split components

go.mod

@@ -5,8 +5,10 @@ go 1.19
 require (
 	github.com/asticode/go-astisrt v0.3.0
 	github.com/asticode/go-astits v1.11.0
+	github.com/kelseyhightower/envconfig v1.4.0
 	github.com/pion/webrtc/v3 v3.1.47
 	github.com/szatmary/gocaption v0.0.0-20220607192049-fdd59655f0c3
+	go.uber.org/fx v1.20.1
 )
 
 require (
@@ -28,6 +30,10 @@ require (
 	github.com/pion/transport v0.13.1 // indirect
 	github.com/pion/turn/v2 v2.0.8 // indirect
 	github.com/pion/udp v0.1.1 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/dig v1.17.0 // indirect
+	go.uber.org/multierr v1.6.0 // indirect
+	go.uber.org/zap v1.23.0 // indirect
 	golang.org/x/crypto v0.2.0 // indirect
 	golang.org/x/net v0.2.0 // indirect
 	golang.org/x/sys v0.2.0 // indirect

go.sum

@@ -1,13 +1,11 @@
-github.com/asticode/go-astikit v0.30.0 h1:DkBkRQRIxYcknlaU7W7ksNfn4gMFsB0tqMJflxkRsZA=
 github.com/asticode/go-astikit v0.30.0/go.mod h1:h4ly7idim1tNhaVkdVBeXQZEE3L0xblP7fCWbgwipF0=
 github.com/asticode/go-astikit v0.36.0 h1:WHSY88YT76D/XRbdp0lMLwfjyUGw8dygnbKKtbGNIG8=
 github.com/asticode/go-astikit v0.36.0/go.mod h1:h4ly7idim1tNhaVkdVBeXQZEE3L0xblP7fCWbgwipF0=
-github.com/asticode/go-astisrt v0.2.0 h1:pfaSfW2BfW2O2NFtzlktzIf5gHc4Pue1q1scTuj7uhc=
-github.com/asticode/go-astisrt v0.2.0/go.mod h1:tP5Dx+MXyaICUeF0gz4nwyav3RDI609e0en3QQkrxKE=
 github.com/asticode/go-astisrt v0.3.0 h1:LpvqOc17qfMr2suLZPzMs9wYLozxXYu/PE9CA1tH88c=
 github.com/asticode/go-astisrt v0.3.0/go.mod h1:tP5Dx+MXyaICUeF0gz4nwyav3RDI609e0en3QQkrxKE=
 github.com/asticode/go-astits v1.11.0 h1:GTHUXht0ZXAJXsVbsLIcyfHr1Bchi4QQwMARw2ZWAng=
 github.com/asticode/go-astits v1.11.0/go.mod h1:QSHmknZ51pf6KJdHKZHJTLlMegIrhega3LPWz3ND/iI=
+github.com/benbjohnson/clock v1.3.0 h1:ip6w0uFQkncKQ979AypyG0ER7mqUSBdKLOgAle/AT8A=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -30,6 +28,8 @@ github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/kelseyhightower/envconfig v1.4.0 h1:Im6hONhd3pLkfDFsbRgu68RDNkGF1r3dvMUtDTo2cv8=
+github.com/kelseyhightower/envconfig v1.4.0/go.mod h1:cccZRl6mQpaq41TPp5QxidR+Sa3axMbJDNb//FQX6Gg=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
@@ -48,7 +48,6 @@ github.com/pion/dtls/v2 v2.1.5 h1:jlh2vtIyUBShchoTDqpCCqiYCyRFJ/lvf/gQ8TALs+c=
 github.com/pion/dtls/v2 v2.1.5/go.mod h1:BqCE7xPZbPSubGasRoDFJeTsyJtdD1FanJYL0JGheqY=
 github.com/pion/ice/v2 v2.2.11 h1:wiAy7TSrVZ4KdyjC0CcNTkwltz9ywetbe4wbHLKUbIg=
 github.com/pion/ice/v2 v2.2.11/go.mod h1:NqUDUao6SjSs1+4jrqpexDmFlptlVhGxQjcymXLaVvE=
-github.com/pion/interceptor v0.1.11 h1:00U6OlqxA3FFB50HSg25J/8cWi7P6FbSzw4eFn24Bvs=
 github.com/pion/interceptor v0.1.11/go.mod h1:tbtKjZY14awXd7Bq0mmWvgtHB5MDaRN7HV3OZ/uy7s8=
 github.com/pion/interceptor v0.1.12 h1:CslaNriCFUItiXS5o+hh5lpL0t0ytQkFnUcbbCs2Zq8=
 github.com/pion/interceptor v0.1.12/go.mod h1:bDtgAD9dRkBZpWHGKaoKb42FhDHTG2rX8Ii9LRALLVA=
@@ -64,7 +63,6 @@ github.com/pion/rtcp v1.2.10/go.mod h1:ztfEwXZNLGyF1oQDttz/ZKIBaeeg/oWbRYqzBM9TL
 github.com/pion/rtp v1.7.13 h1:qcHwlmtiI50t1XivvoawdCGTP4Uiypzfrsap+bijcoA=
 github.com/pion/rtp v1.7.13/go.mod h1:bDb5n+BFZxXx0Ea7E5qe+klMuqiBrP+w8XSjiWtCUko=
 github.com/pion/sctp v1.8.0/go.mod h1:xFe9cLMZ5Vj6eOzpyiKjT9SwGM4KpK/8Jbw5//jc+0s=
-github.com/pion/sctp v1.8.2 h1:yBBCIrUMJ4yFICL3RIvR4eh/H2BTTvlligmSTy+3kiA=
 github.com/pion/sctp v1.8.2/go.mod h1:xFe9cLMZ5Vj6eOzpyiKjT9SwGM4KpK/8Jbw5//jc+0s=
 github.com/pion/sctp v1.8.3 h1:LWcciN2ptLkw9Ugp/Ks2E76fiWy7yk3Wm79D6oFbFNo=
 github.com/pion/sctp v1.8.3/go.mod h1:OHbDjdk7kg+L+7TJim9q/qGVefdEJohuA2SZyihccgI=
