webrtc added

Makefile

@@ -0,0 +1,15 @@
+VERSION=$(shell git describe --tags)
+LDFLAGS=-ldflags "-s -w"
+
+all: linux
+
+release: all zip
+
+clean:
+	rm -rf bin/* *.zip
+
+upx:
+	upx -9 bin/*
+
+linux:
+	CGO_ENABLE=0 GOOS=linux GOARCH=amd64 go build -o bin/server-linux-amd64 ${LDFLAGS} cmd/main.go

README.md

@@ -0,0 +1,27 @@
+# Flutter Webapp server
+### Features
+
+- WebRTC server for flutter app
+- Image to text translation
+
+### Run Binary(Only Linux)
+
+- Run
+
+```bash
+./bin/server-linux-amd64
+```
+
+Open https://0.0.0.0:8086.
+
+### Compile from Source
+
+- Install [tesseract-ocr](https://github.com/tesseract-ocr/tesseract/wiki)
+- Go is required in the system
+- Clone the repository, run `make`.
+- Run `./bin/server-{platform}-{arch}`.
+- Your server is live.
+
+## Note
+
+This example can only be used for LAN testing. If you need to use it in a production environment, you need more testing and and deploy an available turn server.

cmd/main.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"os"
+
+	"github.com/openemr/app-golang-openemr/pkg/logger"
+	"github.com/openemr/app-golang-openemr/pkg/signaler"
+	"github.com/openemr/app-golang-openemr/pkg/turn"
+	"github.com/openemr/app-golang-openemr/pkg/websocket"
+	"gopkg.in/ini.v1"
+)
+
+func main() {
+
+	cfg, err := ini.Load("./../configs/config.ini")
+	if err != nil {
+		logger.Errorf("Fail to read file: %v", err)
+		os.Exit(1)
+	}
+
+	publicIP := cfg.Section("turn").Key("public_ip").String()
+	stunPort, err := cfg.Section("turn").Key("port").Int()
+	if err != nil {
+		stunPort = 3478
+	}
+	realm := cfg.Section("turn").Key("realm").String()
+
+	turnConfig := turn.DefaultConfig()
+	turnConfig.PublicIP = publicIP
+	turnConfig.Port = stunPort
+	turnConfig.Realm = realm
+	turn := turn.NewTurnServer(turnConfig)
+
+	signaler := signaler.NewSignaler(turn)
+	wsServer := websocket.NewWebSocketServer(signaler.HandleNewWebSocket, signaler.HandleTurnServerCredentials)
+
+	sslCert := cfg.Section("general").Key("cert").String()
+	sslKey := cfg.Section("general").Key("key").String()
+	bindAddress := cfg.Section("general").Key("bind").String()
+
+	port, err := cfg.Section("general").Key("port").Int()
+	if err != nil {
+		port = 8086
+	}
+
+	htmlRoot := cfg.Section("general").Key("html_root").String()
+
+	config := websocket.DefaultConfig()
+	config.Host = bindAddress
+	config.Port = port
+	config.CertFile = sslCert
+	config.KeyFile = sslKey
+	config.HTMLRoot = htmlRoot
+
+	wsServer.Bind(config)
+}

configs/certs/cert.pem

@@ -0,0 +1,47 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

configs/certs/key.pem

@@ -0,0 +1,5 @@
+-----BEGIN PRIVATE KEY-----
+MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQg5IB7nx+zBYxQ9HNx
+wRnmQ5ySsXH/i66wdqxxIOYYqYKhRANCAATXEqrYLiHRTiy4YwMe24gdAdOm2GNp
+IWDqBNz0wYhp2Zlxq5s4T+g88iy31cKI6MLGPhHB/OdG7f2bmfZEgU0s
+-----END PRIVATE KEY-----

configs/config.ini

@@ -0,0 +1,11 @@
+[general]
+domain=demo.example.com
+cert=./../configs/certs/cert.pem
+key=./../configs/certs/key.pem
+bind=0.0.0.0
+port=8086
+
+[turn]
+public_ip=127.0.0.1
+port=19302
+realm=flutter-webrtc

go.mod

@@ -0,0 +1,15 @@
+module github.com/openemr/app-golang-openemr
+
+go 1.12
+
+require (
+	github.com/chuckpreslar/emission v0.0.0-20170206194824-a7ddd980baf9
+	github.com/gorilla/mux v1.7.3 // indirect
+	github.com/gorilla/websocket v1.4.1
+	github.com/otiai10/gosseract/v2 v2.2.4
+	github.com/otiai10/mint v1.3.2 // indirect
+	github.com/pion/turn/v2 v2.0.3
+	github.com/rs/zerolog v1.14.3
+	github.com/smartystreets/goconvey v1.6.4 // indirect
+	gopkg.in/ini.v1 v1.51.1
+)

go.sum

@@ -0,0 +1,59 @@
+github.com/chuckpreslar/emission v0.0.0-20170206194824-a7ddd980baf9 h1:xz6Nv3zcwO2Lila35hcb0QloCQsc38Al13RNEzWRpX4=
+github.com/chuckpreslar/emission v0.0.0-20170206194824-a7ddd980baf9/go.mod h1:2wSM9zJkl1UQEFZgSd68NfCgRz1VL1jzy/RjCg+ULrs=
+github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
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pkg/logger/logger.go

@@ -0,0 +1,63 @@
+package logger
+
+import (
+	"os"
+	"time"
+
+	"github.com/rs/zerolog"
+)
+
+var log zerolog.Logger
+
+// Level defines log levels.
+type Level uint8
+
+const (
+	// DebugLevel defines debug log level.
+	DebugLevel Level = iota
+	// InfoLevel defines info log level.
+	InfoLevel
+	// WarnLevel defines warn log level.
+	WarnLevel
+	// ErrorLevel defines error log level.
+	ErrorLevel
+	// FatalLevel defines fatal log level.
+	FatalLevel
+	// PanicLevel defines panic log level.
+	PanicLevel
+	// NoLevel defines an absent log level.
+	NoLevel
+	// Disabled disables the logger.
+	Disabled
+)
+
+func init() {
+	zerolog.SetGlobalLevel(zerolog.DebugLevel)
+	output := zerolog.ConsoleWriter{Out: os.Stdout, TimeFormat: time.RFC3339}
+	log = zerolog.New(output).With().Timestamp().Logger()
+	SetLevel(DebugLevel)
+}
+
+func SetLevel(l Level) {
+	zerolog.SetGlobalLevel(zerolog.Level(l))
+}
+
+func Infof(format string, v ...interface{}) {
+	log.Info().Msgf(format, v...)
+}
+
+func Debugf(format string, v ...interface{}) {
+	log.Debug().Msgf(format, v...)
+}
+
+func Warnf(format string, v ...interface{}) {
+	log.Warn().Msgf(format, v...)
+}
+
+func Errorf(format string, v ...interface{}) {
+	log.Error().Msgf(format, v...)
+}
+
+func Panicf(format string, v ...interface{}) {
+	log.Panic().Msgf(format, v...)
+}