The Designer comes with many adapters (see Adapters) that allow you to access a variety of backends via different interfaces. Requests to REST services, and via REST adapters use the HTTP protocol.

• With this protocol, the xUML Runtime serves a set of standard headers (via libcurl) as described below (Standard HTTP Headers with xUML Service Adapters).
• Also, the Runtime provides interfaces to act as a variety of services. In general, the Runtime supports HTTP 1.0 for services but some features of HTTP 1.1 are implemented as well (see Standard HTTP Headers with Service Implementations below).

Standard HTTP Headers with xUML Service Adapters

SOAP, REST and URL adapters use libcurl to provide HTTP headers.

For more information on specific adapters refer to Adapters.

Standard HTTP Headers with Service Implementations

In general, the PAS platform supports HTTP version 1.0 for xUML services. However, the following features of HTTP 1.1 are implemented to the xUML Runtime as well:

• Expect: 100 Continue
• Transfer-Encoding: chunked

• Div
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