Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

v5.1.2

Espressif SoC revision.

ESP32-S3

Operating System used.

Windows

How did you build your project?

Command line with idf.py

If you are using Windows, please specify command line type.

CMD

Development Kit.

Custom board with esp32s3-wroom-1

Power Supply used.

USB

What is the expected behavior?

I expect esp_transport_read_internal() to wait up to timeout_ms milliseconds to read data.

What is the actual behavior?

When reading a websocket header, and the buffer layer has 1B inside it, esp_transport_read_internal() returns 1B, and ws_read_header() does not check for this, so the stream becomes misaligned by 1B. Then WS parsing is corrupt and parser cannot be realigned.

Steps to reproduce.

1. Decrease MTU to minimum
2. Setup server to send random-length WS frames
3. Hope that somehow we align on 1B buffer boundary
4. add assert(rlen==header) to ws_read_header() after esp_transport_read_internal()

Debug Logs.

I (11887) SIOC: unhandled text msg:~

^This is because "~" is the next byte of the websocket header.

More Information.

No response