diff --git a/config.go b/config.go
index 05280e8..b70a1cb 100644
--- a/config.go
+++ b/config.go
@@ -6,8 +6,6 @@ type Config struct {
 	NonStream                    bool
 	SessionWindowSize            int32 // in bytes
 	MTU                          int32 // in bytes
-	InitialConnectionWindowSize  int32 // in packets
-	MaxConnectionWindowSize      int32 // in packets
 	MinConnectionWindowSize      int32 // in packets
 	MaxAckSeqListSize            int32
 	FlushInterval                int32 // in millisecond
@@ -24,8 +22,6 @@ var DefaultConfig = Config{
 	NonStream:                    false,
 	SessionWindowSize:            4 << 20,
 	MTU:                          1024,
-	InitialConnectionWindowSize:  16,
-	MaxConnectionWindowSize:      256,
 	MinConnectionWindowSize:      1,
 	MaxAckSeqListSize:            32,
 	FlushInterval:                10,
diff --git a/connection.go b/connection.go
index 040732c..1070fe9 100644
--- a/connection.go
+++ b/connection.go
@@ -16,7 +16,7 @@ type Connection struct {
 	session          *Session
 	localClientID    string
 	remoteClientID   string
-	windowSize       uint32
+	windowSize       float64
 	sendWindowUpdate chan struct{}
 
 	sync.RWMutex
@@ -26,12 +26,12 @@ type Connection struct {
 	retransmissionTimeout time.Duration
 }
 
-func NewConnection(session *Session, localClientID, remoteClientID string) (*Connection, error) {
+func NewConnection(session *Session, localClientID, remoteClientID string, initialWindowSize float64) (*Connection, error) {
 	conn := &Connection{
 		session:               session,
 		localClientID:         localClientID,
 		remoteClientID:        remoteClientID,
-		windowSize:            uint32(session.config.InitialConnectionWindowSize),
+		windowSize:            initialWindowSize,
 		retransmissionTimeout: time.Duration(session.config.InitialRetransmissionTimeout) * time.Millisecond,
 		sendWindowUpdate:      make(chan struct{}, 1),
 		timeSentSeq:           make(map[uint32]time.Time),
@@ -76,10 +76,7 @@ func (conn *Connection) ReceiveAck(sequenceID uint32, isSentByMe bool) {
 	}
 
 	if _, ok := conn.resentSeq[sequenceID]; !ok {
-		conn.windowSize++
-		if conn.windowSize > uint32(conn.session.config.MaxConnectionWindowSize) {
-			conn.windowSize = uint32(conn.session.config.MaxConnectionWindowSize)
-		}
+		conn.setWindowSize(conn.windowSize + 1)
 	}
 
 	if isSentByMe {
@@ -100,7 +97,7 @@ func (conn *Connection) ReceiveAck(sequenceID uint32, isSentByMe bool) {
 }
 
 func (conn *Connection) waitForSendWindow(ctx context.Context) error {
-	for conn.SendWindowUsed() >= conn.windowSize {
+	for float64(conn.SendWindowUsed()) >= conn.windowSize {
 		select {
 		case <-conn.sendWindowUpdate:
 		case <-time.After(maxWait):
@@ -163,6 +160,13 @@ func (conn *Connection) tx() error {
 				return err
 			}
 			log.Println(err)
+
+			// reduce window size
+			conn.Lock()
+			conn.setWindowSize(conn.windowSize / 2)
+			conn.Unlock()
+			conn.session.updateConnWindowSize()
+
 			select {
 			case conn.session.resendChan <- seq:
 				seq = 0
@@ -259,6 +263,7 @@ func (conn *Connection) checkTimeout() error {
 
