public enum HttpProtocol extends Enum<HttpProtocol>
Enum Constant and Description |
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H2
HTTP/2.0 support with TLS
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H2C
HTTP/2.0 support with clear-text.
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HTTP11
The default supported HTTP protocol by HttpServer and HttpClient
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Modifier and Type | Method and Description |
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static HttpProtocol |
valueOf(String name)
Returns the enum constant of this type with the specified name.
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static HttpProtocol[] |
values()
Returns an array containing the constants of this enum type, in
the order they are declared.
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public static final HttpProtocol HTTP11
public static final HttpProtocol H2
If used along with HTTP/1.1 protocol, HTTP/2.0 will be the preferred protocol. While negotiating the application level protocol, HTTP/2.0 or HTTP/1.1 can be chosen.
If used without HTTP/1.1 protocol, HTTP/2.0 will always be offered as a protocol for communication with no fallback to HTTP/1.1.
public static final HttpProtocol H2C
If used along with HTTP/1.1 protocol, will support H2C "upgrade": Request or consume requests as HTTP/1.1 first, looking for HTTP/2.0 headers and Connection: Upgrade. A server will typically reply a successful 101 status if upgrade is successful or a fallback HTTP/1.1 response. When successful the client will start sending HTTP/2.0 traffic.
If used without HTTP/1.1 protocol, will support H2C "prior-knowledge": Doesn't require Connection: Upgrade handshake between a client and server but fallback to HTTP/1.1 will not be supported.
public static HttpProtocol[] values()
for (HttpProtocol c : HttpProtocol.values()) System.out.println(c);
public static HttpProtocol valueOf(String name)
name
- the name of the enum constant to be returned.IllegalArgumentException
- if this enum type has no constant with the specified nameNullPointerException
- if the argument is null