentType(contentTypeJson)
 	return nil
 }
 

request/errors.go

@@ -36,6 +36,7 @@ const (
 	ErrorParamEmpty liberr.CodeError = iota + liberr.MinPkgRequest
 	ErrorParamInvalid
 	ErrorValidatorError
+	ErrorInvalidBody
 	ErrorCreateRequest
 	ErrorSendRequest
 	ErrorResponseInvalid
@@ -61,6 +62,8 @@ func getMessage(code liberr.CodeError) (message string) {
 		return "at least one given parameters is invalid"
 	case ErrorValidatorError:
 		return "config seems to be invalid"
+	case ErrorInvalidBody:
+		return "marshalled body seems to be invalid"
 	case ErrorCreateRequest:
 		return "cannot create http request for given params"
 	case ErrorSendRequest:

request/header.go

@@ -26,12 +26,19 @@
 
 package request
 
-import "net/url"
+import (
+	"fmt"
+	"net/url"
+)
 
 func (r *request) ContentType(mime string) {
 	r.SetHeader(_ContentType, mime)
 }
 
+func (r *request) ContentLength(size uint64) {
+	r.SetHeader(__ContentLength, fmt.Sprintf("%d", size))
+}
+
 func (r *request) CleanHeader() {
 	r.s.Lock()
 	defer r.s.Unlock()

request/model.go

@@ -42,6 +42,7 @@ import (
 
 const (
 	_ContentType         = "Content-Type"
+	__ContentLength      = "Content-Length"
 	_Authorization       = "Authorization"
 	_AuthorizationBearer = "Bearer"
 	_AuthorizationBasic  = "Basic"