 		threshold := time.Now().Add(-conn.retransmissionTimeout)
 		conn.Lock()
+		newResend := false
 		for seq, t := range conn.timeSentSeq {
 			if _, ok := conn.resentSeq[seq]; ok {
 				continue
@@ -267,15 +272,23 @@ func (conn *Connection) checkTimeout() error {
 				select {
 				case conn.session.resendChan <- seq:
 					conn.resentSeq[seq] = struct{}{}
-					conn.windowSize /= 2
-					if conn.windowSize < uint32(conn.session.config.MinConnectionWindowSize) {
-						conn.windowSize = uint32(conn.session.config.MinConnectionWindowSize)
-					}
+					conn.setWindowSize(conn.windowSize / 2)
+					newResend = true
 				case <-conn.session.context.Done():
 					return conn.session.context.Err()
 				}
 			}
 		}
 		conn.Unlock()
+		if newResend {
+			conn.session.updateConnWindowSize()
+		}
+	}
+}
+
+func (conn *Connection) setWindowSize(n float64) {
+	if n < float64(conn.session.config.MinConnectionWindowSize) {
+		n = float64(conn.session.config.MinConnectionWindowSize)
 	}
+	conn.windowSize = n
 }
diff --git a/go.mod b/go.mod
index b46224c..ce38a84 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,6 @@ go 1.13
 require (
 	github.com/golang/protobuf v1.4.1
 	github.com/imdario/mergo v0.3.8
-	github.com/stretchr/testify v1.4.0 // indirect
+	github.com/nknorg/mockconn-go v0.0.0-20230125231524-d664e728352a
 	gopkg.in/yaml.v2 v2.2.8 // indirect
 )
diff --git a/go.sum b/go.sum
index 1d4ca43..4969901 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,6 @@
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 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=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
 github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
 github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
@@ -13,11 +14,19 @@ github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/imdario/mergo v0.3.8 h1:CGgOkSJeqMRmt0D9XLWExdT4m4F1vd3FV3VPt+0VxkQ=
 github.com/imdario/mergo v0.3.8/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
+github.com/nknorg/mockconn-go v0.0.0-20230125231524-d664e728352a h1:/SGWoUyHDfOgF1G/BQ9x9h1hVj3+mw150Aw4NlWLgtg=
+github.com/nknorg/mockconn-go v0.0.0-20230125231524-d664e728352a/go.mod h1:/SvBORYxt9wlm8ZbaEFEri6ooOSDcU3ovU0L2eRRdS4=
 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/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
-github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
+github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
+golang.org/x/time v0.3.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
@@ -29,6 +38,8 @@ google.golang.org/protobuf v1.22.0 h1:cJv5/xdbk1NnMPR1VP9+HU6gupuG9MLBoH1r6RHZ2M
 google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/session.go b/session.go
index a621be8..6c55fc4 100644
--- a/session.go
+++ b/session.go
@@ -61,6 +61,8 @@ type Session struct {
 	bytesReadSentTime   time.Time
 	bytesReadUpdateTime time.Time
 	remoteBytesRead     uint64
+
+	sendWindowPacketCount float64 // Equal to sendWindowsSize / sendMtu
 }
 
 type SendWithFunc func(localClientID, remoteClientID string, buf []byte, writeTimeout time.Duration) error
@@ -72,26 +74,27 @@ func NewSession(localAddr, remoteAddr net.Addr, localClientIDs, remoteClientIDs
 	}
 
 	session := &Session{
-		config:              config,
-		localAddr:           localAddr,
-		remoteAddr:          remoteAddr,
-		localClientIDs:      localClientIDs,
-		remoteClientIDs:     remoteClientIDs,
-		sendWith:            sendWith,
-		sendWindowSize:      uint32(config.SessionWindowSize),
-		recvWindowSize:      uint32(config.SessionWindowSize),
-		sendMtu:             uint32(config.MTU),
-		recvMtu:             uint32(config.MTU),
-		sendWindowStartSeq:  MinSequenceID,
-		sendWindowEndSeq:    MinSequenceID,
-		recvWindowStartSeq:  MinSequenceID,
-		recvWindowUsed:      0,
-		bytesWrite:          0,
-		bytesRead:           0,
-		bytesReadSentTime:   time.Now(),
-		bytesReadUpdateTime: time.Now(),
-		remoteBytesRead:     0,
-		onAccept:            make(chan struct{}, 1),
+		config:                config,
+		localAddr:             localAddr,
+		remoteAddr:            remoteAddr,
+		localClientIDs:        localClientIDs,
+		remoteClientIDs:       remoteClientIDs,
+		sendWith:              sendWith,
+		sendWindowSize:        uint32(config.SessionWindowSize),
+		recvWindowSize:        uint32(config.SessionWindowSize),
+		sendMtu:               uint32(config.MTU),
+		recvMtu:               uint32(config.MTU),
+		sendWindowStartSeq:    MinSequenceID,
+		sendWindowEndSeq:      MinSequenceID,
+		recvWindowStartSeq:    MinSequenceID,
+		recvWindowUsed:        0,
+		bytesWrite:            0,
+		bytesRead:             0,
+		bytesReadSentTime:     time.Now(),
+		bytesReadUpdateTime:   time.Now(),
+		remoteBytesRead:       0,
+		onAccept:              make(chan struct{}, 1),
+		sendWindowPacketCount: float64(config.SessionWindowSize) / float64(config.MTU),
 	}
 
 	session.context, session.cancel = context.WithCancel(context.Background())
@@ -256,6 +259,8 @@ func (session *Session) ReceiveWith(localClientID, remoteClientID string, buf []
 				}
 			}
 		}
+
+		session.updateConnWindowSize()
 	}
 
