From 978f1e4c6e63f85d48d9ab1c9673316436c89a21 Mon Sep 17 00:00:00 2001 From: Randy Reddig Date: Fri, 9 Jul 2021 09:22:18 -0700 Subject: [PATCH] initial commit --- .editorconfig | 10 ++ .gitignore | 28 +++ .prettierrc.yaml | 6 + .swift-version | 1 + .swiftformat | 6 + .vscode/extensions.json | 19 +++ .vscode/settings.json | 107 ++++++++++++ Frameworks/.gitkeep | 0 Makefile | 20 +++ Package.swift | 35 ++++ README.md | 9 + Sources/EchoGo/echo.go | 13 ++ Sources/EchoKit/EchoKit.swift | 1 + Tests/EchoKitTests/EchoTest.swift | 48 ++++++ cmd/client/client.go | 21 +++ cmd/server/server.go | 17 ++ go.mod | 14 ++ go.sum | 271 ++++++++++++++++++++++++++++++ internal/echo/echo.go | 140 +++++++++++++++ internal/tools/tools.go | 11 ++ 20 files changed, 777 insertions(+) create mode 100644 .editorconfig create mode 100644 .gitignore create mode 100644 .prettierrc.yaml create mode 100644 .swift-version create mode 100644 .swiftformat create mode 100644 .vscode/extensions.json create mode 100644 .vscode/settings.json create mode 100644 Frameworks/.gitkeep create mode 100644 Makefile create mode 100644 Package.swift create mode 100644 README.md create mode 100644 Sources/EchoGo/echo.go create mode 100644 Sources/EchoKit/EchoKit.swift create mode 100644 Tests/EchoKitTests/EchoTest.swift create mode 100644 cmd/client/client.go create mode 100644 cmd/server/server.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 internal/echo/echo.go create mode 100644 internal/tools/tools.go diff --git a/.editorconfig b/.editorconfig new file mode 100644 index 0000000..92bea26 --- /dev/null +++ b/.editorconfig @@ -0,0 +1,10 @@ +root = true + +[*] +charset = utf-8 +indent_style = tab +tab_width = 8 +max_line_length = 2048 +end_of_line = lf +trim_trailing_whitespace = true +insert_final_newline = true diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b28f88e --- /dev/null +++ b/.gitignore @@ -0,0 +1,28 @@ +# macOS +.DS_Store +!**/.metadata_never_index + +# Xcode/Swift +!default.mode1v3 +!default.mode2v3 +!default.pbxuser +!default.perspectivev3 +.build/ +.swiftpm +*.app +*.dSYM.zip +*.hmap +*.ipa +*.mode1v3 +*.mode2v3 +*.moved-aside +*.pbxuser +*.perspectivev3 +*.xccheckout +*.xcframework +*.xcuserstate +DerivedData +xcuserdata + +# Vendor dirs +**/vendor/ diff --git a/.prettierrc.yaml b/.prettierrc.yaml new file mode 100644 index 0000000..a2a994e --- /dev/null +++ b/.prettierrc.yaml @@ -0,0 +1,6 @@ +useTabs: true +tabWidth: 8 +semi: false +singleQuote: true +printWidth: 80 +trailingComma: "es5" diff --git a/.swift-version b/.swift-version new file mode 100644 index 0000000..d346e2a --- /dev/null +++ b/.swift-version @@ -0,0 +1 @@ +5.3 diff --git a/.swiftformat b/.swiftformat new file mode 100644 index 0000000..f6f1047 --- /dev/null +++ b/.swiftformat @@ -0,0 +1,6 @@ +--indent tab +--exclude **/.build +--exclude **/.git +--exclude **/.github +--exclude **/.swiftpm +--exclude **/.vscode diff --git a/.vscode/extensions.json b/.vscode/extensions.json new file mode 100644 index 0000000..7399f72 --- /dev/null +++ b/.vscode/extensions.json @@ -0,0 +1,19 @@ +{ + // List of extensions which should be recommended for users of this workspace. + // See http://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations. + // Extension identifier format: ${publisher}.${name}. Example: vscode.csharp + "recommendations": [ + "davidanson.vscode-markdownlint", + "eamodio.gitlens", + "foxundermoon.shell-format", + "golang.go", + "mariomatheu.syntax-project-pbxproj", + "redhat.vscode-yaml", + "stkb.rewrap", + "vknabel.vscode-swiftformat", + "xaver.clang-format" + ], + + // List of extensions recommended by VS Code that should not be recommended for users of this workspace. + "unwantedRecommendations": [] +} diff --git a/.vscode/settings.json b/.vscode/settings.json new file mode 100644 index 0000000..4482abb --- /dev/null +++ b/.vscode/settings.json @@ -0,0 +1,107 @@ +{ + // Editor + "editor.codeActionsOnSave": { + "source.fixAll.eslint": true + }, + "editor.detectIndentation": false, + "editor.formatOnSave": true, + "editor.insertSpaces": false, + "editor.tabSize": 8, + "files.eol": "\n", + + // Files + "files.exclude": { + "**/.build": true, + "**/.git": true, + "**/build": true, + "**/vendor": true + }, + "files.associations": {}, + "files.insertFinalNewline": true, + "files.watcherExclude": { + "**/.git/objects/**": true, + "**/.git/subtree-cache/**": true + }, + "files.trimTrailingWhitespace": true, + + // Go + "[go]": { + "editor.codeActionsOnSave": { + "source.organizeImports": true + } + }, + "[go.mod]": { + "editor.codeActionsOnSave": { + "source.fixAll": true, + "source.organizeImports": true + } + }, + "go.useLanguageServer": true, + "gopls": { + "usePlaceholders": true + }, + + // HTML + "html.format.contentUnformatted": "pre,code,textarea,script", + "html.format.unformatted": "pre,code,textarea,script,wbr", + "html.format.endWithNewline": true, + + // JSON + "[json]": { + "editor.defaultFormatter": "esbenp.prettier-vscode" + }, + "[jsonc]": { + "editor.defaultFormatter": "esbenp.prettier-vscode" + }, + + // Make + "[makefile]": { + "editor.tabSize": 8 + }, + + // Markdown + "[markdown]": { + "editor.rulers": [80], + "editor.codeActionsOnSave": { + "source.fixAll.markdownlint": true + } + }, + "markdown.preview.breaks": true, + "markdownlint.config": { + "default": true, + "MD022": false, + "MD024": false, + "MD032": false + }, + + // Property Lists + "[plist]": { + "editor.formatOnSave": true, + "editor.tabSize": 8 + }, + + // Shell + "[shellscript]": { + "editor.defaultFormatter": "foxundermoon.shell-format" + }, + + // Swift + "[swift]": { + "editor.detectIndentation": false, + "editor.insertSpaces": false, + "editor.tabSize": 8 + }, + + // YAML + "[yaml]": { + "editor.autoIndent": "keep", + "editor.detectIndentation": true, + "editor.insertSpaces": true, + "editor.tabSize": 2, + "editor.quickSuggestions": { + "other": true, + "comments": false, + "strings": true + } + } +} diff --git a/Frameworks/.gitkeep b/Frameworks/.gitkeep new file mode 100644 index 0000000..e69de29 diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..7829887 --- /dev/null +++ b/Makefile @@ -0,0 +1,20 @@ +.DEFAULT: build + +build: tools Frameworks $(wildcard Package.*) $(wildcard Sources/*/*) + swift build --jobs 10 -c release + +.PHONY: tools +tools: + go generate -tags=tools ./internal/tools + +.PHONY: Frameworks +Frameworks: Frameworks/EchoGo.xcframework + +Frameworks/%.xcframework: Makefile $(wildcard Sources/*/*.go) + gomobile init + gomobile bind -target ios -o $@ ./Sources/$* + touch $@ + +test: build + go test ./... + swift test diff --git a/Package.swift b/Package.swift new file mode 100644 index 0000000..68f97d3 --- /dev/null +++ b/Package.swift @@ -0,0 +1,35 @@ +// swift-tools-version:5.3 +import PackageDescription + +let package = Package( + name: "EchoKit", + platforms: [ + .macOS(.v11), + .iOS(.v13), + ], + products: [ + // Products define the executables and libraries a package produces, and make them visible to other packages. + .library( + name: "EchoKit", + targets: ["EchoGo"] + ), + ], + dependencies: [ + // Dependencies declare other packages that this package depends on. + ], + targets: [ + // Targets are the basic building blocks of a package. A target can define a module or a test suite. + // Targets can depend on other targets in this package, and on products in packages this package depends on. + .target( + name: "EchoKit" + ), + .binaryTarget( + name: "EchoGo", + path: "Frameworks/EchoGo.xcframework" + ), + .testTarget( + name: "EchoKitTests", + dependencies: ["EchoKit", "EchoGo"] + ), + ] +) diff --git a/README.md b/README.md new file mode 100644 index 0000000..eddd420 --- /dev/null +++ b/README.md @@ -0,0 +1,9 @@ +# QUIC + Go + gomobile + +Example Go package built into an XCFramework suitable for inclusion in an iOS or macOS app via Swift Package Manager. + +Depends on . + +## Author + +© Alta Software, LLC diff --git a/Sources/EchoGo/echo.go b/Sources/EchoGo/echo.go new file mode 100644 index 0000000..b8f902c --- /dev/null +++ b/Sources/EchoGo/echo.go @@ -0,0 +1,13 @@ +package Go + +import ( + "github.com/alta/quic-go-mobile-example/internal/echo" +) + +// Echo sends msg to addr via a QUIC datagram. +// It returns the value of the first datagram received from the remote host or an error. +// For testing purposes, this function explicitly skips TLS cert verification. +// Do not use this in production. +func Echo(addr, msg string) (string, error) { + return echo.RoundTrip(addr, msg) +} diff --git a/Sources/EchoKit/EchoKit.swift b/Sources/EchoKit/EchoKit.swift new file mode 100644 index 0000000..5033507 --- /dev/null +++ b/Sources/EchoKit/EchoKit.swift @@ -0,0 +1 @@ +// Stub file so SPM doesn’t complain diff --git a/Tests/EchoKitTests/EchoTest.swift b/Tests/EchoKitTests/EchoTest.swift new file mode 100644 index 0000000..6922e25 --- /dev/null +++ b/Tests/EchoKitTests/EchoTest.swift @@ -0,0 +1,48 @@ +import XCTest + +@testable import EchoGo + +class EchoTests: XCTestCase { + static let host = "localhost" + static let port = Int.random(in: 1025 ..< Int(Int16.max)) + static let server = Process() + + override class func setUp() { + super.setUp() + + let directory = URL(fileURLWithPath: #filePath) + .deletingLastPathComponent() // EchoKitTests + .deletingLastPathComponent() // Tests + .deletingLastPathComponent() // Repo root + + server.currentDirectoryURL = directory + server.executableURL = URL(fileURLWithPath: "/bin/sh") + server.arguments = ["-c", "go run ./cmd/server -a \(host):\(port)"] + server.environment = ProcessInfo.processInfo.environment + + do { + try server.run() + } catch { + XCTFail("Failed to start test QUIC server.") + } + + // Give the server a chance to start up + sleep(4) + } + + override class func tearDown() { + server.terminate() + super.tearDown() + } + + func testEcho() throws { + let addr = "\(Self.host):\(Self.port)" + let message = "Hello QUIC!" + var error: NSErrorPointer = nil + + let response = GoEcho(addr, message, error) + + XCTAssertEqual(response, message) + XCTAssertEqual(error, nil) + } +} diff --git a/cmd/client/client.go b/cmd/client/client.go new file mode 100644 index 0000000..3c5d384 --- /dev/null +++ b/cmd/client/client.go @@ -0,0 +1,21 @@ +package main + +import ( + "flag" + "log" + + "github.com/alta/quic-go-mobile-example/internal/echo" +) + +func main() { + addr := flag.String("a", "localhost:4242", "address in host:port format") + flag.Parse() + msg := flag.Arg(0) + if msg == "" { + msg = "hello" + } + _, err := echo.RoundTrip(*addr, msg) + if err != nil { + log.Fatal(err) + } +} diff --git a/cmd/server/server.go b/cmd/server/server.go new file mode 100644 index 0000000..c4bd5c6 --- /dev/null +++ b/cmd/server/server.go @@ -0,0 +1,17 @@ +package main + +import ( + "flag" + "log" + + "github.com/alta/quic-go-mobile-example/internal/echo" +) + +func main() { + addr := flag.String("a", "localhost:4242", "address in host:port format") + flag.Parse() + err := echo.Serve(*addr) + if err != nil { + log.Fatal(err) + } +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..1d5e597 --- /dev/null +++ b/go.mod @@ -0,0 +1,14 @@ +module github.com/alta/quic-go-mobile-example + +go 1.16 + +require ( + github.com/alta/insecure v0.0.0-20210629202216-eec10269b9f1 + github.com/lucas-clemente/quic-go v0.21.1 + golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e // indirect + golang.org/x/mobile v0.0.0-20210220033013-bdb1ca9a1e08 + golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect + golang.org/x/text v0.3.5 // indirect +) + +replace golang.org/x/mobile => github.com/ydnar/gomobile v0.0.0-20210709044546-50f941d1f5dd diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..d56a451 --- /dev/null +++ b/go.sum @@ -0,0 +1,271 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.31.