esp_usrsctp

Userspace SCTP stack (usrsctp) port for ESP-IDF.

Used for WebRTC data channels and other SCTP-based protocols on ESP32-series chips.

Features

• usrsctp pinned at fork commit 32bb935 (vikramdattu/usrsctp)
• LWIP integration (built with SCTP_USE_LWIP)
• ESP-specific patches:
  • SPIRAM stack allocation for usrsctp threads
  • Thread-safe netif API support
  • sin6 overflow fix
  • LWIP support layer

Add to a project

idf.py add-dependency "vikramdattu/esp_usrsctp^1.0.0"

Or in your project's main/idf_component.yml:

dependencies:
  vikramdattu/esp_usrsctp: "^1.0.0"

Supported targets

esp32, esp32s2, esp32s3, esp32c3, esp32c5, esp32c6, esp32p4. Requires ESP-IDF >= 5.4.

Source

This wrapper bundles a fork of sctplab/usrsctp as a submodule (vikramdattu/usrsctp). The fork carries ESP-specific patches on top of upstream.

License

BSD-3-Clause (see LICENSE.md), matching upstream usrsctp.