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paho.mqtt.javascript
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How to distinguish reason if failed to connect #244

Open Karl-Sparticle opened 2 years ago

Karl-Sparticle commented 2 years ago

Hi, Can u provide some advices to distinguish the reason if failed to connect.

  1. network problem
  2. bad username/password
  3. ...

I found nothing from the error code list.

OK: {code:0, text:"AMQJSC0000I OK."}, CONNECT_TIMEOUT: {code:1, text:"AMQJSC0001E Connect timed out."}, SUBSCRIBE_TIMEOUT: {code:2, text:"AMQJS0002E Subscribe timed out."}, UNSUBSCRIBE_TIMEOUT: {code:3, text:"AMQJS0003E Unsubscribe timed out."}, PING_TIMEOUT: {code:4, text:"AMQJS0004E Ping timed out."}, INTERNAL_ERROR: {code:5, text:"AMQJS0005E Internal error. Error Message: {0}, Stack trace: {1}"}, CONNACK_RETURNCODE: {code:6, text:"AMQJS0006E Bad Connack return code:{0} {1}."}, SOCKET_ERROR: {code:7, text:"AMQJS0007E Socket error:{0}."}, SOCKET_CLOSE: {code:8, text:"AMQJS0008I Socket closed."}, MALFORMED_UTF: {code:9, text:"AMQJS0009E Malformed UTF data:{0} {1} {2}."}, UNSUPPORTED: {code:10, text:"AMQJS0010E {0} is not supported by this browser."}, INVALID_STATE: {code:11, text:"AMQJS0011E Invalid state {0}."}, INVALID_TYPE: {code:12, text:"AMQJS0012E Invalid type {0} for {1}."}, INVALID_ARGUMENT: {code:13, text:"AMQJS0013E Invalid argument {0} for {1}."}, UNSUPPORTED_OPERATION: {code:14, text:"AMQJS0014E Unsupported operation."}, INVALID_STORED_DATA: {code:15, text:"AMQJS0015E Invalid data in local storage key={0} value={1}."}, INVALID_MQTT_MESSAGE_TYPE: {code:16, text:"AMQJS0016E Invalid MQTT message type {0}."}, MALFORMED_UNICODE: {code:17, text:"AMQJS0017E Malformed Unicode string:{0} {1}."}, BUFFER_FULL: {code:18, text:"AMQJS0018E Message buffer is full, maximum buffer size: {0}."},