---
**[tickets:#449] GDB Server Should Return an Empty Response for Undefined GDB
Packets**
**Status:** new
**Milestone:** 0.10.0
**Created:** Wed Feb 12, 2025 07:01 PM UTC by patryk sondej
**Last Updated:** Wed Feb 12, 2025 07:01 PM UTC
**Owner:** nobody
Hi.
Not all undefined GDB packets return an empty response.
This is issue when debugging using LLDB. Since the openocd does not immediately
return an empty response, each `nexti` command becomes very slow due to LLDB
waiting for a receive timeout.
Eg:
```
(gdb) maintenance packet jThreadsInfo
sending: jThreadsInfo
Ignoring packet error, continuing...
error while fetching packet from remote target
(gdb) maintenance packet xxx
sending: xxx
received: ""
(gdb) maintenance packet jxxx
sending: jxxx
Ignoring packet error, continuing...
error while fetching packet from remote target
```
I found out, a lot of gdb packets in openocd has missing `else` with empty
response.
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