@@ -85,11 +83,13 @@ github.com/pion/udp v0.1.1 h1:8UAPvyqmsxK8oOjloDk4wUt63TzFe9WEJkg5lChlj7o=
 github.com/pion/udp v0.1.1/go.mod h1:6AFo+CMdKQm7UiA0eUPA8/eVCTx8jBIITLZHc9DWX5M=
 github.com/pion/webrtc/v3 v3.1.47 h1:2dFEKRI1rzFvehXDq43hK9OGGyTGJSusUi3j6QKHC5s=
 github.com/pion/webrtc/v3 v3.1.47/go.mod h1:8U39MYZCLVV4sIBn01htASVNkWQN2zDa/rx5xisEXWs=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/profile v1.4.0/go.mod h1:NWz/XGvpEW1FyYQ7fCx4dqYBLlfTcE+A9FLAkNKqjFE=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sclevine/agouti v3.0.0+incompatible/go.mod h1:b4WX9W9L1sfQKXeJf1mUTLZKJ48R1S7H23Ji7oFO5Bw=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -99,11 +99,21 @@ github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PK
 github.com/szatmary/gocaption v0.0.0-20220607192049-fdd59655f0c3 h1:j8SVIV6YZreqjOPGjxM48tB4XgS8oUZdgy0cyN7YrBg=
 github.com/szatmary/gocaption v0.0.0-20220607192049-fdd59655f0c3/go.mod h1:l9r7RYKHGLuHbXpKJhJgASvi8xT+Uqxnz9B26uVU73c=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
+go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+go.uber.org/dig v1.17.0 h1:5Chju+tUvcC+N7N6EV08BJz41UZuO3BmHcN4A287ZLI=
+go.uber.org/dig v1.17.0/go.mod h1:rTxpf7l5I0eBTlE6/9RL+lDybC7WFwY2QH55ZSjy1mU=
+go.uber.org/fx v1.20.1 h1:zVwVQGS8zYvhh9Xxcu4w1M6ESyeMzebzj2NbSayZ4Mk=
+go.uber.org/fx v1.20.1/go.mod h1:iSYNbHf2y55acNCwCXKx7LbWb5WG1Bnue5RDXz1OREg=
+go.uber.org/goleak v1.1.11 h1:wy28qYRKZgnJTxGxvye5/wgWr1EKjmUDGYox5mGlRlI=
+go.uber.org/multierr v1.6.0 h1:y6IPFStTAIT5Ytl7/XYmHvzXQ7S3g/IeZW9hyZ5thw4=
+go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
+go.uber.org/zap v1.23.0 h1:OjGQ5KQDEUawVHxNwQgPpiypGHOxo2mNZsOqTak4fFY=
+go.uber.org/zap v1.23.0/go.mod h1:D+nX8jyLsMHMYrln8A0rJjFt/T/9/bGgIhAqxv5URuY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20220427172511-eb4f295cb31f/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/crypto v0.0.0-20221010152910-d6f0a8c073c2 h1:x8vtB3zMecnlqZIwJNUUpwYKYSqCz5jXbiyv0ZJJZeI=
 golang.org/x/crypto v0.0.0-20221010152910-d6f0a8c073c2/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.2.0 h1:BRXPfhNivWL5Yq0BGQ39a2sW6t44aODpfxkWjYdzewE=
 golang.org/x/crypto v0.2.0/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
@@ -121,7 +131,6 @@ golang.org/x/net v0.0.0-20211201190559-0a0e4e1bb54c/go.mod h1:9nx3DQGgdP8bBQD5qx
 golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
 golang.org/x/net v0.0.0-20220531201128-c960675eff93/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.0.0-20221002022538-bcab6841153b/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
-golang.org/x/net v0.0.0-20221004154528-8021a29435af h1:wv66FM3rLZGPdxpYL+ApnDe2HzHcTFta3z5nsc13wI4=
 golang.org/x/net v0.0.0-20221004154528-8021a29435af/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
 golang.org/x/net v0.2.0 h1:sZfSu1wtKLGlWI4ZZayP0ck9Y73K1ynO6gqzTdBVdPU=
 golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
@@ -145,7 +154,6 @@ golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220608164250-635b8c9b7f68/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220622161953-175b2fd9d664/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20221010170243-090e33056c14 h1:k5II8e6QD8mITdi+okbbmR/cIyEbeXLBhy5Ha4nevyc=
 golang.org/x/sys v0.0.0-20221010170243-090e33056c14/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.2.0 h1:ljd4t30dBnAvMZaQCevtY0xLLD0A+bRZXbgLMLU1F/A=
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

