Add permessage-deflate support

.gitignore

@@ -1,3 +1,5 @@
 target
 Cargo.lock
 .vscode
+autobahn/client/
+autobahn/server/

CHANGELOG.md

@@ -1,3 +1,7 @@
+# Unreleased (0.28.0)
+* Reduce `Error` size 136 -> **32** by boxing internals of `Error::Http`, `Error::WriteBufferFull`,
+  `ProtocolError::InvalidHeader`, `TlsError::Native`, `TlsError::Rustls`.
+
 # 0.27.0
 - Fix large message read performance by enforcing max `read_buffer_size` read chunks.
 - Make `Hash` implementation consistent for `Utf8Bytes` payloads.

Cargo.toml

@@ -19,17 +19,20 @@ all-features = true
 
 [features]
 default = ["handshake"]
-handshake = ["data-encoding", "http", "httparse", "sha1"]
+handshake = ["data-encoding", "headers", "httparse", "sha1"]
+headers = ["http", "dep:headers"]
 url = ["dep:url"]
 native-tls = ["native-tls-crate"]
 native-tls-vendored = ["native-tls", "native-tls-crate/vendored"]
 rustls-tls-native-roots = ["__rustls-tls", "rustls-native-certs"]
 rustls-tls-webpki-roots = ["__rustls-tls", "webpki-roots"]
 __rustls-tls = ["rustls", "rustls-pki-types"]
+deflate = ["headers", "flate2"]
 
 [dependencies]
 data-encoding = { version = "2", optional = true }
 bytes = "1.9.0"
+headers = { version = "0.4.0", optional = true }
 http = { version = "1.0", optional = true }
 httparse = { version = "1.3.4", optional = true }
 log = "0.4.8"
@@ -39,6 +42,16 @@ thiserror = "2.0.7"
 url = { version = "2.1.0", optional = true }
 utf-8 = "0.7.5"
 
+[dependencies.flate2]
+optional = true
+version = "1.0.27"
+default-features = false
+# We need some zlib-compatible backend from flate2 to support setting the
+# context window size. Enabling the "zlib" feature is enough, and, per the
+# flate2 documentation, if other crates in the build graph enable the "zlib-ng"
+# or "zlib-ng-compat" features, those will take precedence.
+features = ["zlib"]
+
 [dependencies.native-tls-crate]
 optional = true
 package = "native-tls"
@@ -63,6 +76,8 @@ optional = true
 version = "0.26"
 
 [dev-dependencies]
+http = "1.0"
+httparse = "1.3.4"
 criterion = "0.6"
 env_logger = "0.11"
 input_buffer = "0.5.0"
@@ -99,16 +114,16 @@ required-features = ["handshake"]
 
 [[example]]
 name = "autobahn-client"
-required-features = ["handshake"]
+required-features = ["handshake", "deflate"]
 
 [[example]]
 name = "autobahn-server"
-required-features = ["handshake"]
+required-features = ["handshake", "deflate"]
 
 [[example]]
 name = "callback-error"
 required-features = ["handshake"]
 
 [[example]]
 name = "srv_accept_unmasked_frames"
-required-features = ["handshake"]
+required-features = ["handshake"]

README.md

@@ -72,8 +72,6 @@ Choose the one that is appropriate for your needs.
 By default **no TLS feature is activated**, so make sure you use one of the TLS features,
 otherwise you won't be able to communicate with the TLS endpoints.
 
-There is no support for permessage-deflate at the moment, but the PRs are welcome :wink:
-
 Testing
 -------