SSDPy: Python SSDP library

SSDPy is a lightweight implementation of SSDP (Simple Service Discovery Protocol). It is designed for ease of use and high compatibility with the protocol in real-life use. It supports both the IETF and UPnP versions of the protocol. You can read the full documentation here.

Example usage

Send an SSDP discover packet (M-SEARCH):

>>> from ssdpy import SSDPClient
>>> client = SSDPClient()
>>> devices = client.m_search("ssdp:all")
>>> for device in devices:
...     print(device.get("usn"))
uuid:Dell-Printer-1_0-dsi-secretariat::urn:schemas-upnp-org:service:PrintBasic:1
uuid:00000000-0000-0000-0200-00125A8A0960::urn:schemas-microsoft-com:nhed:presence:1

Send an SSDP NOTIFY packet, telling others about a service:

>>> from ssdpy import SSDPServer
>>> server = SSDPServer("my-service-identifier")
>>> server.notify()

Start an SSDP server which responds to relevant M-SEARCHes:

>>> from ssdpy import SSDPServer
>>> server = SSDPServer("my-service-identifier", device_type="my-device-type")
>>> server.serve_forever()

Then, from a client, M-SEARCH for our server:

>>> from ssdpy import SSDPClient
>>> client = SSDPClient()
>>> devices = client.m_search("my-device-type")
>>> for device in devices:
...     print(device.get("usn"))
my-service-identifier

CLI utilities

SSDPy comes with two CLI utilities:

• ssdpy-server is a server that listens for M-SEARCHes and responds if they match its name.
• ssdpy-discover sends an M-SEARCH query and collects all responses.

Release checklist

• Update ssdpy/version.py with new version name.
• Update CHANGES.md.
• Commit the changes, tag with version & push.
• Run make release.

Links

• IETF draft of the protocl (still in use by some devices, e.g. redfish) https://tools.ietf.org/html/draft-cai-ssdp-v1-03
• UPnP Device Architecture 1.1 https://web.archive.org/web/20150905102426/http://upnp.org/specs/arch/UPnP-arch-DeviceArchitecture-v1.1.pdf
• UPnP Device Architecture 2.0 https://web.archive.org/web/20151107123618/http://upnp.org/specs/arch/UPnP-arch-DeviceArchitecture-v2.0.pdf