internal/controller/srt/controller.go

@@ -0,0 +1,49 @@
+package srt
+
+import (
+	"log"
+
+	astisrt "github.com/asticode/go-astisrt/pkg"
+	"github.com/flavioribeiro/donut/internal/entity"
+)
+
+type SRTController struct {
+	c *entity.Config
+}
+
+func NewSRTController(c *entity.Config) *SRTController {
+	return &SRTController{
+		c: c,
+	}
+}
+
+func (c *SRTController) Connect(offer *entity.ParamsOffer) error {
+	if err := offer.Valid(); err != nil {
+		return err
+	}
+
+	// conn, err := c.srtConnect(offer)
+	// if err != nil {
+	// 	return err
+	// }
+
+	return nil
+}
+
+func (c *SRTController) srtConnect(offer *entity.ParamsOffer) (*astisrt.Connection, error) {
+	srtConnection, err := astisrt.Dial(astisrt.DialOptions{
+		ConnectionOptions: []astisrt.ConnectionOption{
+			astisrt.WithLatency(c.c.SRTConnectionLatencyMS),
+			astisrt.WithStreamid(offer.SRTStreamID),
+		},
+		OnDisconnect: func(c *astisrt.Connection, err error) {
+			log.Fatal("Disconnected from SRT")
+		},
+		Host: offer.SRTHost,
+		Port: offer.SRTPort,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return srtConnection, nil
+}

internal/entity/entitities.go

@@ -1,7 +1,6 @@
 package entity
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/pion/webrtc/v3"
@@ -18,19 +17,19 @@ type ParamsOffer struct {
 
 func (p *ParamsOffer) Valid() error {
 	if p == nil {
-		return errors.New("ParamsOffer must not be nil")
+		return ErrMissingParamsOffer
 	}
 
 	if p.SRTHost == "" {
-		return errors.New("SRTHost must not be nil")
+		return ErrMissingSRTHost
 	}
 
 	if p.SRTPort == 0 {
-		return errors.New("SRTPort must be valid")
+		return ErrMissingSRTPort
 	}
 
 	if p.SRTStreamID == "" {
-		return errors.New("SRTStreamID must not be empty")
+		return ErrMissingSRTStreamID
 	}
 
 	return nil
@@ -53,3 +52,18 @@ type Message struct {
 	Type    MessageType
 	Message string
 }
+
+type Config struct {
+	HTTPPort int32  `required:"true" default:"8080"`
+	HTTPHost string `required:"true" default:"0.0.0.0"`
+
+	TCPICEPort         int      `required:"true" default:"8081"`
+	UDPICEPort         int      `required:"true" default:"8081"`
+	ICEReadBufferSize  int      `required:"true" default:"8"`
+	ICEExternalIPsDNAT []string `required:"true" default:"127.0.0.1"`
+	EnableICEMux       bool     `require:"true" default:"false"`
+	StunServers        []string `required:"true" default:"stun:stun4.l.google.com:19302"`
+
+	SRTConnectionLatencyMS int32 `required:"true" default:"300"`
+	SRTReadBufferSizeBytes int   `required:"true" default:"1316"`
+}