 	if isEstablished && packet.BytesRead > session.remoteBytesRead {
@@ -519,6 +524,7 @@ func (session *Session) handleHandshakePacket(packet *pb.Packet) error {
 	if packet.Mtu < session.sendMtu {
 		session.sendMtu = packet.Mtu
 	}
+	session.sendWindowPacketCount = float64(session.sendWindowSize) / float64(session.sendMtu)
 
 	if len(packet.ClientIds) == 0 {
 		return ErrInvalidPacket
@@ -528,9 +534,10 @@ func (session *Session) handleHandshakePacket(packet *pb.Packet) error {
 		n = len(packet.ClientIds)
 	}
 
+	initialWindowSize := session.sendWindowPacketCount / float64(n)
 	connections := make(map[string]*Connection, n)
 	for i := 0; i < n; i++ {
-		conn, err := NewConnection(session, session.localClientIDs[i], packet.ClientIds[i])
+		conn, err := NewConnection(session, session.localClientIDs[i], packet.ClientIds[i], initialWindowSize)
 		if err != nil {
 			return err
 		}
@@ -540,7 +547,7 @@ func (session *Session) handleHandshakePacket(packet *pb.Packet) error {
 
 	session.remoteClientIDs = packet.ClientIds
 	session.sendChan = make(chan uint32)
-	session.resendChan = make(chan uint32, session.config.MaxConnectionWindowSize*int32(n))
+	session.resendChan = make(chan uint32, int(session.sendWindowPacketCount)+n)
 	session.sendWindowUpdate = make(chan struct{}, 1)
 	session.recvDataUpdate = make(chan struct{}, 1)
 	session.sendBuffer = make([]byte, 0, session.sendMtu)
@@ -943,3 +950,22 @@ func (session *Session) SetWriteDeadline(t time.Time) error {
 func (session *Session) SetLinger(t int32) {
 	session.config.Linger = t
 }
+
+func (session *Session) updateConnWindowSize() {
+	totalSize := 0.0
+	for _, conn := range session.connections {
+		conn.RLock()
+		totalSize += float64(conn.windowSize)
+		conn.RUnlock()
+	}
+	if totalSize <= 0 {
+		return
+	}
+
+	for _, conn := range session.connections {
+		conn.Lock()
+		n := session.sendWindowPacketCount * (conn.windowSize / totalSize)
+		conn.setWindowSize(n)
+		conn.Unlock()
+	}
+}
diff --git a/test/exception_test.go b/test/exception_test.go
new file mode 100644
index 0000000..d311865
--- /dev/null
+++ b/test/exception_test.go
@@ -0,0 +1,267 @@
+package test
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	mockconn "github.com/nknorg/mockconn-go"
+)
+
+// go test -v -run=TestCloseRemoteRead
+func TestCloseRemoteRead(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	tc := &TestCase{id: id, name: "Two connections, the second one will close remote read in 2 seconds", bytesToSend: bytesToSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	baseConf.WriteTimeout = 3 * time.Second
+	baseConf.ReadTimeout = 3 * time.Second
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = baseConf
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = closeRemoteRead(tc)
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+// go test -v -run=TestCloseRemoteWrite
+func TestCloseRemoteWrite(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	tc := &TestCase{id: id, name: "Two connections, the second one will close write in 2 seconds", bytesToSend: bytesToSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	baseConf.WriteTimeout = 3 * time.Second
+	baseConf.ReadTimeout = 3 * time.Second
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = baseConf
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = closeRemoteWrite(tc)
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+// go test -v -run=TestCloseLocalRead
+func TestCloseLocalRead(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	tc := &TestCase{id: id, name: "Two connections, the second one will close remote read in 2 seconds", bytesToSend: bytesToSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	baseConf.WriteTimeout = 3 * time.Second
+	baseConf.ReadTimeout = 3 * time.Second
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = baseConf
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = closeLocalRead(tc)
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+// go test -v -run=TestCloseLocalWrite
