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Improvements to the Jetty documentation.

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Fixed HTTP/2 example and documentation of the programming guide.

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>
This commit is contained in:
Simone Bordet 2021-01-25 21:51:54 +01:00
parent 52499bfeea
commit 1f6c25cfb1
2 changed files with 6 additions and 2 deletions
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6
jetty-documentation/src/main/asciidoc/programming-guide/server/http/server-http-connector.adoc
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@ -136,7 +136,11 @@ Jetty supports ALPN and encrypted HTTP/2 with this configuration:
include::../../{doc_code}/org/eclipse/jetty/docs/programming/server/http/HTTPServerDocs.java[tags=tlsALPNHTTP]
----
Note how the ``ConnectionFactory``s passed to `ServerConnector` are in order: TLS, ALPN, HTTP/1.1, HTTP/2.
Note how the ``ConnectionFactory``s passed to `ServerConnector` are in order: TLS, ALPN, HTTP/2, HTTP/1.1.
Jetty starts parsing TLS bytes so that it can obtain the ALPN extension.
With the ALPN extension information, Jetty can negotiate a protocol and pick, among the ``ConnectionFactory``s supported by the `ServerConnector`, the `ConnectionFactory` correspondent to the negotiated protocol.
The fact that the HTTP/2 protocol comes before the HTTP/1.1 protocol indicates that HTTP/2 is the preferred protocol for the server.
Note also that the default protocol set in the ALPN ``ConnectionFactory``, which is used in case ALPN is not supported by the client, is HTTP/1.1 -- if the client does not support ALPN is probably an old client so HTTP/1.1 is the safest choice.

2
jetty-documentation/src/main/java/org/eclipse/jetty/docs/programming/server/http/HTTPServerDocs.java
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@ -331,7 +331,7 @@ public class HTTPServerDocs
SslConnectionFactory tls = new SslConnectionFactory(sslContextFactory, alpn.getProtocol());
// The ServerConnector instance.
ServerConnector connector = new ServerConnector(server, tls, alpn, http11, h2);
ServerConnector connector = new ServerConnector(server, tls, alpn, h2, http11);
connector.setPort(8443);
server.addConnector(connector);