internal/entity/errors.go

@@ -0,0 +1,10 @@
+package entity
+
+import "errors"
+
+var ErrHTTPGetOnly = errors.New("you must use http GET verb")
+var ErrHTTPPostOnly = errors.New("you must use http POST verb")
+var ErrMissingParamsOffer = errors.New("ParamsOffer must not be nil")
+var ErrMissingSRTHost = errors.New("SRTHost must not be nil")
+var ErrMissingSRTPort = errors.New("SRTPort must be valid")
+var ErrMissingSRTStreamID = errors.New("SRTStreamID must not be empty")

internal/web/handlers.go

@@ -1,7 +0,0 @@
-package handlers
-
-import "net/http"
-
-func MediaInfo(w http.ResponseWriter, r *http.Request) {
-
-}

internal/web/http.go

@@ -0,0 +1,41 @@
+package handlers
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/http"
+
+	"github.com/flavioribeiro/donut/internal/entity"
+	"go.uber.org/fx"
+	"go.uber.org/zap"
+)
+
+func NewHTTPServer(
+	c *entity.Config,
+	mux *http.ServeMux,
+	log *zap.Logger,
+	lc fx.Lifecycle,
+) *http.Server {
+	srv := &http.Server{
+		Addr:    fmt.Sprintf("%s:%d", c.HTTPHost, c.HTTPPort),
+		Handler: mux,
+	}
+	lc.Append(fx.Hook{
+		OnStart: func(ctx context.Context) error {
+			ln, err := net.Listen("tcp", srv.Addr)
+			if err != nil {
+				return err
+			}
+			log.Sugar().Infow(fmt.Sprintf("Starting HTTP server. Open http://%s to access the demo", srv.Addr),
+				"addr", srv.Addr,
+			)
+			go srv.Serve(ln)
+			return nil
+		},
+		OnStop: func(ctx context.Context) error {
+			return srv.Shutdown(ctx)
+		},
+	})
+	return srv
+}

internal/web/ice.go

@@ -0,0 +1,50 @@
+package handlers
+
+import (
+	"net"
+
+	"github.com/flavioribeiro/donut/internal/entity"
+	"github.com/pion/webrtc/v3"
+)
+
+func NewTCPICEServer(c *entity.Config) (*net.TCPListener, error) {
+	tcpListener, err := net.ListenTCP("tcp", &net.TCPAddr{
+		IP:   net.IP{0, 0, 0, 0},
+		Port: c.TCPICEPort,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return tcpListener, nil
+}
+
+func NewUDPICEServer(c *entity.Config) (*net.UDPConn, error) {
+
+	udpListener, err := net.ListenUDP("udp", &net.UDPAddr{
+		IP:   net.IP{0, 0, 0, 0},
+		Port: c.UDPICEPort,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return udpListener, nil
+}
+
+func NewWebRTCSettingsEngine(c *entity.Config, tcpListener *net.TCPListener, udpListener *net.UDPConn) *webrtc.SettingEngine {
+	settingEngine := &webrtc.SettingEngine{}
+
+	settingEngine.SetNAT1To1IPs(c.ICEExternalIPsDNAT, webrtc.ICECandidateTypeHost)
+	settingEngine.SetICETCPMux(webrtc.NewICETCPMux(nil, tcpListener, c.ICEReadBufferSize))
+	settingEngine.SetICEUDPMux(webrtc.NewICEUDPMux(nil, udpListener))
+
+	return settingEngine
+}
+
+func NewWebRTCMediaEngine() (*webrtc.MediaEngine, error) {
+	mediaEngine := &webrtc.MediaEngine{}
+	if err := mediaEngine.RegisterDefaultCodecs(); err != nil {
+		return nil, err
+	}
+	return mediaEngine, nil
+}

internal/web/index.go

@@ -0,0 +1,20 @@
+package handlers
+
+import (
+	_ "embed"
+	"net/http"
+)
+
+//go:embed index.html
+var indexHTML string
+
+type IndexHandler struct{}
+
+func NewIndexHandler() *IndexHandler {
+	return &IndexHandler{}
+}
+
+func (h *IndexHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte(indexHTML))
+}

