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Hospido — talking to SES.Hospedajes from C# without the WSDL pain

PR 2 of 3: the SES protocol library and state machine just landed. The dashboard is next.

hospido ses-hospedajes dotnet building-in-public

Two weeks ago I introduced the Hospido SES one-click submission feature. The plan was a three-release rollout: foundation, then protocol, then the dashboard the property owner actually clicks. The protocol piece just merged.

What that means in plain Spanish: Hospido can now construct a legally valid Parte de Viajero XML, zip and base64-encode it, wrap it in the SOAP envelope SES.Hospedajes expects, post it with HTTP Basic Auth, and parse the response — including the awkward case where SES is "in process" and needs polling, or where it accepts most of a batch but rejects one registration because someone typed a passport number that's too short to be a Spanish DNI. The state machine knows how to react to each outcome: confirm the booking, queue an automatic retry, surface a plain-language rejection to the owner, or transition to "no enviado" when credentials have expired.

I made one deliberate choice that's worth flagging: no WCF dynamic client, no auto-generated C# from the WSDL. The SES protocol is shallow — one submit operation, one polling operation — and the WSDL has been quietly revised more than once. Hand-rolling the XML and SOAP envelope keeps every byte transparent to the next engineer who looks at it, and the unit tests pin the wire format against a golden fixture so accidental drift is caught immediately. 143 tests now exercise the protocol from corner to corner.

Next release: the cockpit. Owner-side dashboard with the per-row status badges, batch submit, the automatic retry worker, and the audit history view. Then María at Casa de Doña Concha can finally stop opening the SES portal by hand.

Published June 12, 2026