add proper image handling to http server

addons/http_server/http_server.gd

@@ -106,7 +106,7 @@ func __process_connection(connection: StreamPeerTCP) -> void:
 		body = PoolStringArray(body_parts).join("\r\n")
 
 	var response: Response = __process_request(method, endpoint, headers, body)
-	connection.put_data(response.to_utf8())
+	connection.put_data(response.get_data())
 
 
 func __process_request(method: String, endpoint: String, headers: Dictionary, body: String) -> Response:

addons/http_server/response.gd

@@ -11,6 +11,7 @@ var __headers: Dictionary = {
 	# value: Variant, header value
 }
 var __status: int = 200
+var __type: MimeTypeHelper.MimeType
 
 
 # Public methods
@@ -32,6 +33,10 @@ func status(status: int) -> void:
 	__status = status
 
 
+func type(type: MimeTypeHelper.MimeType) -> void:
+	__type = type
+
+
 func to_utf8() -> PoolByteArray:
 	var content = PoolStringArray()
 
@@ -45,6 +50,7 @@ func to_utf8() -> PoolByteArray:
 		data = JSON.print(data)
 
 	__headers['content-length'] = len(data)
+	__headers["content-type"] = "application/octet-stream" if !__type else __type.full_type
 
 	for header in __headers:
 		content.append("%s: %s" % [header, String(__headers[header])])
@@ -55,3 +61,48 @@ func to_utf8() -> PoolByteArray:
 		content.append(data)
 
 	return content.join("\r\n").to_utf8()
+
+
+func get_data() -> PoolByteArray:
+	var res = __response_headers()
+
+	var data = __data
+	if !data:
+		return res
+
+	var type: MimeTypeHelper.MimeType = __type
+	if !type:
+		type = MimeTypeHelper.MimeType.new()
+
+	if data is String: # else, assume data is PoolByteArray
+		data = data.to_utf8()
+
+	res.append_array(data)
+
+	return res
+
+
+# Private methods
+
+func __response_headers() -> PoolByteArray:
+	var res = PoolStringArray()
+
+	res.append(Status.code_to_status_line(__status))
+
+	var data = __data
+	if !data:
+		data = Status.code_to_description(__status)
+
+	__headers["content-length"] = len(data)
+
+	__headers["content-type"] = "application/octet-stream" if !__type else __type.full_type
+
+	for header in __headers:
+		res.append("%s: %s" % [header, String(__headers[header])])
+
+	res.append("")
+
+	var s = res.join("\r\n")
+	s = s + "\r\n"
+
+	return s.to_utf8()