internal/web/media.go

@@ -0,0 +1,49 @@
+package handlers
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+
+	astisrt "github.com/asticode/go-astisrt/pkg"
+	"github.com/flavioribeiro/donut/internal/entity"
+)
+
+type MediaHandler struct{}
+
+func NewMediaHandler() *MediaHandler {
+	return &MediaHandler{}
+}
+
+func (m *MediaHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	SetCORS(w, r)
+	if r.Method != http.MethodGet {
+		ErrorToHTTP(w, entity.ErrHTTPGetOnly)
+		return
+	}
+
+	offer := entity.ParamsOffer{}
+	if err := json.NewDecoder(r.Body).Decode(&offer); err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+
+	log.Println("Connecting to SRT ", offer)
+	_, err := astisrt.Dial(astisrt.DialOptions{
+		ConnectionOptions: []astisrt.ConnectionOption{
+			astisrt.WithLatency(300),
+			astisrt.WithStreamid(offer.SRTStreamID),
+		},
+
+		// Callback when the connection is disconnected
+		OnDisconnect: func(c *astisrt.Connection, err error) { log.Fatal("Disconnected from SRT") },
+
+		Host: offer.SRTHost,
+		Port: offer.SRTPort,
+	})
+	if err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+	log.Println("Connected to SRT")
+}

internal/web/router.go

@@ -0,0 +1,16 @@
+package handlers
+
+import "net/http"
+
+func NewServeMux(
+	index *IndexHandler,
+	signaling *SignalingHandler,
+) *http.ServeMux {
+
+	mux := http.NewServeMux()
+
+	mux.Handle("/", index)
+	mux.Handle("/doSignaling", signaling)
+
+	return mux
+}

internal/web/signaling.go

@@ -0,0 +1,233 @@
+package handlers
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	astisrt "github.com/asticode/go-astisrt/pkg"
+	"github.com/asticode/go-astits"
+	"github.com/flavioribeiro/donut/eia608"
+	"github.com/flavioribeiro/donut/internal/entity"
+	"github.com/pion/webrtc/v3"
+	"github.com/pion/webrtc/v3/pkg/media"
+	"go.uber.org/zap"
+)
+
+type SignalingHandler struct {
+	c             *entity.Config
+	l             *zap.Logger
+	webrtcSetting *webrtc.SettingEngine
+	mediaEngine   *webrtc.MediaEngine
+}
+
+func NewSignalingHandler(c *entity.Config, log *zap.Logger, webrtcSetting *webrtc.SettingEngine, mediaEngine *webrtc.MediaEngine) *SignalingHandler {
+	return &SignalingHandler{
+		c:             c,
+		l:             log,
+		webrtcSetting: webrtcSetting,
+		mediaEngine:   mediaEngine,
+	}
+}
+
+func (h *SignalingHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	SetCORS(w, r)
+	if r.Method != http.MethodPost {
+		ErrorToHTTP(w, entity.ErrHTTPPostOnly)
+		return
+	}
+
+	peerConnectionConfiguration := webrtc.Configuration{}
+	if !h.c.EnableICEMux {
+		peerConnectionConfiguration.ICEServers = []webrtc.ICEServer{
+			{
+				URLs: h.c.StunServers,
+			},
+		}
+	}
+
+	api := webrtc.NewAPI(
+		webrtc.WithSettingEngine(*h.webrtcSetting),
+		webrtc.WithMediaEngine(h.mediaEngine),
+	)
+
+	peerConnection, err := api.NewPeerConnection(peerConnectionConfiguration)
+	if err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+
+	offer := entity.ParamsOffer{}
+	if err := json.NewDecoder(r.Body).Decode(&offer); err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+
+	// Create a video track
+	videoTrack, err := webrtc.NewTrackLocalStaticSample(
+		webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeH264},
+		"video", offer.SRTStreamID,
+	)
+	if err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+	if _, err := peerConnection.AddTrack(videoTrack); err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+
+	// Create data channel for metadata transmission
+	metadataSender, err := peerConnection.CreateDataChannel("metadata", nil)
+	if err != nil {
+		ErrorToHTTP(w, err)
+	}
+
+	// Set the handler for ICE connection state
+	// This will notify you when the peer has connected/disconnected
+	peerConnection.OnICEConnectionStateChange(func(connectionState webrtc.ICEConnectionState) {
+		h.l.Sugar().Infow("ICE Connection State has changed",
+			"status", connectionState.String(),
+		)
+	})
+
+	err = offer.Valid()
+	if err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+	if err = peerConnection.SetRemoteDescription(offer.Offer); err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+
+	h.l.Sugar().Infow("Gathering WebRTC Candidates")
+	gatherComplete := webrtc.GatheringCompletePromise(peerConnection)
+	answer, err := peerConnection.CreateAnswer(nil)
+	if err != nil {
+		ErrorToHTTP(w, err)
+		return
+	} else if err = peerConnection.SetLocalDescription(answer); err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+	<-gatherComplete
+
+	h.l.Sugar().Infow("Gathering WebRTC Candidates Complete")
+
+	response, err := json.Marshal(*peerConnection.LocalDescription())
+	if err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+
+	h.l.Sugar().Infow("Connecting to SRT ",
+		"offer", offer,
+	)
+	srtConnection, err := astisrt.Dial(astisrt.DialOptions{
+		ConnectionOptions: []astisrt.ConnectionOption{
+			astisrt.WithLatency(h.c.SRTConnectionLatencyMS),
+			astisrt.WithStreamid(offer.SRTStreamID),
+		},
+
+		OnDisconnect: func(c *astisrt.Connection, err error) {
+			h.l.Sugar().Fatalw("Disconnected from SRT",
+				"error", err,
+			)
+		},
+
+		Host: offer.SRTHost,
+		Port: offer.SRTPort,
+	})
+	if err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+	h.l.Sugar().Infow("Connected to SRT")
+
+	go srtToWebRTC(srtConnection, videoTrack, metadataSender)
+
+	w.Header().Set("Content-Type", "application/json")
+	if _, err := w.Write(response); err != nil {
+		ErrorToHTTP(w, err)
+		return
+	}
+}
+
+func srtToWebRTC(srtConnection *astisrt.Connection, videoTrack *webrtc.TrackLocalStaticSample, metadataTrack *webrtc.DataChannel) {
+	r, w := io.Pipe()
+	defer r.Close()
+	defer w.Close()
+	defer srtConnection.Close()
+
+	go func() {
+		defer srtConnection.Close()
+		inboundMpegTsPacket := make([]byte, 1316) // SRT Read Size
+
+		for {
+			n, err := srtConnection.Read(inboundMpegTsPacket)
+			if err != nil {
+				break
+			}
+
+			if _, err := w.Write(inboundMpegTsPacket[:n]); err != nil {
+				break
+			}
+		}
+	}()
+
+	dmx := astits.NewDemuxer(context.Background(), r)
+	eia608Reader := eia608.NewEIA608Reader()
+	h264PID := uint16(0)
+	for {
+		d, err := dmx.NextData()
+		if err != nil {
+			break
+		}
+
+		if d.PMT != nil {
+			for _, es := range d.PMT.ElementaryStreams {
+				msg, _ := json.Marshal(entity.Message{
+					Type:    entity.MessageTypeMetadata,
+					Message: es.StreamType.String(),
+				})
+				metadataTrack.SendText(string(msg))
+				if es.StreamType == astits.StreamTypeH264Video {
+					h264PID = es.ElementaryPID
+				}
+			}
+
+			for _, d := range d.PMT.ProgramDescriptors {
+				if d.MaximumBitrate != nil {
+					bitrateInMbitsPerSecond := float32(d.MaximumBitrate.Bitrate) / float32(125000)
+					msg, _ := json.Marshal(entity.Message{
+						Type:    entity.MessageTypeMetadata,
+						Message: fmt.Sprintf("Bitrate %.2fMbps", bitrateInMbitsPerSecond),
+					})
+					metadataTrack.SendText(string(msg))
+				}
+			}
+		}
+
+		if d.PID == h264PID && d.PES != nil {
+			if err = videoTrack.WriteSample(media.Sample{Data: d.PES.Data, Duration: time.Second / 30}); err != nil {
+				break
+			}
+			captions, err := eia608Reader.Parse(d.PES)
+			if err != nil {
+				break
+			}
+			if captions != "" {
+				captionsMsg, err := eia608.BuildCaptionsMessage(d.PES.Header.OptionalHeader.PTS, captions)
+				if err != nil {
+					break
+				}
+				metadataTrack.SendText(captionsMsg)
+			}
+		}
+	}
+
+}

