Get rid of buffersize everywhere

mtglib/init.go

 	DefaultConcurrency = 4096
 
 	// DefaultBufferSize is a default size of a copy buffer.
+	//
+	// Deprecated: this setting no longer makes any effect.
 	DefaultBufferSize = 16 * 1024 // 16 kib
 
 	// DefaultDomainFrontingPort is a default port (HTTPS) to connect to in

mtglib/internal/relay/conn.go

-package relay
-
-import (
-	"fmt"
-	"net"
-	"time"
-)
-
-type conn struct {
-	net.Conn
-}
-
-func (c conn) Read(p []byte) (int, error) {
-	if err := c.SetReadDeadline(time.Now().Add(getTimeout())); err != nil {
-		return 0, fmt.Errorf("cannot set read deadline: %w", err)
-	}
-
-	return c.Conn.Read(p) // nolint: wrapcheck
-}

mtglib/internal/relay/init.go

 package relay
 
-import "time"
-
 const (
-	ConnectionTimeToLiveMin = 2 * time.Minute
-	ConnectionTimeToLiveMax = 10 * time.Minute
-	TimeoutMin              = 20 * time.Second
-	TimeoutMax              = time.Minute
+	bufferSize = 32 * 1024
 )
 
 type Logger interface {

mtglib/internal/relay/pools.go

 
 var eastWestPool = sync.Pool{
 	New: func() interface{} {
-		return &eastWest{}
+		return &eastWest{
+			east: make([]byte, bufferSize),
+			west: make([]byte, bufferSize),
+		}
 	},
 }
 
-func acquireEastWest(bufferSize int) *eastWest {
+func acquireEastWest() *eastWest {
 	wanted := eastWestPool.Get().(*eastWest) // nolint: forcetypeassert
 
-	if len(wanted.east) != bufferSize {
-		wanted.east = make([]byte, bufferSize)
-	}
-
-	if len(wanted.west) != bufferSize {
-		wanted.west = make([]byte, bufferSize)
-	}
-
 	return wanted
 }
 

mtglib/internal/relay/relay.go

 import (
 	"context"
 	"io"
-	"net"
 	"sync"
 )
 
-func Relay(ctx context.Context, log Logger, bufferSize int,
-	telegramConn net.Conn, clientConn io.ReadWriteCloser) {
+func Relay(ctx context.Context, log Logger, telegramConn, clientConn io.ReadWriteCloser) {
 	defer telegramConn.Close()
 	defer clientConn.Close()
 
-	ctx, cancel := context.WithTimeout(ctx, getConnectionTimeToLive())
+	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
 	go func() {
 		clientConn.Close()
 	}()
 
-	buffers := acquireEastWest(bufferSize)
+	buffers := acquireEastWest()
 	defer releaseEastWest(buffers)
 
-	telegramConn = conn{
-		Conn: telegramConn,
-	}
-
 	wg := &sync.WaitGroup{}
 	wg.Add(2) // nolint: gomnd
 

mtglib/internal/relay/relay_test.go

 }
 
 func (suite *RelayTestSuite) TestExit() {
-	suite.telegramConnMock.On("SetReadDeadline", mock.Anything).Return(nil)
 	suite.telegramConnMock.On("Close").Return(nil)
 	suite.telegramConnMock.On("Read", mock.Anything).Return(10, io.EOF).Once()
 	suite.telegramConnMock.On("Write", mock.Anything).Return(10, io.EOF).Maybe()
 	suite.clientConnMock.On("Write", mock.Anything).Return(10, io.EOF).Maybe()
 	suite.clientConnMock.On("Close").Return(nil)
 
-	relay.Relay(suite.ctx, suite.loggerMock, 1024,
-		suite.telegramConnMock, suite.clientConnMock)
+	relay.Relay(suite.ctx, suite.loggerMock, suite.telegramConnMock, suite.clientConnMock)
 }
 
 func TestRelay(t *testing.T) {

mtglib/internal/relay/timeouts.go

-package relay
-
-import (
-	"math/rand"
-	"time"
-)
-
-func getConnectionTimeToLive() time.Duration {
-	return getTime(ConnectionTimeToLiveMin, ConnectionTimeToLiveMax)
-}
-
-func getTimeout() time.Duration {
-	return getTime(TimeoutMin, TimeoutMax)
-}
-
-func getTime(minDuration, maxDuration time.Duration) time.Duration {
-	minDurationInSeconds := int(minDuration.Seconds())
-	maxDurationInSeconds := int(maxDuration.Seconds())
-	number := minDurationInSeconds + rand.Intn(maxDurationInSeconds-minDurationInSeconds)
-
-	return time.Duration(number) * time.Second
-}

mtglib/internal/relay/timeouts_internal_test.go

-package relay
-
-import (
-	"fmt"
-	"testing"
-
-	"github.com/stretchr/testify/suite"
-)
-
-type TimeoutsTestSuite struct {
-	suite.Suite
-}
-
-func (suite *TimeoutsTestSuite) TestGetConnectionTimeToLive() {
-	for i := 0; i < 100; i++ {
-		value := getConnectionTimeToLive()
-		message := fmt.Sprintf("generated value is %v", value)
-
-		suite.GreaterOrEqual(value, ConnectionTimeToLiveMin, message)
-		suite.LessOrEqual(value, ConnectionTimeToLiveMax, message)
-	}
-}
-
-func (suite *TimeoutsTestSuite) TestGetTimeout() {
-	for i := 0; i < 100; i++ {
-		value := getTimeout()
-		message := fmt.Sprintf("generated value is %v", value)
-
-		suite.GreaterOrEqual(value, TimeoutMin, message)
-		suite.LessOrEqual(value, TimeoutMax, message)
-	}
-}
-
-func TestTimeouts(t *testing.T) {
-	t.Parallel()
-	suite.Run(t, &TimeoutsTestSuite{})
-}

mtglib/proxy.go

 
 	allowFallbackOnUnknownDC bool
 	tolerateTimeSkewness     time.Duration
-	bufferSize               int
 	domainFrontingPort       int
 	workerPool               *ants.PoolWithFunc
 	telegram                 *telegram.Telegram
 	relay.Relay(
 		ctx,
 		ctx.logger.Named("relay"),
-		p.bufferSize,
 		ctx.telegramConn,
 		ctx.clientConn,
 	)
 	relay.Relay(
 		ctx,
 		ctx.logger.Named("domain-fronting"),
-		p.bufferSize,
 		frontConn,
 		conn,
 	)
 		logger:                   opts.getLogger("proxy"),
 		domainFrontingPort:       opts.getDomainFrontingPort(),
 		tolerateTimeSkewness:     opts.getTolerateTimeSkewness(),
-		bufferSize:               opts.getBufferSize(),
 		allowFallbackOnUnknownDC: opts.AllowFallbackOnUnknownDC,
 		telegram:                 tg,
 	}

mtglib/proxy_opts.go

 	return nil
 }
 
-func (p ProxyOpts) getBufferSize() int {
-	if p.BufferSize < 1 {
-		return DefaultBufferSize
-	}
-
-	return int(p.BufferSize)
-}
-
 func (p ProxyOpts) getConcurrency() int {
 	if p.Concurrency == 0 {
 		return DefaultConcurrency

network/default_test.go

 	suite.Error(err)
 }
 
-func (suite *DefaultDialerTestSuite) TestNegativeBufferSize() {
-	_, err := network.NewDefaultDialer(0, -1)
-	suite.Error(err)
-}
-
 func (suite *DefaultDialerTestSuite) TestUnsupportedProtocol() {
 	_, err := suite.d.DialContext(context.Background(),
 		"udp",