erpc

README

Teleport

Teleport is a versatile, high-performance and flexible socket framework.

It can be used for peer-peer, rpc, gateway, micro services, push services, game services and so on.

简体中文

Benchmark

Self Test

• A server and a client process, running on the same machine

• CPU: Intel Xeon E312xx (Sandy Bridge) 16 cores 2.53GHz

• Memory: 16G

• OS: Linux 2.6.32-696.16.1.el6.centos.plus.x86_64, CentOS 6.4

• Go: 1.9.2

• Message size: 581 bytes

• Message codec: protobuf

• Sent total 1000000 messages

• teleport

client concurrency	mean(ms)	median(ms)	max(ms)	min(ms)	throughput(TPS)
100	1	0	16	0	75505
500	9	11	97	0	52192
1000	19	24	187	0	50040
2000	39	54	409	0	42551
5000	96	128	1148	0	46367

• teleport/socket

client concurrency	mean(ms)	median(ms)	max(ms)	min(ms)	throughput(TPS)
100	0	0	14	0	225682
500	2	1	24	0	212630
1000	4	3	51	0	180733
2000	8	6	64	0	183351
5000	21	18	651	0	133886

Comparison Test

Environment	Throughputs	Mean Latency	P99 Latency

More Detail

• Profile torch of teleport/socket

svg file

• Heap torch of teleport/socket

svg file

Version

version	status	branch
v4	release	v4
v3	release	v3
v2	release	v2
v1	release	v1

Install

go get -u -f github.com/henrylee2cn/teleport

Feature

• Server and client are peer-to-peer, have the same API method
• Support custom communication protocol
• Support set the size of socket I/O buffer
• Message contains both Header and Body two parts
• Message Header contains metadata in the same format as HTTP header
• Support for customizing Body coding types separately, e.g JSON Protobuf string
• Support push, call, reply and other means of communication
• Support plug-in mechanism, can customize authentication, heartbeat, micro service registration center, statistics, etc.
• Whether server or client, the peer support reboot and shutdown gracefully
• Support reverse proxy
• Detailed log information, support print input and output details
• Supports setting slow operation alarm threshold
• Use I/O multiplexing technology
• Support setting the size of the reading message (if exceed disconnect it)
• Provide the context of the handler
• Client session support automatically redials after disconnection
• Support network list: tcp, tcp4, tcp6, unix, unixpacket and so on
• Provide an operating interface to control the connection file descriptor

Example

server.go

package main

import (
	"fmt"
	"time"

	tp "github.com/henrylee2cn/teleport"
)

func main() {
	// graceful
	go tp.GraceSignal()

	// server peer
	srv := tp.NewPeer(tp.PeerConfig{
		CountTime:   true,
		ListenPort:  9090,
		PrintDetail: true,
	})

	// router
	srv.RouteCall(new(Math))

	// broadcast per 5s
	go func() {
		for {
			time.Sleep(time.Second * 5)
			srv.RangeSession(func(sess tp.Session) bool {
				sess.Push(
					"/push/status",
					fmt.Sprintf("this is a broadcast, server time: %v", time.Now()),
				)
				return true
			})
		}
	}()

	// listen and serve
	srv.ListenAndServe()
}

// Math handler
type Math struct {
	tp.CallCtx
}

// Add handles addition request
func (m *Math) Add(arg *[]int) (int, *tp.Rerror) {
	// test query parameter
	tp.Infof("author: %s", m.Query().Get("author"))
	// add
	var r int
	for _, a := range *arg {
		r += a
	}
	// response
	return r, nil
}

client.go

package main

import (
	"time"

	tp "github.com/henrylee2cn/teleport"
)

func main() {
	// log level
	tp.SetLoggerLevel("ERROR")

	cli := tp.NewPeer(tp.PeerConfig{})
	defer cli.Close()

	cli.RoutePush(new(Push))

	sess, err := cli.Dial(":9090")
	if err != nil {
		tp.Fatalf("%v", err)
	}

	var result int
	rerr := sess.Call("/math/add?author=henrylee2cn",
		[]int{1, 2, 3, 4, 5},
		&result,
	).Rerror()
	if rerr != nil {
		tp.Fatalf("%v", rerr)
	}
	tp.Printf("result: %d", result)

	tp.Printf("wait for 10s...")
	time.Sleep(time.Second * 10)
}

// Push push handler
type Push struct {
	tp.PushCtx
}

// Push handles '/push/status' message
func (p *Push) Status(arg *string) *tp.Rerror {
	tp.Printf("%s", *arg)
	return nil
}