internal/web/util.go

@@ -1,15 +1,12 @@
-package main
+package handlers
 
-import (
-	"net/http"
-)
+import "net/http"
 
-func errorToHTTP(w http.ResponseWriter, err error) {
-	w.WriteHeader(500)
-	w.Write([]byte(err.Error()))
+func ErrorToHTTP(w http.ResponseWriter, err error) {
+	http.Error(w, err.Error(), http.StatusInternalServerError)
 }
 
-func setCors(w http.ResponseWriter, r *http.Request) {
+func SetCORS(w http.ResponseWriter, r *http.Request) {
 	if origin := r.Header.Get("Origin"); origin != "" {
 		allowedHeaders := "Accept, Content-Type, Content-Length, Accept-Encoding, Authorization,X-CSRF-Token"
 		w.Header().Set("Access-Control-Allow-Origin", "*")

main.go

@@ -4,259 +4,49 @@
 package main
 
 import (
-	"context"
-	_ "embed"
-	"encoding/json"
 	"flag"
-	"fmt"
-	"io"
 	"log"
-	"net"
 	"net/http"
-	"time"
 
-	"github.com/flavioribeiro/donut/eia608"
 	"github.com/flavioribeiro/donut/internal/entity"
+	handlers "github.com/flavioribeiro/donut/internal/web"
 
