fix: Android torrent playback error

Author: MiaoMint

app/app.go

@@ -1,6 +1,9 @@
 package app
 
 import (
+	"context"
+	"net"
+
 	"github.com/anacrolix/torrent"
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/log"
@@ -15,6 +18,9 @@ var (
 )
 
 func init() {
+	// 修复 Android 的 DNS 问题
+	// https://github.com/YouROK/TorrServer/blob/34634649024b06921e7f2bb068da4a4ad35fabe4/server/cmd/main.go#L101-L120
+	dnsResolve()
 	var err error
 	App = fiber.New()
 
@@ -42,3 +48,24 @@ func init() {
 	}
 	log.Info("BT client started")
 }
+
+func dnsResolve() {
+	addrs, err := net.LookupHost("www.google.com")
+	if len(addrs) == 0 {
+		log.Error("Check dns failed", addrs, err)
+
+		fn := func(ctx context.Context, network, address string) (net.Conn, error) {
+			d := net.Dialer{}
+			return d.DialContext(ctx, "udp", "1.1.1.1:53")
+		}
+
+		net.DefaultResolver = &net.Resolver{
+			Dial: fn,
+		}
+
+		addrs, err = net.LookupHost("www.google.com")
+		log.Info("Check cloudflare dns", addrs, err)
+	} else {
+		log.Info("Check dns OK", addrs, err)
+	}
+}

config/env.go

@@ -2,7 +2,7 @@ package config
 
 import "os"
 
-const VERSION = "0.0.2"
+const VERSION = "0.0.3"
 
 var (
 	SECRET                 = getVar("SECRET", "")

go.mod

@@ -2,6 +2,11 @@ module github.com/miru-project/bt-server
 
 go 1.19
 
+require (
+	github.com/anacrolix/torrent v1.52.5
+	github.com/gofiber/fiber/v2 v2.48.0
+)
+
 require (
 	crawshaw.io/sqlite v0.3.3-0.20220618202545-d1964889ea3c // indirect
 	github.com/RoaringBitmap/roaring v1.2.3 // indirect
@@ -20,48 +25,28 @@ require (
 	github.com/anacrolix/multiless v0.3.0 // indirect
 	github.com/anacrolix/stm v0.4.0 // indirect
 	github.com/anacrolix/sync v0.4.0 // indirect
-	github.com/anacrolix/torrent v1.52.5 // indirect
 	github.com/anacrolix/upnp v0.1.3-0.20220123035249-922794e51c96 // indirect
 	github.com/anacrolix/utp v0.1.0 // indirect
 	github.com/andybalholm/brotli v1.0.5 // indirect
-	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
 	github.com/bahlo/generic-list-go v0.2.0 // indirect
 	github.com/benbjohnson/immutable v0.3.0 // indirect
 	github.com/bits-and-blooms/bitset v1.2.2 // indirect
 	github.com/bradfitz/iter v0.0.0-20191230175014-e8f45d346db8 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dustin/go-humanize v1.0.0 // indirect
 	github.com/edsrzf/mmap-go v1.1.0 // indirect
-	github.com/felixge/httpsnoop v1.0.3 // indirect
 	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/go-openapi/analysis v0.21.4 // indirect
-	github.com/go-openapi/errors v0.20.4 // indirect
-	github.com/go-openapi/jsonpointer v0.20.0 // indirect
-	github.com/go-openapi/jsonreference v0.20.2 // indirect
-	github.com/go-openapi/loads v0.21.2 // indirect
-	github.com/go-openapi/runtime v0.26.0 // indirect
-	github.com/go-openapi/spec v0.20.9 // indirect
-	github.com/go-openapi/strfmt v0.21.7 // indirect
-	github.com/go-openapi/swag v0.22.4 // indirect
-	github.com/go-openapi/validate v0.22.1 // indirect
-	github.com/gofiber/contrib/swagger v1.0.8 // indirect
-	github.com/gofiber/fiber/v2 v2.48.0 // indirect
 	github.com/google/btree v1.1.2 // indirect
 	github.com/google/uuid v1.3.1 // indirect
-	github.com/gorilla/handlers v1.5.1 // indirect
 	github.com/gorilla/websocket v1.5.0 // indirect
 	github.com/huandu/xstrings v1.3.2 // indirect
-	github.com/josharian/intern v1.0.0 // indirect
 	github.com/klauspost/compress v1.16.7 // indirect
 	github.com/lispad/go-generics-tools v1.1.0 // indirect
-	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect
-	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/mschoch/smat v0.2.0 // indirect
-	github.com/oklog/ulid v1.3.1 // indirect
 	github.com/pion/datachannel v1.5.2 // indirect
 	github.com/pion/dtls/v2 v2.2.4 // indirect
 	github.com/pion/ice/v2 v2.2.6 // indirect
@@ -83,12 +68,12 @@ require (
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/rivo/uniseg v0.4.4 // indirect
 	github.com/rs/dnscache v0.0.0-20211102005908-e0241e321417 // indirect
+	github.com/stretchr/testify v1.8.4 // indirect
 	github.com/tidwall/btree v1.6.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasthttp v1.48.0 // indirect
 	github.com/valyala/tcplisten v1.0.0 // indirect
 	go.etcd.io/bbolt v1.3.6 // indirect
-	go.mongodb.org/mongo-driver v1.12.1 // indirect
 	go.opentelemetry.io/otel v1.14.0 // indirect
 	go.opentelemetry.io/otel/trace v1.14.0 // indirect
 	golang.org/x/crypto v0.7.0 // indirect
@@ -97,5 +82,4 @@ require (
 	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 // indirect
 	golang.org/x/sys v0.11.0 // indirect
 	golang.org/x/time v0.0.0-20220609170525-579cf78fd858 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
 )