More Examples

Design

Keywords

• Peer: A communication instance may be a server or a client
• Socket: Base on the net.Conn package, add custom package protocol, transfer pipelines and other functions
• Message:* The corresponding structure of the data package content element
• Proto: The protocol interface of message pack/unpack
• Codec: Serialization interface for Body
• XferPipe: Message bytes encoding pipeline, such as compression, encryption, calibration and so on
• XferFilter: A interface to handle message data before transfer
• Plugin: Plugins that cover all aspects of communication
• Session: A connection session, with push, call, reply, close and other methods of operation
• Context: Handle the received or send messages
• Call-Launch: Call data from the peer
• Call-Handle: Handle and reply to the calling of peer
• Push-Launch: Push data to the peer
• Push-Handle: Handle the pushing of peer
• Router: Router that route the response handler by request information(such as a URI)

Data Message

Abstracts the data message(Message Object) of the application layer and is compatible with HTTP message:

Protocol

You can customize your own communication protocol by implementing the interface:

type (
    // Proto pack/unpack protocol scheme of socket message.
    Proto interface {
        // Version returns the protocol's id and name.
        Version() (byte, string)
        // Pack writes the Message into the connection.
        // NOTE: Make sure to write only once or there will be package contamination!
        Pack(Message) error
        // Unpack reads bytes from the connection to the Message.
        // NOTE: Concurrent unsafe!
        Unpack(Message) error
    }
    ProtoFunc func(io.ReadWriter) Proto
)

Next, you can specify the communication protocol in the following ways:

func SetDefaultProtoFunc(ProtoFunc)
type Peer interface {
    ...
    ServeConn(conn net.Conn, protoFunc ...ProtoFunc) Session
    DialContext(ctx context.Context, addr string, protoFunc ...ProtoFunc) (Session, *Rerror)
    Dial(addr string, protoFunc ...ProtoFunc) (Session, *Rerror)
    Listen(protoFunc ...ProtoFunc) error
    ...
}

Default protocol RawProto(Big Endian):

{4 bytes message length}
{1 byte protocol version}
{1 byte transfer pipe length}
{transfer pipe IDs}
# The following is handled data by transfer pipe
{2 bytes sequence length}
{sequence}
{1 byte message type} # e.g. CALL:1; REPLY:2; PUSH:3
{2 bytes URI length}
{URI}
{2 bytes metadata length}
{metadata(urlencoded)}
{1 byte body codec id}
{body}

XferPipe

Transfer filter pipe, handles byte stream of message when transfer.

// XferFilter handles byte stream of message when transfer.
type XferFilter interface {
    // ID returns transfer filter id.
    ID() byte
    // Name returns transfer filter name.
    Name() string
    // OnPack performs filtering on packing.
    OnPack([]byte) ([]byte, error)
    // OnUnpack performs filtering on unpacking.
    OnUnpack([]byte) ([]byte, error)
}
// Get returns transfer filter by id.
func Get(id byte) (XferFilter, error)
// GetByName returns transfer filter by name.
func GetByName(name string) (XferFilter, error)

// XferPipe transfer filter pipe, handlers from outer-most to inner-most.
// NOTE: the length can not be bigger than 255!
type XferPipe struct {
    // Has unexported fields.
}
func NewXferPipe() *XferPipe
func (x *XferPipe) Append(filterID ...byte) error
func (x *XferPipe) AppendFrom(src *XferPipe)
func (x *XferPipe) IDs() []byte
func (x *XferPipe) Len() int
func (x *XferPipe) Names() []string
func (x *XferPipe) OnPack(data []byte) ([]byte, error)
func (x *XferPipe) OnUnpack(data []byte) ([]byte, error)
func (x *XferPipe) Range(callback func(idx int, filter XferFilter) bool)
func (x *XferPipe) Reset()

Codec

The body's codec set.

type Codec interface {
    // ID returns codec id.
    ID() byte
    // Name returns codec name.
    Name() string
    // Marshal returns the encoding of v.
    Marshal(v interface{}) ([]byte, error)
    // Unmarshal parses the encoded data and stores the result
    // in the value pointed to by v.
    Unmarshal(data []byte, v interface{}) error
}

Plugin

Plug-ins during runtime.

type (
    // Plugin plugin background
    Plugin interface {
        Name() string
    }
    // PreNewPeerPlugin is executed before creating peer.
    PreNewPeerPlugin interface {
        Plugin
        PreNewPeer(*PeerConfig, *PluginContainer) error
    }
    ...
)

Usage

Peer(server or client) Demo

// Start a server
var peer1 = tp.NewPeer(tp.PeerConfig{
    ListenPort: 9090, // for server role
})
peer1.Listen()

...

// Start a client
var peer2 = tp.NewPeer(tp.PeerConfig{})
var sess, err = peer2.Dial("127.0.0.1:8080")

Call-Controller-Struct API template

type Aaa struct {
    tp.CallCtx
}
func (x *Aaa) XxZz(arg *<T>) (<T>, *tp.Rerror) {
    ...
    return r, nil
}

• register it to root router:

// register the call route
// HTTP mapping: /aaa/xx_zz
// RPC mapping: Aaa.XxZz
peer.RouteCall(new(Aaa))

// or register the call route
// HTTP mapping: /xx_zz
// RPC mapping: XxZz
peer.RouteCallFunc((*Aaa).XxZz)

Call-Handler-Function API template

func XxZz(ctx tp.CallCtx, arg *<T>) (<T>, *tp.Rerror) {
    ...
    return r, nil
}

• register it to root router:

// register the call route
// HTTP mapping: /xx_zz
// RPC mapping: XxZz
peer.RouteCallFunc(XxZz)

Push-Controller-Struct API template

type Bbb struct {
    tp.PushCtx
}
func (b *Bbb) YyZz(arg *<T>) *tp.Rerror {
    ...
    return nil
}

• register it to root router:

// register the push handler
// HTTP mapping: /bbb/yy_zz
// RPC mapping: Bbb.YyZz
peer.RoutePush(new(Bbb))

// or register the push handler
// HTTP mapping: /yy_zz
// RPC mapping: YyZz
peer.RoutePushFunc((*Bbb).YyZz)

Push-Handler-Function API template

// YyZz register the handler
func YyZz(ctx tp.PushCtx, arg *<T>) *tp.Rerror {
    ...
    return nil
}

• register it to root router:

// register the push handler
// HTTP mapping: /yy_zz
// RPC mapping: YyZz
peer.RoutePushFunc(YyZz)

Unknown-Call-Handler-Function API template

func XxxUnknownCall (ctx tp.UnknownCallCtx) (interface{}, *tp.Rerror) {
    ...
    return r, nil
}

• register it to root router:

// register the unknown call route: /*
peer.SetUnknownCall(XxxUnknownCall)

Unknown-Push-Handler-Function API template

func XxxUnknownPush(ctx tp.UnknownPushCtx) *tp.Rerror {
    ...
    return nil
}

• register it to root router:

// register the unknown push route: /*
peer.SetUnknownPush(XxxUnknownPush)

Plugin Demo

// NewIgnoreCase Returns a ignoreCase plugin.
func NewIgnoreCase() *ignoreCase {
    return &ignoreCase{}
}

type ignoreCase struct{}

var (
    _ tp.PostReadCallHeaderPlugin = new(ignoreCase)
    _ tp.PostReadPushHeaderPlugin = new(ignoreCase)
)

func (i *ignoreCase) Name() string {
    return "ignoreCase"
}

func (i *ignoreCase) PostReadCallHeader(ctx tp.ReadCtx) *tp.Rerror {
    // Dynamic transformation path is lowercase
    ctx.UriObject().Path = strings.ToLower(ctx.UriObject().Path)
    return nil
}

func (i *ignoreCase) PostReadPushHeader(ctx tp.ReadCtx) *tp.Rerror {
    // Dynamic transformation path is lowercase
    ctx.UriObject().Path = strings.ToLower(ctx.UriObject().Path)
    return nil
}

Register above handler and plugin

// add router group
group := peer.SubRoute("test")
// register to test group
group.RouteCall(new(Aaa), NewIgnoreCase())
peer.RouteCallFunc(XxZz, NewIgnoreCase())
group.RoutePush(new(Bbb))
peer.RoutePushFunc(YyZz)
peer.SetUnknownCall(XxxUnknownCall)
peer.SetUnknownPush(XxxUnknownPush)

Config

type PeerConfig struct {
    Network            string        `yaml:"network"              ini:"network"              comment:"Network; tcp, tcp4, tcp6, unix or unixpacket"`
    LocalIP            string        `yaml:"local_ip"             ini:"local_ip"             comment:"Local IP"`
    ListenPort         uint16        `yaml:"listen_port"          ini:"listen_port"          comment:"Listen port; for server role"`
    DefaultDialTimeout time.Duration `yaml:"default_dial_timeout" ini:"default_dial_timeout" comment:"Default maximum duration for dialing; for client role; ns,µs,ms,s,m,h"`
    RedialTimes        int32         `yaml:"redial_times"         ini:"redial_times"         comment:"The maximum times of attempts to redial, after the connection has been unexpectedly broken; for client role"`
	RedialInterval     time.Duration `yaml:"redial_interval"      ini:"redial_interval"      comment:"Interval of redialing each time, default 100ms; for client role; ns,µs,ms,s,m,h"`
    DefaultBodyCodec   string        `yaml:"default_body_codec"   ini:"default_body_codec"   comment:"Default body codec type id"`
    DefaultSessionAge  time.Duration `yaml:"default_session_age"  ini:"default_session_age"  comment:"Default session max age, if less than or equal to 0, no time limit; ns,µs,ms,s,m,h"`
    DefaultContextAge  time.Duration `yaml:"default_context_age"  ini:"default_context_age"  comment:"Default CALL or PUSH context max age, if less than or equal to 0, no time limit; ns,µs,ms,s,m,h"`
    SlowCometDuration  time.Duration `yaml:"slow_comet_duration"  ini:"slow_comet_duration"  comment:"Slow operation alarm threshold; ns,µs,ms,s ..."`
    PrintDetail        bool          `yaml:"print_detail"         ini:"print_detail"         comment:"Is print body and metadata or not"`
    CountTime          bool          `yaml:"count_time"           ini:"count_time"           comment:"Is count cost time or not"`
}

Optimize

• SetMessageSizeLimit sets max message size. If maxSize<=0, set it to max uint32.

  func SetMessageSizeLimit(maxMessageSize uint32)
  

• SetSocketKeepAlive sets whether the operating system should send keepalive messages on the connection.

  func SetSocketKeepAlive(keepalive bool)
  

• SetSocketKeepAlivePeriod sets period between keep alives.

  func SetSocketKeepAlivePeriod(d time.Duration)
  

• SetSocketNoDelay controls whether the operating system should delay message transmission in hopes of sending fewer messages (Nagle's algorithm). The default is true (no delay), meaning that data is sent as soon as possible after a Write.

  func SetSocketNoDelay(_noDelay bool)
  

• SetSocketReadBuffer sets the size of the operating system's receive buffer associated with the connection.

  func SetSocketReadBuffer(bytes int)
  

• SetSocketWriteBuffer sets the size of the operating system's transmit buffer associated with the connection.

  func SetSocketWriteBuffer(bytes int)
  

Extensions

Codec

package	import	description
json	import "github.com/henrylee2cn/teleport/codec"	JSON codec(teleport own)
protobuf	import "github.com/henrylee2cn/teleport/codec"	Protobuf codec(teleport own)
plain	import "github.com/henrylee2cn/teleport/codec"	Plain text codec(teleport own)
form	import "github.com/henrylee2cn/teleport/codec"	Form(url encode) codec(teleport own)

Plugin

package	import	description
auth	import "github.com/henrylee2cn/teleport/plugin/auth"	A auth plugin for verifying peer at the first time
binder	import binder "github.com/henrylee2cn/teleport/plugin/binder"	Parameter Binding Verification for Struct Handler
heartbeat	import heartbeat "github.com/henrylee2cn/teleport/plugin/heartbeat"	A generic timing heartbeat plugin
proxy	import "github.com/henrylee2cn/teleport/plugin/proxy"	A proxy plugin for handling unknown calling or pushing
secure	import secure "github.com/henrylee2cn/teleport/plugin/secure"	Encrypting/decrypting the message body

Protocol

package	import	description
rawproto	import "github.com/henrylee2cn/teleport/proto/rawproto	A fast socket communication protocol(teleport default protocol)
jsonproto	import "github.com/henrylee2cn/teleport/proto/jsonproto"	A JSON socket communication protocol
pbproto	import "github.com/henrylee2cn/teleport/proto/pbproto"	A Protobuf socket communication protocol
thriftproto	import "github.com/henrylee2cn/teleport/proto/thriftproto"	A Thrift communication protocol

Transfer-Filter

package	import	description
gzip	import "github.com/henrylee2cn/teleport/xfer/gzip"	Gzip(teleport own)
md5	import "github.com/henrylee2cn/teleport/xfer/md5"	Provides a integrity check transfer filter

Mixer

package	import	description
multiclient	import "github.com/henrylee2cn/teleport/mixer/multiclient"	Higher throughput client connection pool when transferring large messages (such as downloading files)
websocket	import "github.com/henrylee2cn/teleport/mixer/websocket"	Makes the Teleport framework compatible with websocket protocol as specified in RFC 6455
html	html "github.com/xiaoenai/tp-micro/helper/mod-html"	HTML render for http client

Projects based on Teleport

project	description
TP-Micro	TP-Micro is a simple, powerful micro service framework based on Teleport
Pholcus	Pholcus is a distributed, high concurrency and powerful web crawler software

Business Users

  
  

License

Teleport is under Apache v2 License. See the LICENSE file for the full license text