-	astisrt "github.com/asticode/go-astisrt/pkg"
-	"github.com/asticode/go-astits"
-	"github.com/pion/webrtc/v3"
-	"github.com/pion/webrtc/v3/pkg/media"
+	"github.com/kelseyhightower/envconfig"
+	"go.uber.org/fx"
+	"go.uber.org/zap"
 )
 
-var (
-	//go:embed index.html
-	indexHTML string
-
-	api *webrtc.API //nolint
-
-	enableICEMux = false
-)
-
-func srtToWebRTC(srtConnection *astisrt.Connection, videoTrack *webrtc.TrackLocalStaticSample, metadataTrack *webrtc.DataChannel) {
-	r, w := io.Pipe()
-	defer r.Close()
-	defer w.Close()
-	defer srtConnection.Close()
-
-	go func() {
-		defer srtConnection.Close()
-		inboundMpegTsPacket := make([]byte, 1316) // SRT Read Size
-
-		for {
-			n, err := srtConnection.Read(inboundMpegTsPacket)
-			if err != nil {
-				break
-			}
-
-			if _, err := w.Write(inboundMpegTsPacket[:n]); err != nil {
-				break
-			}
-		}
-	}()
-
-	dmx := astits.NewDemuxer(context.Background(), r)
-	eia608Reader := eia608.NewEIA608Reader()
-	h264PID := uint16(0)
-	for {
-		d, err := dmx.NextData()
-		if err != nil {
-			break
-		}
-
-		if d.PMT != nil {
-			for _, es := range d.PMT.ElementaryStreams {
-				msg, _ := json.Marshal(entity.Message{
-					Type:    entity.MessageTypeMetadata,
-					Message: es.StreamType.String(),
-				})
-				metadataTrack.SendText(string(msg))
-				if es.StreamType == astits.StreamTypeH264Video {
-					h264PID = es.ElementaryPID
-				}
-			}
-
-			for _, d := range d.PMT.ProgramDescriptors {
-				if d.MaximumBitrate != nil {
-					bitrateInMbitsPerSecond := float32(d.MaximumBitrate.Bitrate) / float32(125000)
-					msg, _ := json.Marshal(entity.Message{
-						Type:    entity.MessageTypeMetadata,
-						Message: fmt.Sprintf("Bitrate %.2fMbps", bitrateInMbitsPerSecond),
-					})
-					metadataTrack.SendText(string(msg))
-				}
-			}
-		}
-
-		if d.PID == h264PID && d.PES != nil {
-			if err = videoTrack.WriteSample(media.Sample{Data: d.PES.Data, Duration: time.Second / 30}); err != nil {
-				break
-			}
-			captions, err := eia608Reader.Parse(d.PES)
-			if err != nil {
-				break
-			}
-			if captions != "" {
-				captionsMsg, err := eia608.BuildCaptionsMessage(d.PES.Header.OptionalHeader.PTS, captions)
-				if err != nil {
-					break
-				}
-				metadataTrack.SendText(captionsMsg)
-			}
-		}
-	}
-
-}
-
-func doSignaling(w http.ResponseWriter, r *http.Request) {
-	setCors(w, r)
-	if r.Method != http.MethodPost {
-		return
-	}
-
-	peerConnectionConfiguration := webrtc.Configuration{}
-	if !enableICEMux {
-		peerConnectionConfiguration.ICEServers = []webrtc.ICEServer{
-			{
-				URLs: []string{
-					"stun:stun4.l.google.com:19302",
-				},
-			},
-		}
-	}
-
-	peerConnection, err := api.NewPeerConnection(peerConnectionConfiguration)
-	if err != nil {
-		errorToHTTP(w, err)
-		return
-	}
-
-	offer := entity.ParamsOffer{}
-
-	if err = json.NewDecoder(r.Body).Decode(&offer); err != nil {
-		errorToHTTP(w, err)
-		return
-	}
-
-	// Create a video track
-	videoTrack, err := webrtc.NewTrackLocalStaticSample(webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeH264}, "video", offer.SRTStreamID)
-	if err != nil {
-		errorToHTTP(w, err)
-		return
-	}
-	if _, err := peerConnection.AddTrack(videoTrack); err != nil {
-		errorToHTTP(w, err)
-		return
-	}
-
-	// Create data channel for metadata transmission
-	metadataSender, err := peerConnection.CreateDataChannel("metadata", nil)
-	if err != nil {
-		errorToHTTP(w, err)
-	}
-
-	// Set the handler for ICE connection state
-	// This will notify you when the peer has connected/disconnected
-	peerConnection.OnICEConnectionStateChange(func(connectionState webrtc.ICEConnectionState) {
-		log.Printf("ICE Connection State has changed: %s\n", connectionState.String())
-	})
-
-	err = offer.Valid()
-	if err != nil {
-		errorToHTTP(w, err)
-		return
-	}
-
-	if err = peerConnection.SetRemoteDescription(offer.Offer); err != nil {
-		errorToHTTP(w, err)
-		return
-	}
-
-	log.Println("Gathering WebRTC Candidates")
-	gatherComplete := webrtc.GatheringCompletePromise(peerConnection)
-	answer, err := peerConnection.CreateAnswer(nil)
-	if err != nil {
-		errorToHTTP(w, err)
-		return
-	} else if err = peerConnection.SetLocalDescription(answer); err != nil {
-		errorToHTTP(w, err)
-		return
-	}
-	<-gatherComplete
-	log.Println("Gathering WebRTC Candidates Complete")
-
-	response, err := json.Marshal(*peerConnection.LocalDescription())
-	if err != nil {
-		return
-	}
-
-	log.Println("Connecting to SRT ", offer)
-	srtConnection, err := astisrt.Dial(astisrt.DialOptions{
-		ConnectionOptions: []astisrt.ConnectionOption{
-			astisrt.WithLatency(300),
-			astisrt.WithStreamid(offer.SRTStreamID),
-		},
-
-		// Callback when the connection is disconnected
-		OnDisconnect: func(c *astisrt.Connection, err error) { log.Fatal("Disconnected from SRT") },
-
-		Host: offer.SRTHost,
-		Port: offer.SRTPort,
-	})
-	if err != nil {
-		errorToHTTP(w, err)
-		return
-	}
-	log.Println("Connected to SRT")
-
-	go srtToWebRTC(srtConnection, videoTrack, metadataSender)
-
-	w.Header().Set("Content-Type", "application/json")
-	if _, err := w.Write(response); err != nil {
-		errorToHTTP(w, err)
-		return
-	}
-}
-
 func main() {
+	enableICEMux := false
 	flag.BoolVar(&enableICEMux, "enable-ice-mux", false, "Enable ICE Mux on :8081")
 	flag.Parse()
 
