HTTP/2

E6319
Hypertext Transfer Protocol version application layer protocol network protocol

HTTP/2 is a major revision of the Hypertext Transfer Protocol that introduced features like multiplexing, header compression, and server push to significantly improve web performance over HTTP/1.1.

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Observed surface forms (7)

Surface form Occurrences
RFC 7540 3
HPACK 1
HTTP/2 framing layer 1

Statements (55)

Predicate Object
instanceOf Hypertext Transfer Protocol version ⓘ
application layer protocol ⓘ
network protocol ⓘ
backwardsCompatibleWith HTTP/1.1 semantics ⓘ
canBeUsedOver TLS ⓘ
cleartext TCP ⓘ
cleartextUpgradeMechanism HTTP Upgrade header ⓘ
compatibleWith HTTP URIs ⓘ
HTTP methods ⓘ
HTTP semantics ⓘ
HTTP status codes ⓘ
defaultPortOverCleartext 80 ⓘ
defaultPortOverTLS 443 ⓘ
definedInRFC HTTP/2 self-linksurface differs ⓘ
surface form: RFC 7540

RFC 7541 ⓘ
doesNotChange HTTP authentication semantics ⓘ
HTTP caching semantics ⓘ
HTTP cookies semantics ⓘ
URI scheme semantics ⓘ
follows HTTP/1.1 ⓘ
headerCompressionAlgorithm HPACK ⓘ
improves web performance ⓘ
influencedBy SPDY ⓘ
layer application layer ⓘ
multiplexingAllows multiple concurrent streams over a single TCP connection ⓘ
negotiatedVia ALPN ⓘ
obsoletedBy HTTP/3 (for many deployments) ⓘ
originatedFrom SPDY ⓘ
partOf TCP/IP ⓘ
surface form: Internet protocol suite
publicationYear 2015 ⓘ
reduces header overhead ⓘ
latency ⓘ
replaces text-based message framing of HTTP/1.1 ⓘ
securityRecommendation use over TLS ⓘ
serverPushAllows sending resources before client requests them ⓘ
standardizedBy Internet Engineering Task Force ⓘ
surface form: IETF
status Proposed Standard ⓘ
streamIdentifierType integer ⓘ
successorTo HTTP/1.1 ⓘ
supportsFeature binary framing ⓘ
flow control ⓘ
header compression ⓘ
multiplexing ⓘ
persistent connections ⓘ
request pipelining without head-of-line blocking at HTTP layer ⓘ
server push ⓘ
stream prioritization ⓘ
TLSALPNIdentifier h2 ⓘ
transportProtocol Transmission Control Protocol ⓘ
surface form: TCP
uses binary framing layer ⓘ
usesConcept connections ⓘ
frames ⓘ
messages ⓘ
streams ⓘ
usesHeaderCompressionSpecification HTTP/2 self-linksurface differs ⓘ
surface form: HPACK

Referenced by (22)

Full triples — surface form annotated when it differs from this entity's canonical label.

RFC 7541 → appliesTo → HTTP/2 ⓘ
this entity surface form: HTTP/2 intermediaries
HTTP/1.1 → coexistsWith → HTTP/2 ⓘ
HTTP/2 → definedInRFC → HTTP/2 self-linksurface differs ⓘ
this entity surface form: RFC 7540
RFC 9113 → defines → HTTP/2 ⓘ
this entity surface form: HTTP/2 framing layer
RFC 9113 → definesConcept → HTTP/2 ⓘ
this entity surface form: HTTP/2 server push
RFC 9113 → definesConcept → HTTP/2 ⓘ
this entity surface form: HTTP/2 stream states
RFC 9113 → definesConcept → HTTP/2 ⓘ
this entity surface form: HTTP/2 graceful shutdown
SPDY → influenced → HTTP/2 ⓘ
RFC 9113 → obsoletes → HTTP/2 ⓘ
this entity surface form: RFC 7540
RFC 9114 → obsoletes → HTTP/2 ⓘ
this entity surface form: RFC 7540
RFC 9114 → obsoletes → HTTP/2 ⓘ
RFC 7541 → relatedTo → HTTP/2 ⓘ
RFC 9205 → relatedTo → HTTP/2 ⓘ
RFC 9113 → specifiesProtocol → HTTP/2 ⓘ
HTTP → successorOf → HTTP/2 ⓘ
subject surface form: HTTP/3
HTTP/3 → successorOf → HTTP/2 ⓘ
Chromium → supportsProtocol → HTTP/2 ⓘ
RFC 9113 → title → HTTP/2 ⓘ
HPACK → usedByProtocol → HTTP/2 ⓘ
AES-GCM → usedInProtocol → HTTP/2 ⓘ
HTTP/2 → usesHeaderCompressionSpecification → HTTP/2 self-linksurface differs ⓘ
this entity surface form: HPACK