initial parsing of requests

messages.go

@@ -26,15 +26,35 @@ const (
 	booleanIntegerTag = 0x22
 	enumValueTag      = 0x23
 	// Character string values
-	textWithoutLanguagage = 0x41
-	nameWithoutLanguagage = 0x42
-	keyword               = 0x44
-	uri                   = 0x45
-	uriScheme             = 0x46
-	charset               = 0x47
-	naturalLanguagage     = 0x48
-	mimeMediaType         = 0x49
-	memberAttrName        = 0x4a
+	textWithoutLanguagageValueTag = 0x41
+	nameWithoutLanguagageValueTag = 0x42
+	keywordValueTag               = 0x44
+	uriValueTag                   = 0x45
+	uriSchemeValueTag             = 0x46
+	charsetValueTag               = 0x47
+	naturalLanguagageValueTag     = 0x48
+	mimeMediaTypeValueTag         = 0x49
+	memberAttrNameValueTag        = 0x4a
+)
+
+// Operation-id, defined in rfc8011
+const (
+	PrintJob             = 0x0002
+	PrintURI             = 0x0003
+	ValidateJob          = 0x0004
+	CreateJob            = 0x0005
+	SendDocument         = 0x0006
+	SendURI              = 0x0007
+	CancelJob            = 0x0008
+	GetJobAttributes     = 0x0009
+	GetJobs              = 0x000a
+	GetPrinterAttributes = 0x000b
+	HoldJob              = 0x000c
+	ReleaseJob           = 0x000d
+	RestartJob           = 0x000e
+	PausePrinter         = 0x0010
+	ResumePrinter        = 0x0011
+	PurgeJobs            = 0x0012
 )
 
 type ippRequestHeader struct {
@@ -42,3 +62,9 @@ type ippRequestHeader struct {
 	operationId   uint16
 	requestId     uint32
 }
+
+type ippRequest struct {
+	header              ippRequestHeader
+	operationAttributes map[string]string
+	requestedAttributes []string
+}