-	mediaEngine := &webrtc.MediaEngine{}
-	settingEngine := webrtc.SettingEngine{}
-	if err := mediaEngine.RegisterDefaultCodecs(); err != nil {
-		log.Fatal(err)
+	var c entity.Config
+	err := envconfig.Process("donut", &c)
+	if err != nil {
+		log.Fatal(err.Error())
 	}
+	c.EnableICEMux = enableICEMux
 
-	if enableICEMux {
-		tcpListener, err := net.ListenTCP("tcp", &net.TCPAddr{
-			IP:   net.IP{0, 0, 0, 0},
-			Port: 8081,
-		})
-		if err != nil {
-			log.Fatal(err)
-		}
+	fx.New(
+		fx.Provide(func() *entity.Config {
+			return &c
+		}),
+		fx.Provide(handlers.NewHTTPServer),
 
-		udpListener, err := net.ListenUDP("udp", &net.UDPAddr{
-			IP:   net.IP{0, 0, 0, 0},
-			Port: 8081,
-		})
-		if err != nil {
-			log.Fatal(err)
-		}
+		fx.Provide(handlers.NewSignalingHandler),
+		fx.Provide(handlers.NewIndexHandler),
 
-		settingEngine.SetNAT1To1IPs([]string{"127.0.0.1"}, webrtc.ICECandidateTypeHost)
-		settingEngine.SetICETCPMux(webrtc.NewICETCPMux(nil, tcpListener, 8))
-		settingEngine.SetICEUDPMux(webrtc.NewICEUDPMux(nil, udpListener))
-	}
-	api = webrtc.NewAPI(webrtc.WithSettingEngine(settingEngine), webrtc.WithMediaEngine(mediaEngine))
+		fx.Provide(handlers.NewServeMux),
 
-	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(200)
-		w.Write([]byte(indexHTML))
-	})
-	http.HandleFunc("/doSignaling", doSignaling)
+		fx.Provide(handlers.NewTCPICEServer),
+		fx.Provide(handlers.NewUDPICEServer),
+		fx.Provide(handlers.NewWebRTCSettingsEngine),
+		fx.Provide(handlers.NewWebRTCMediaEngine),
 
-	log.Println("Open http://localhost:8080 to access this demo")
-	log.Fatal(http.ListenAndServe(":8080", nil))
+		fx.Provide(zap.NewProduction),
+
+		// just to enforce the lifecycle by using NewHTTPServer
+		fx.Invoke(func(*http.Server) {}),
+	).Run()
 }