Package 

Enum Protocol

  • All Implemented Interfaces:
    java.io.Serializable , java.lang.Comparable 
    
public enum Protocol

    Protocols that OkHttp implements for ALPN selection.

    Protocol vs Scheme Despite its name, getProtocol returns the scheme (http, https, etc.) of the URL, not the protocol (http/1.1, spdy/3.1, etc.). OkHttp uses the word protocol to identify how HTTP messages are framed.

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      QUIC

      QUIC (Quick UDP Internet Connection) is a new multiplexed and secure transport atop UDP,designed from the ground up and optimized for HTTP/2 semantics.HTTP/1.1 semantics are layered on HTTP/2.

      QUIC is not natively supported by OkHttp, but provided to allow a theoreticalinterceptor that provides support.
      H2_PRIOR_KNOWLEDGE

      Cleartext HTTP/2 with no "upgrade" round trip. This option requires the client to have priorknowledge that the server supports cleartext HTTP/2.
      HTTP_2

      The IETF's binary-framed protocol that includes header compression, multiplexing multiplerequests on the same socket, and server-push. HTTP/1.1 semantics are layered on HTTP/2.

      HTTP/2 requires deployments of HTTP/2 that use TLS 1.2 support , present in Java 8+ and Android 5+. Serversthat enforce this may send an exception message including the string {@code * INADEQUATE_SECURITY}.
      SPDY_3

      Chromium's binary-framed protocol that includes header compression, multiplexing multiplerequests on the same socket, and server-push. HTTP/1.1 semantics are layered on SPDY/3.

      Current versions of OkHttp do not support this protocol.
      HTTP_1_1

      A plaintext framing that includes persistent connections.

      This version of OkHttp implements RFC7230, and tracks revisions to that spec.
      HTTP_1_0

      An obsolete plaintext framing that does not use persistent sockets by default.

    • Method Summary

      Modifier and Type Method Description
      static Protocol get(String protocol) Returns the protocol identified by {@code protocol}.
      String toString() Returns the string used to identify this protocol for ALPN, like "http/1.1", "spdy/3.1" or"h2".
      static Array<Protocol> values()
      static Protocol valueOf(String name)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait