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Diffstat (limited to 'doc/src/guide/protocols.asciidoc')
| -rw-r--r-- | doc/src/guide/protocols.asciidoc | 60 |
1 files changed, 30 insertions, 30 deletions
diff --git a/doc/src/guide/protocols.asciidoc b/doc/src/guide/protocols.asciidoc index 5e3b273..ae7705f 100644 --- a/doc/src/guide/protocols.asciidoc +++ b/doc/src/guide/protocols.asciidoc @@ -37,29 +37,29 @@ It provides the `gun:ws_upgrade/{2,3,4}` function for that purpose. A `gun_ws_upgrade` message will be sent on success; a `gun_response` message otherwise. -=== SPDY +=== HTTP/2 -SPDY is a binary protocol based on HTTP, compatible with +HTTP/2 is a binary protocol based on HTTP, compatible with the HTTP semantics, that reduces the complexity of parsing requests and responses, compresses the HTTP headers and allows the server to push multiple responses to a single request. -The SPDY interface is very similar to HTTP/1.1, so this +The HTTP/2 interface is very similar to HTTP/1.1, so this section instead focuses on the differences in the interface for the two protocols. -Because a SPDY server can push multiple responses to a +Because a HTTP/2 server can push multiple responses to a single request, Gun might send `gun_push` messages for every push received. They can be ignored safely if they are not needed. -The `gun:cancel/2` function will use the SPDY stream +The `gun:cancel/2` function will use the HTTP/2 stream cancellation mechanism which allows Gun to inform the server to stop sending a response for this particular request, saving resources. -It is not possible to upgrade a SPDY connection to Websocket +It is not possible to upgrade an HTTP/2 connection to Websocket due to protocol limitations. === Websocket @@ -87,33 +87,33 @@ current protocol. .Supported operations per protocol [cols="<,3*^",options="header"] |=== -| Operation | HTTP/1.1 | SPDY | Websocket -| delete | yes | yes | no -| get | yes | yes | no -| head | yes | yes | no -| options | yes | yes | no -| patch | yes | yes | no -| post | yes | yes | no -| put | yes | yes | no -| request | yes | yes | no -| data | yes | yes | no -| await | yes | yes | no -| await_body | yes | yes | no -| flush | yes | yes | no -| cancel | yes | yes | no -| ws_upgrade | yes | no | no -| ws_send | no | no | yes +| Operation | HTTP/1.1 | HTTP/2 | Websocket +| delete | yes | yes | no +| get | yes | yes | no +| head | yes | yes | no +| options | yes | yes | no +| patch | yes | yes | no +| post | yes | yes | no +| put | yes | yes | no +| request | yes | yes | no +| data | yes | yes | no +| await | yes | yes | no +| await_body | yes | yes | no +| flush | yes | yes | no +| cancel | yes | yes | no +| ws_upgrade | yes | no | no +| ws_send | no | no | yes |=== .Messages sent per protocol [cols="<,3*^",options="header"] |=== -| Message | HTTP/1.1 | SPDY | Websocket -| gun_push | no | yes | no -| gun_response | yes | yes | no -| gun_data | yes | yes | no -| gun_error (StreamRef) | yes | yes | no -| gun_error | yes | yes | yes -| gun_ws_upgrade | yes | no | no -| gun_ws | no | no | yes +| Message | HTTP/1.1 | HTTP/2 | Websocket +| gun_push | no | yes | no +| gun_response | yes | yes | no +| gun_data | yes | yes | no +| gun_error (StreamRef) | yes | yes | no +| gun_error | yes | yes | yes +| gun_ws_upgrade | yes | no | no +| gun_ws | no | no | yes |=== |