In the GB28181 project, what is the meaning of calling the eXosip_register_send_register function and the return value is -2 or -3

1. The reason why eXosip_register_send_register returns -2:

In the GB28181 project, calling eXosip_register_send_registerthe function and returning a value of -2 usually indicates that the registration sending failed. The meaning of this return value is that the registration request was rejected, which may be due to authentication failure or other reasons.

The following are possible reasons for this return value:

1. Authentication Failure: The server rejected the registration request, possibly because an incorrect username or password was provided, or the correct credentials were not provided. Please ensure that the credentials you provided are correct and have access.

2. Duplicate Registration: The server may reject the request due to a duplicate registration. In some cases, the server may only allow one registration, and if you try to register more than once, the server may deny the request.

3. Malformed registration information: The server may reject the request because the information provided in the registration request is malformed or missing required fields.

4. Server failure: This could be due to a server failure or misconfiguration. Please contact your server administrator for more details.

To more precisely determine the problem, you may need to review relevant error logs or debug information. This information can provide more specific reasons and context as to why the registration send failed.

2. The reason why eXosip_register_send_register returns -3:

In the GB28181 project, calling eXosip_register_send_registera function and returning a value of -3 usually indicates that the registration sending failed. The meaning of this return value is that the registration request failed to be sent successfully.

There are several possible reasons for this return value:

1. Network connection issues: The registration request could not be sent due to a network connection failure or misconfiguration. Please make sure your network connection is working and your configuration is correct.

2. Bad registration information: regThere may be a problem with the registration information provided in the parameter. Please check that the format, content and required fields of the registration information are correct.

3. Authentication failed: The registration request was rejected by the server, possibly due to an authentication failure. Please ensure that the authentication credentials you provided (such as username and password) are correct and that you have access.

4. Server problem: There may be some problems on the server side that prevent the registration request from being successfully processed. You can try resending the registration request, or contact your server administrator for more details.

To more precisely determine the problem, you may need to review relevant error logs or debug information. This information can provide more specific reasons and context as to why the registration send failed.

3. The following are some common return values ​​and their meanings:

• OSIP_SUCCESS(0): The operation completed successfully.

• OSIP_UNDEFINED_ERROR(-1): Undefined error.

• OSIP_BADPARAMETER(-2): Wrong parameter passed to function.

• OSIP_WRONG_STATE(-3): The operation was performed in the wrong state.

• OSIP_NOMEM(-4): Insufficient memory.

• OSIP_SYNTAXERROR(-5): Syntax error.

• OSIP_NOTFOUND(-6): The specified resource or object was not found.

• OSIP_API_NOT_INITIALIZED(-7): API not initialized.

• OSIP_NO_NETWORK(-10): No network connection available.

• OSIP_PORT_BUSY(-11): The port is already in use.

• OSIP_UNKNOWN_HOST(-12): Unable to resolve the specified hostname.

• OSIP_DISK_FULL(-30): Disk space is full.

• OSIP_NO_RIGHTS(-31): Operation denied, insufficient privileges.

• OSIP_FILE_NOT_EXIST(-32): The file does not exist.

• OSIP_TIMEOUT(-50): The operation timed out.

• OSIP_TOOMUCHCALL(-51): The maximum number of invocations of the operation was reached.

• OSIP_WRONG_FORMAT(-52): Bad format.

• OSIP_NOCOMMONCODEC(-53): No generic codecs available.

These return values ​​are used to indicate the result of an operation or to report possible error conditions. The specific meaning can be further understood according to the documentation of the library or framework used.