Updated on 2026-09-30 GMT+08:00

Query Details About a Generic-Protocol Configuration

Function

This API is used to query details about a generic-protocol configuration.

Calling Method

For details, see Calling APIs.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.

If you are using identity policy-based authorization, the following identity policy-based permissions are required.

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
iotda:protocolconfigs:query	Read	instance *	g:EnterpriseProjectId g:ResourceTag/<tag-key>	-	-

URI

GET /v5/iot/{project_id}/protocol-configs/{protocol_id}

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Parameter description : project ID. For details about how to obtain the project ID, see Obtaining a Project ID.
protocol_id	Yes	String	Parameter description: ID of the generic-protocol configuration.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
Instance-Id	No	String	Parameter description : instance ID. Unique identifier of each instance in the physical multi-tenant scenario. Mandatory for professional editions and recommended in other cases. Log in to the IoTDA console and choose Overview in the navigation pane to view the instance ID. For details, see Viewing Instance Details.

Response Parameters

Status code: 200

**Table 3** Response body parameters
Parameter	Type	Description
protocol_id	String	Parameter description: ID of the generic-protocol configuration.
port	Integer	Parameter description: port number configured for the generic protocol.
keepalive_timeout	Integer	Parameter description: connection idle timeout, in seconds.
protocol_type	String	Parameter description: protocol type. Value: TCP (general TCP access).
description	String	Parameter description: description of the generic protocol. Value: The value can contain a maximum of 2,048 characters. Only letters, digits, and special characters (_?'#().,&%@!-) are allowed.
ssl_enable	Boolean	Parameter description: whether to enable TLS encrypted transmission.
frame_decode_configs	Array of FrameDecodeConfig objects	Parameter description: stream segmentation/reassembly configuration list.
codec_mode	String	Parameter description: Codec type. Value: FGS: The codec plug-in is deployed to FunctionGraph as a function. PLUGIN: The codec plug-in is deployed to IoTDA as an OSGi plug-in. To use this mode, submit a service ticket to contact technical support.
func_urn	String	Parameter description: Uniform Resource Name (URN) of a function, which uniquely identifies the function. It is the address of the function that uses FGS for encoding and decoding. Value: The value can contain a maximum of 256 characters. Only letters, digits, underscores (_), hyphens (-), and colons (:) are allowed.
create_time	String	Parameter description: time when the custom authentication is queried in the IoT platform. The value is in the format of yyyyMMdd'T'HHmmss'Z', for example, 20151212T121212Z.
update_time	String	Parameter description: updated time when the custom authentication is queried in the IoT platform. The value is in the format of yyyyMMdd'T'HHmmss'Z', for example, 20151212T121212Z.

**Table 4** FrameDecodeConfig
Parameter	Type	Description
frame_decode_type	String	Parameter description: packet segmentation and reassembly rule. Value: DELIMITER: Data packets are split or combined using specific delimiters (such as commas and newline characters). FIXED_LENGTH: Each frame of data is split or combined based on a fixed byte length. FIELD_LENGTH: The length of each frame is variable. Data packets are split or combined based on the length field carried in the packets.
max_frame_length	Integer	Parameter description: maximum length of a single frame. This parameter is mandatory when the segmentation rule is DELIMITER\|FIELD_LENGTH.
delimiter	String	Parameter description: delimiter, in hex string format. This parameter is mandatory when the segmentation rule is DELIMITER.
fixed_frame_length	Integer	Parameter description: fixed length of a single frame. This parameter is mandatory when the segmentation rule is FIXED_LENGTH.
field_offset	Integer	Parameter description: start position (offset) of the specified length field in the data packet. This parameter is mandatory when the segmentation rule is FIELD_LENGTH.
field_length	Integer	Parameter description: number of bytes occupied by the specified length field. This parameter is mandatory when the segmentation rule is FIELD_LENGTH.
initial_bytes	String	Parameter description: start character, in hex string format. This parameter is optional when the segmentation rule is FIXED_LENGTH.
adjustment_length	Integer	Parameter description: value of the adjustment length field. This parameter is optional when the segmentation rule is FIELD_LENGTH.
initial_bytes_to_strip	Integer	Parameter description: number of bytes to be removed from the data packet after decoding. Generally, this parameter is used to remove the length field and retain only the data content. This parameter is optional when the segmentation rule is FIELD_LENGTH.

Example Requests

Queries details about a generic-protocol configuration with a specified ID.

GET https://{endpoint}/v5/iot/{project_id}/protocol-configs/{protocol_id}

Example Responses

Status code: 200

{
  "protocol_id" : "9739d740-4da1-46e1-8075-77145265cd92",
  "port" : 6886,
  "protocol_type" : "TCP",
  "description" : "tcp protocol",
  "frame_decode_configs" : [ {
    "frame_decode_type" : "DELIMITER",
    "max_frame_length" : 200,
    "delimiter" : "]"
  } ],
  "codec_mode" : "FGS",
  "keepalive_timeout" : 600,
  "ssl_enable" : true,
  "func_urn" : "urn:fss:cn-north-5:d92d9c5eb8e347b5bb31ecfe5bc0c4e1:function:default:mqtt_auth:latest",
  "create_time" : "20231031T070547Z",
  "update_time" : "20231031T070547Z"
}

Status Codes

Status Code	Description
200	OK
400	Bad Request
401	Unauthorized
403	Forbidden
404	Not Found
500	Internal Server Error

Error Codes

See Error Codes.

Parent topic: Generic-Protocol Configuration Management