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.37.0/go.mod h1:TS1dMSSfndXH133OKGwekG838Om/cQT0BUHV3HcBgoo= +dmitri.shuralyov.com/app/changes v0.0.0-20180602232624-0a106ad413e3/go.mod 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h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0= diff --git a/internal/echo/echo.go b/internal/echo/echo.go new file mode 100644 index 0000000..72c28d8 --- /dev/null +++ b/internal/echo/echo.go @@ -0,0 +1,140 @@ +package echo + +import ( + "context" + "crypto/tls" + "crypto/x509" + "fmt" + "io" + "log" + "net" + "os" + "path/filepath" + + "github.com/alta/insecure" + "github.com/lucas-clemente/quic-go" + "github.com/lucas-clemente/quic-go/logging" + "github.com/lucas-clemente/quic-go/qlog" +) + +const nextProtoEcho = "echo" + +// Serve implements a rudimentary QUIC datagram echo server. +// It listens on addr via QUIC, accepts and echoes back datagrams received. +func Serve(addr string) error { + cert, pool, err := localCertPool(addr) + if err != nil { + return err + } + + tlsConfig := &tls.Config{ + Certificates: []tls.Certificate{cert}, + RootCAs: pool, + NextProtos: []string{nextProtoEcho}, + } + + quicConfig := &quic.Config{ + EnableDatagrams: true, + } + + qlogDir := os.Getenv("QUIC_LOG_DIRECTORY") + if qlogDir != "" { + quicConfig.Tracer = qlog.NewTracer(func(_ logging.Perspective, connID []byte) io.WriteCloser { + fn := filepath.Join(qlogDir, fmt.Sprintf("server-%x.qlog", connID)) + f, err := os.Create(fn) + if err != nil { + log.Fatal(err) + } + log.Printf("server: Created qlog file: %s", fn) + return f + }) + } + + listener, err := quic.ListenAddr(addr, tlsConfig, quicConfig) + if err != nil { + return err + } + + log.Printf("server: Listening at: %s", addr) + + for { + sess, err := listener.Accept(context.Background()) + if err != nil { + return err + } + go func(sess quic.Session) { + log.Printf("QUIC session started: %s", sess.RemoteAddr().String()) + for { + buf, err := sess.ReceiveMessage() + if err != nil { + log.Printf("server: Error: ReceiveMessage: %v\n", err) + break + } + log.Printf("server: ReceiveMessage: %s\n", string(buf)) + err = sess.SendMessage(buf) + if err != nil { + log.Printf("server: Error: SendMessage: %v", err) + break + } + log.Printf("server: SendMessage: %s\n", string(buf)) + } + }(sess) + } +} + +// RoundTrip sends msg to addr via a QUIC datagram. +// It returns the value of the first datagram received from the remote host or an error. +// For testing purposes, this function explicitly skips TLS cert verification. +// Do not use this in production. +func RoundTrip(addr, msg string) (string, error) { + tlsConfig := &tls.Config{ + NextProtos: []string{nextProtoEcho}, + InsecureSkipVerify: true, + } + + quicConfig := &quic.Config{ + EnableDatagrams: true, + } + + sess, err := quic.DialAddr(addr, tlsConfig, quicConfig) + if err != nil { + return "", err + } + + err = sess.SendMessage([]byte(msg)) + if err != nil { + return "", err + } + log.Printf("client: SendMessage: %v\n", msg) + + buf, err := sess.ReceiveMessage() + if err != nil { + return "", err + } + reply := string(buf) + log.Printf("client: ReceiveMessage: %v\n", reply) + return reply, nil +} + +func localCertPool(addr string) (tls.Certificate, *x509.CertPool, error) { + // Start with defaults (localhost, etc.). + sans := insecure.LocalSANs() + + hostname, _ := os.Hostname() + if hostname != "" { + sans = append(sans, hostname) + } + + host, _, _ := net.SplitHostPort(addr) + if host != "" { + sans = append(sans, host) + } + + cert, err := insecure.Cert(sans...) + if err != nil { + return cert, nil, err + } + + pool, err := insecure.Pool(cert) + return cert, pool, err +} diff --git a/internal/tools/tools.go b/internal/tools/tools.go new file mode 100644 index 0000000..affbe59 --- /dev/null +++ b/internal/tools/tools.go @@ -0,0 +1,11 @@ +// +build tools + +package tools + +import ( + // Blank imports for tool binaries + _ "golang.org/x/mobile/cmd/gomobile" +) + +//go:generate go install golang.org/x/mobile/cmd/gomobile +//go:generate gomobile init