harmony 鸿蒙mDNS Error Codes
mDNS Error Codes
NOTE
This topic describes only module-specific error codes. For details about universal error codes, see Universal Error Codes.
2100002 Service Connection Failure
Error Message
Operation failed. Cannot connect to service.
Description
This error code is reported if a service connection failure occurs.
Possible Causes
The service is abnormal.
Procedure
Check whether system services are running properly.
2100003 System Internal Error
Error Message
System internal error.
Description
This error code is reported if a system internal error occurs.
Possible Causes
The memory is abnormal.
A null pointer is present.
Procedure
Check whether the memory space is sufficient. If not, clear the memory and try again.
Check whether the system is normal. If not, try again later or restart the device.
2204003 Repeated Registration
Error Message
Callback duplicated.
Description
The callback already exists.
Possible Causes
An mDNS service with the same name and type is repeatedly registered.
Procedure
Check whether the mDNS service to be registered already exists.
2204008 Service Deletion Failure
Error Message
Service instance duplicated.
Description
The service to be removed does not exist.
Possible Causes
The service has been deleted.
Procedure
Check whether the mDNS service to be deleted exists.
2204010 Message Sending Failure
Error Message
Send packet failed.
Description
Messages fail to be sent through an mDNS service.
Possible Causes
The mDNS service does not exist on the LAN.
Procedure
Check whether the target mDNS service exists on the LAN.
2204006 Service Resolution Timeout
Error Message
Request timeout.
Description
mDNS services of the specified type fail to be resolved.
Possible Causes
mDNS services of the specified type do not exist on the LAN.
Procedure
Check whether mDNS services of the specified type exist on the LAN.
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