ISO 18626:2017 pdf download – Information and documentation — Interlibrary Loan Transactions. 5.2.1 Applications acting as initiators Applications acting as initiators must support at least one of the following transport protocols: — HTTP; — HTTPS. 5.2.2 Applications acting as responders Applications acting as responders must support all of the following transport protocols: — HTTP; — HTTPS. The selection of the transport protocol by the initiator of a message dictates the transport protocol used by the responder. The responder must respond using the same connection and therefore, the same transport protocol that was used by the initiator. All ISO 18626 messages...