add status codes

response.go

@@ -8,7 +8,7 @@ import (
 
 // Response is a RTSP response.
 type Response struct {
-	StatusCode int
+	StatusCode StatusCode
 	Status     string
 	Header     Header
 	Content    []byte
@@ -34,10 +34,10 @@ func readResponse(br *bufio.Reader) (*Response, error) {
 	statusCodeStr := string(byts[:len(byts)-1])
 
 	statusCode64, err := strconv.ParseInt(statusCodeStr, 10, 32)
-	res.StatusCode = int(statusCode64)
 	if err != nil {
 		return nil, fmt.Errorf("unable to parse status code")
 	}
+	res.StatusCode = StatusCode(statusCode64)
 
 	byts, err = readBytesLimited(br, '\r', 255)
 	if err != nil {

response_test.go

@@ -21,7 +21,7 @@ var casesResponse = []struct {
 			"\r\n",
 		),
 		&Response{
-			StatusCode: 200,
+			StatusCode: StatusOK,
 			Status:     "OK",
 			Header: Header{
 				"CSeq":   []string{"1"},
@@ -40,7 +40,7 @@ var casesResponse = []struct {
 			"\r\n",
 		),
 		&Response{
-			StatusCode: 200,
+			StatusCode: StatusOK,
 			Status:     "OK",
 			Header: Header{
 				"CSeq":    []string{"2"},

statuscodes.go

@@ -0,0 +1,60 @@
+package gortsplib
+
+// StatusCode is a RTSP response status code.
+type StatusCode int
+
+// https://tools.ietf.org/html/rfc7826#section-17
+const (
+	StatusContinue StatusCode = 100
+
+	StatusOK = 200
+
+	StatusMovedPermanently = 301
+	StatusFound            = 302
+	StatusSeeOther         = 303
+	StatusNotModified      = 304
+	StatusUseProxy         = 305
+
+	StatusBadRequest                         = 400
+	StatusUnauthorized                       = 401
+	StatusPaymentRequired                    = 402
+	StatusForbidden                          = 403
+	StatusNotFound                           = 404
+	StatusMethodNotAllowed                   = 405
+	StatusNotAcceptable                      = 406
+	StatusProxyAuthRequired                  = 407
+	StatusRequestTimeout                     = 408
+	StatusGone                               = 410
+	StatusPreconditionFailed                 = 412
+	StatusRequestEntityTooLarge              = 413
+	StatusRequestURITooLong                  = 414
+	StatusUnsupportedMediaType               = 415
+	StatusParameterNotUnderstood             = 451
+	StatusIllegalConferenceIdentifier        = 452
+	StatusNotEnoughBandwidth                 = 453
+	StatusSessionNotFound                    = 454
+	StatusMethodNotValidInThisState          = 455
+	StatusHeaderFieldNotValidForResource     = 456
+	StatusInvalidRange                       = 457
+	StatusParameterIsReadOnly                = 458
+	StatusAggregateOperationNotAllowed       = 459
+	StatusOnlyAggregateOperationAllowed      = 460
+	StatusUnsupportedTransport               = 461
+	StatusDestinationUnreachable             = 462
+	StatusDestinationProhibited              = 463
+	StatusDataTransportNotReadyYet           = 464
+	StatusNotificationReasonUnknown          = 465
+	StatusKeyManagementError                 = 466
+	StatusConnectionAuthorizationRequired    = 470
+	StatusConnectionCredentialsNotAccepted   = 471
+	StatusFailureToEstablishSecureConnection = 472
+
+	StatusInternalServerError     = 500
+	StatusNotImplemented          = 501
+	StatusBadGateway              = 502
+	StatusServiceUnavailable      = 503
+	StatusGatewayTimeout          = 504
+	StatusRTSPVersionNotSupported = 505
+	StatusOptionNotSupported      = 551
+	StatusProxyUnavailable        = 553
+)