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// Copyright (C) 2016 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
package protocol
import (
"context"
"crypto/tls"
"encoding/binary"
"net"
"testing"
"github.com/syncthing/syncthing/lib/dialer"
"github.com/syncthing/syncthing/lib/testutil"
)
func BenchmarkRequestsRawTCP(b *testing.B) {
// Benchmarks the rate at which we can serve requests over a single,
// unencrypted TCP channel over the loopback interface.
// Get a connected TCP pair
conn0, conn1, err := getTCPConnectionPair()
if err != nil {
b.Fatal(err)
}
defer conn0.Close()
defer conn1.Close()
// Bench it
benchmarkRequestsConnPair(b, conn0, conn1)
}
func BenchmarkRequestsTLSoTCP(b *testing.B) {
conn0, conn1, err := getTCPConnectionPair()
if err != nil {
b.Fatal(err)
}
defer conn0.Close()
defer conn1.Close()
benchmarkRequestsTLS(b, conn0, conn1)
}
func benchmarkRequestsTLS(b *testing.B, conn0, conn1 net.Conn) {
// Benchmarks the rate at which we can serve requests over a single,
// TLS encrypted channel over the loopback interface.
// Load a certificate, skipping this benchmark if it doesn't exist
cert, err := tls.LoadX509KeyPair("../../test/h1/cert.pem", "../../test/h1/key.pem")
if err != nil {
b.Skip(err)
return
}
/// TLSify them
conn0, conn1 = negotiateTLS(cert, conn0, conn1)
// Bench it
benchmarkRequestsConnPair(b, conn0, conn1)
}
func benchmarkRequestsConnPair(b *testing.B, conn0, conn1 net.Conn) {
// Start up Connections on them
c0 := NewConnection(LocalDeviceID, conn0, conn0, testutil.NoopCloser{}, new(fakeModel), new(mockedConnectionInfo), CompressionMetadata, nil, testKeyGen)
c0.Start()
c1 := NewConnection(LocalDeviceID, conn1, conn1, testutil.NoopCloser{}, new(fakeModel), new(mockedConnectionInfo), CompressionMetadata, nil, testKeyGen)
c1.Start()
// Satisfy the assertions in the protocol by sending an initial cluster config
c0.ClusterConfig(&ClusterConfig{})
c1.ClusterConfig(&ClusterConfig{})
// Report some useful stats and reset the timer for the actual test
b.ReportAllocs()
b.SetBytes(128 << 10)
b.ResetTimer()
// Request 128 KiB blocks, which will be satisfied by zero copy from the
// other side (we'll get back a full block of zeroes).
var buf []byte
var err error
for i := 0; i < b.N; i++ {
// Use c0 and c1 for each alternating request, so we get as much
// data flowing in both directions.
if i%2 == 0 {
buf, err = c0.Request(context.Background(), &Request{Folder: "folder", Name: "file", BlockNo: i, Offset: int64(i), Size: 128 << 10})
} else {
buf, err = c1.Request(context.Background(), &Request{Folder: "folder", Name: "file", BlockNo: i, Offset: int64(i), Size: 128 << 10})
}
if err != nil {
b.Fatal(err)
}
if len(buf) != 128<<10 {
b.Fatal("Incorrect returned buf length", len(buf), "!=", 128<<10)
}
// The fake model is supposed to tag the end of the buffer with the
// requested offset, so we can verify that we get back data for this
// block correctly.
if binary.BigEndian.Uint64(buf[128<<10-8:]) != uint64(i) {
b.Fatal("Bad data returned")
}
}
}
// returns the two endpoints of a TCP connection over lo0
func getTCPConnectionPair() (net.Conn, net.Conn, error) {
lst, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
return nil, nil, err
}
// We run the Accept in the background since it's blocking, and we use
// the channel to make the race thingies happy about writing vs reading
// conn0 and err0.
var conn0 net.Conn
var err0 error
done := make(chan struct{})
go func() {
conn0, err0 = lst.Accept()
close(done)
}()
// Dial the connection
conn1, err := net.Dial("tcp", lst.Addr().String())
if err != nil {
return nil, nil, err
}
// Check any error from accept
<-done
if err0 != nil {
return nil, nil, err0
}
// Set the buffer sizes etc as usual
dialer.SetTCPOptions(conn0)
dialer.SetTCPOptions(conn1)
return conn0, conn1, nil
}
func negotiateTLS(cert tls.Certificate, conn0, conn1 net.Conn) (net.Conn, net.Conn) {
cfg := &tls.Config{
Certificates: []tls.Certificate{cert},
NextProtos: []string{"bep/1.0"},
ClientAuth: tls.RequestClientCert,
SessionTicketsDisabled: true,
InsecureSkipVerify: true,
MinVersion: tls.VersionTLS12,
CipherSuites: []uint16{
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
},
}
tlsc0 := tls.Server(conn0, cfg)
tlsc1 := tls.Client(conn1, cfg)
return tlsc0, tlsc1
}
// The fake model does nothing much
type fakeModel struct{}
func (*fakeModel) Index(Connection, *Index) error {
return nil
}
func (*fakeModel) IndexUpdate(Connection, *IndexUpdate) error {
return nil
}
func (*fakeModel) Request(_ Connection, req *Request) (RequestResponse, error) {
// We write the offset to the end of the buffer, so the receiver
// can verify that it did in fact get some data back over the
// connection.
buf := make([]byte, req.Size)
binary.BigEndian.PutUint64(buf[len(buf)-8:], uint64(req.Offset))
return &fakeRequestResponse{buf}, nil
}
func (*fakeModel) ClusterConfig(Connection, *ClusterConfig) error {
return nil
}
func (*fakeModel) Closed(Connection, error) {
}
func (*fakeModel) DownloadProgress(Connection, *DownloadProgress) error {
return nil
}
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