Raise minimum supported Swift version from 5.4 to 5.5

Package@swift-5.5.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.4
+// swift-tools-version:5.5
 //===----------------------------------------------------------------------===//
 //
 // This source file is part of the AsyncHTTPClient open source project

README.md

@@ -152,7 +152,7 @@ httpClient.execute(request: request, deadline: .now() + .milliseconds(1))
 ```
 
 ### Streaming
-When dealing with larger amount of data, it's critical to stream the response body instead of aggregating in-memory. 
+When dealing with larger amount of data, it's critical to stream the response body instead of aggregating in-memory.
 The following example demonstrates how to count the number of bytes in a streaming response body:
 
 #### Using Swift Concurrency
@@ -172,7 +172,7 @@ do {
  for try await buffer in response.body {
  // for this example, we are just interested in the size of the fragment
  receivedBytes += buffer.readableBytes
- 
+
  if let expectedBytes = expectedBytes {
  // if the body size is known, we calculate a progress indicator
  let progress = Double(receivedBytes) / Double(expectedBytes)
@@ -181,9 +181,9 @@ do {
  }
  print("did receive \(receivedBytes) bytes")
 } catch {
- print("request failed:", error) 
+ print("request failed:", error)
 }
-// it is important to shutdown the httpClient after all requests are done, even if one failed 
+// it is important to shutdown the httpClient after all requests are done, even if one failed
 try await httpClient.shutdown()
 ```
 
@@ -211,17 +211,17 @@ class CountingDelegate: HTTPClientResponseDelegate {
  }
 
  func didReceiveHead(
- task: HTTPClient.Task<Response>, 
+ task: HTTPClient.Task<Response>,
  _ head: HTTPResponseHead
  ) -> EventLoopFuture<Void> {
- // this is executed when we receive HTTP response head part of the request 
- // (it contains response code and headers), called once in case backpressure 
+ // this is executed when we receive HTTP response head part of the request
+ // (it contains response code and headers), called once in case backpressure
  // is needed, all reads will be paused until returned future is resolved
  return task.eventLoop.makeSucceededFuture(())
  }
 
  func didReceiveBodyPart(
- task: HTTPClient.Task<Response>, 
+ task: HTTPClient.Task<Response>,
  _ buffer: ByteBuffer
  ) -> EventLoopFuture<Void> {
  // this is executed when we receive parts of the response body, could be called zero or more times
@@ -283,8 +283,8 @@ Connecting to servers bound to socket paths is easy:
 ```swift
 let httpClient = HTTPClient(eventLoopGroupProvider: .createNew)
 httpClient.execute(
- .GET, 
- socketPath: "/tmp/myServer.socket", 
+ .GET,
+ socketPath: "/tmp/myServer.socket",
  urlPath: "/path/to/resource"
 ).whenComplete (...)
 ```
@@ -293,21 +293,21 @@ Connecting over TLS to a unix domain socket path is possible as well:
 ```swift
 let httpClient = HTTPClient(eventLoopGroupProvider: .createNew)
 httpClient.execute(
- .POST, 
- secureSocketPath: "/tmp/myServer.socket", 
- urlPath: "/path/to/resource", 
+ .POST,
+ secureSocketPath: "/tmp/myServer.socket",
+ urlPath: "/path/to/resource",
  body: .string("hello")
 ).whenComplete (...)
 ```
 
 Direct URLs can easily be constructed to be executed in other scenarios:
 ```swift
 let socketPathBasedURL = URL(
- httpURLWithSocketPath: "/tmp/myServer.socket", 
+ httpURLWithSocketPath: "/tmp/myServer.socket",
  uri: "/path/to/resource"
 )
 let secureSocketPathBasedURL = URL(
- httpsURLWithSocketPath: "/tmp/myServer.socket", 
+ httpsURLWithSocketPath: "/tmp/myServer.socket",
  uri: "/path/to/resource"
 )
 ```
@@ -326,3 +326,14 @@ let client = HTTPClient(
 ## Security
 
 Please have a look at [SECURITY.md](SECURITY.md) for AsyncHTTPClient's security process.
+
+## Supported Versions
+
+The most recent versions of AsyncHTTPClient support Swift 5.5 and newer. The minimum Swift version supported by AsyncHTTPClient releases are detailed below:
+
+AsyncHTTPClient | Minimum Swift Version
+--------------------|----------------------
+`1.0.0 ..< 1.5.0` | 5.0
+`1.5.0 ..< 1.10.0` | 5.2
+`1.10.0 ..< 1.13.0` | 5.4
+`1.13.0 ...` | 5.5

docker/Dockerfile

@@ -1,5 +1,5 @@
-ARG swift_version=5.4
-ARG ubuntu_version=bionic
+ARG swift_version=5.7
+ARG ubuntu_version=jammy
 ARG base_image=swift:$swift_version-$ubuntu_version
 FROM $base_image
 # needed to do again after FROM due to docker limitation

docker/docker-compose.2204.57.yaml

@@ -0,0 +1,17 @@
+version: "3"
+
+services:
+
+ runtime-setup:
+ image: async-http-client:22.04-5.7
+ build:
+ args:
+ base_image: "swift:5.7-jammy"
+
+ test:
+ image: async-http-client:22.04-5.7
+ environment: []
+ #- SANITIZER_ARG=--sanitize=thread
+
+ shell:
+ image: async-http-client:22.04-5.7