ESME_RALYBND in SMPP
What is ESME_RALYBND?
ESME_RALYBND (Error Code: 0x0000000B) is an SMPP error that indicates that the ESME (External Short Messaging Entity) is already bound. This happens when an SMPP client attempts to bind while an active session with the same system ID is already established.
Possible Causes
- The client is already bound but attempts another
bind_transmitter
,bind_receiver
, orbind_transceiver
request without unbinding first. - The previous session was not properly closed, leading the SMSC to believe that the client is still connected.
- Multiple instances of the same client with the same system ID are trying to bind at the same time.
- The SMSC enforces a restriction on concurrent binds for the same system ID.
When Does It Happen?
This error occurs when an SMPP client sends a bind request while it is already bound or if a previous connection was not properly closed.
Example SMPP PDU Transaction
The following is an example of an incorrect scenario where a second bind_transmitter
request is sent while already bound:
0000001C (Length) 00000002 (Command ID for bind_transmitter) 00000000 (Command Status) 00000001 (Sequence Number) 74657374 000000 (System ID: "test") 000000 (Password)
Issue: The client is already bound, and the SMSC rejects the second bind attempt with an ESME_RALYBND
response.
Correct approach:
- First, unbind before attempting a new bind:
- Wait for an
unbind_resp
before sending a new bind request.
00000010 (Length) 00000006 (Command ID for unbind) 00000000 (Command Status) 00000002 (Sequence Number)
How to Solve It?
- Ensure that only one active session exists per system ID.
- Before rebinding, send an
unbind
request and wait for anunbind_resp
from the SMSC. - Configure the client to detect and handle session timeouts or disconnections properly.
- Check for duplicate instances of the same client running concurrently.
- If the issue persists, contact the SMSC provider to confirm their session handling rules.
If the problem continues, enable debugging logs to trace bind requests and session states.
More information
- Operace SMPP ESME_ROK
- Jak vyřešit ESME_RINVCMDLEN v SMPP
- Chyba SMPP s kódem ESME RINVMSGLEN
- Chyba SMPP s kódem ESME_RINVCMDID
- Chyba SMPP s kódem ESME_RINVBNDSTS
- Chyba SMPP s kódem ESME_RALYBND
- Chyba SMPP s kódem ESME_RINVPRTFLG
- Chyba SMPP s kódem ESME_RINVREGDLVFLG
- Chyba SMPP s kódem ESME_RSYSERR
- Chyba SMPP s kódem ESME_RINVSRCADR
- Chyba SMPP s kódem ESME_RINVDSTADR
- Chyba SMPP: Neplatné ID zprávy
- Chyba SMPP s kódem ESME_RBINDFAIL
- Chyba SMPP s kódem ESME_RINVPASWD
- Chyba SMPP s kódem ESME_RINVSYSID
- Chyba SMPP s kódem ESME_RCANCELFAIL
- Chyba SMPP s kódem ESME_RREPLACEFAIL
- Chyba SMPP s kódem ESME_RMSGQFUL
- Chyba SMPP s kódem ESME_RINVSERTYP
- Chyba SMPP s kódem ESME_RINVNUMDESTS
- Chyba SMPP s kódem ESME_RINVDLNAME
- Chyba SMPP s kódem ESME_RINVDESTFLAG
- Chyba SMPP s kódem ESME_RINVSUBREP
- Chyba SMPP s kódem ESME_RINVESMCLASS
- Chyba SMPP s kódem ESME_RCNTSUBDL
- Chyba SMPP s kódem ESME_RSUBMITFAIL
- Chyba SMPP s kódem ESME_RINVSRCTON
- Chyba SMPP s kódem ESME_RINVSRCNPI
- Chyba SMPP s kódem ESME_RINVDSTTON
- Chyba SMPP s kódem ESME_RINVDSTNPI
- Chyba SMPP s kódem ESME_RINVSYSTYP
- Chyba SMPP s kódem ESME_RINVREPFLAG
- Chyba SMPP s kódem ESME_RINVNUMMSGS
- Chyba SMPP s kódem ESME_RTHROTTLED
- Chyba SMPP s kódem ESME_RINVSCHED
- Chyba SMPP s kódem ESME_RINVEXPIRY
- Chyba SMPP s kódem ESME_RINVDFTMSGID
- Chyba SMPP s kódem ESME_RX_T_APPN
- Chyba SMPP s kódem ESME_RX_P_APPN
- Chyba SMPP s kódem ESME_RX_R_APPN
- Chyba SMPP s kódem ESME_RQUERYFAIL
- Chyba SMPP s kódem ESME_RINVTLVSTREAM
- Chyba SMPP s kódem ESME_RTLVNOTALLWD
- Chyba SMPP s kódem ESME_RINVTLVLEN
- Chyba SMPP s kódem ESME_RMISSINGTLV
- Chyba SMPP s kódem ESME_RINVTLVVAL
- Chyba SMPP s kódem ESME_RDELIVERYFAILURE
- Chyba SMPP s kódem ESME_RUNKNOWNERR
- Chyba SMPP s kódem ESME_RSERTYPUNAUTH
- ESME_RPROHIBITED
- Chyba SMPP s kódem ESME_RSERTYPUNAVAIL
- Chyba SMPP s kódem ESME_RSERTYPDENIED
- Chyba SMPP s kódem ESME_RINVDCS
- Chyba SMPP s kódem ESME_RINVSRCADDRSUBUNIT
- Chyba SMPP s kódem ESME_RINVBCASTFREQINT
- Chyba SMPP s kódem ESME_RINVBCASTALIAS_NAME
- Chyba SMPP s kódem ESME_RINVBCASTAREAFMT
- Chyba SMPP s kódem ESME_RINVNUMBCAST_AREAS
- Chyba SMPP s kódem ESME_RINVBCASTCNTTYPE
- Chyba SMPP s kódem ESME_RINVBCASTMSGCLASS
- Chyba SMPP s kódem ESME_RBCASTFAIL
- Chyba SMPP s kódem ESME_RBCASTQUERYFAIL
- Chyba SMPP s kódem ESME_RBCASTCANCELFAIL
- Chyba SMPP s kódem ESME_RINVBCAST_REP
- Chyba SMPP s kódem ESME_RINVBCASTSRVGRP
- Chyba SMPP s kódem ESME_RINVBCASTCHANIND
- Rezervovaný chybový kód SMPP