+func TestCloseLocalWrite(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	tc := &TestCase{id: id, name: "Two connections, the second one will close write in 2 seconds", bytesToSend: bytesToSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	baseConf.WriteTimeout = 3 * time.Second
+	baseConf.ReadTimeout = 3 * time.Second
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = baseConf
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = closeLocalWrite(tc)
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+func closeRemoteRead(tc *TestCase) *TestCase {
+	fmt.Printf("\n>>>>>> Case %v, %v\n", id, tc.name)
+
+	var ts TestSession
+	ts.Create(tc.mockConfigs, tc.numClients)
+	ts.DialUp()
+
+	writeChan := make(chan int64, 3)
+	readChan := make(chan int64, 3)
+	go ts.write(ts.localSess, tc.bytesToSend, writeChan)
+	go ts.read(ts.remoteSess, readChan)
+
+	time.Sleep(2 * time.Second)
+	ts.CloseOneConnectionRead(ts.remoteSess, "1")
+
+	bytesReceived := <-readChan
+	count := <-readChan
+	ms := <-readChan
+
+	speed := float64(bytesReceived) / (1 << 20) / (float64(ms) / 1000.0)
+	throughput := float64(count) / (float64(ms) / 1000.0)
+
+	fmt.Printf("\n%v received %v bytes at %.3f MB/s, throughput:%.1f packets/s, duration: %v ms \n",
+		ts.remoteSess.LocalAddr(), bytesReceived, speed, throughput, ms)
+
+	tc.duration = ms
+	tc.speed = speed
+
+	return tc
+}
+
+// go test -v -run=TestCloseAndOpenRemoteRead
+func TestCloseAndOpenRemoteRead(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	toSend := 80 << 20
+	tc := &TestCase{id: id, name: "Two connections, the second one will close remote read in 2 seconds", bytesToSend: toSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	baseConf.WriteTimeout = 3 * time.Second
+	baseConf.ReadTimeout = 3 * time.Second
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = baseConf
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = pauseAndResumeRemoteRead(tc)
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+func pauseAndResumeRemoteRead(tc *TestCase) *TestCase {
+	fmt.Printf("\n>>>>>> Case %v, %v\n", id, tc.name)
+
+	var ts TestSession
+	ts.Create(tc.mockConfigs, tc.numClients)
+	ts.DialUp()
+
+	writeChan := make(chan int64, 3)
+	readChan := make(chan int64, 3)
+	go ts.write(ts.localSess, tc.bytesToSend, writeChan)
+	go ts.read(ts.remoteSess, readChan)
+
+	time.Sleep(5 * time.Second)
+	ts.PauseOneConnectionRead(ts.remoteSess, "1")
+	time.Sleep(1 * time.Second)
+	ts.ResumeOneConnectionRead(ts.remoteSess, "1")
+
+	bytesReceived := <-readChan
+	count := <-readChan
+	ms := <-readChan
+
+	speed := float64(bytesReceived) / (1 << 20) / (float64(ms) / 1000.0)
+	throughput := float64(count) / (float64(ms) / 1000.0)
+
+	fmt.Printf("\n%v received %v bytes at %.3f MB/s, throughput:%.1f packets/s, duration: %v ms \n",
+		ts.remoteSess.LocalAddr(), bytesReceived, speed, throughput, ms)
+
+	tc.duration = ms
+	tc.speed = speed
+
+	return tc
+}
+
+func closeLocalRead(tc *TestCase) *TestCase {
+	fmt.Printf("\n>>>>>> Case %v, %v\n", id, tc.name)
+
+	var ts TestSession
+	ts.Create(tc.mockConfigs, tc.numClients)
+	ts.DialUp()
+
+	writeChan := make(chan int64, 3)
+	readChan := make(chan int64, 3)
+	go ts.write(ts.localSess, tc.bytesToSend, writeChan)
+	go ts.read(ts.remoteSess, readChan)
+
+	time.Sleep(2 * time.Second)
+	ts.CloseOneConnectionRead(ts.remoteSess, "1")
+
+	bytesReceived := <-readChan
+	count := <-readChan
+	ms := <-readChan
+
+	speed := float64(bytesReceived) / (1 << 20) / (float64(ms) / 1000.0)
+	throughput := float64(count) / (float64(ms) / 1000.0)
+
+	fmt.Printf("\n%v received %v bytes at %.3f MB/s, throughput:%.1f packets/s, duration: %v ms \n",
+		ts.remoteSess.LocalAddr(), bytesReceived, speed, throughput, ms)
+
+	tc.duration = ms
+	tc.speed = speed
+
+	return tc
+}
+
+func closeRemoteWrite(tc *TestCase) *TestCase {
+	fmt.Printf("\n>>>>>> Case %v, %v\n", id, tc.name)
+
+	var ts TestSession
+	ts.Create(tc.mockConfigs, tc.numClients)
+	ts.DialUp()
+
+	writeChan := make(chan int64, 3)
+	readChan := make(chan int64, 3)
+	go ts.write(ts.localSess, tc.bytesToSend, writeChan)
+	go ts.read(ts.remoteSess, readChan)
+
+	time.Sleep(2 * time.Second)
+	ts.CloseOneConnectionWrite(ts.remoteSess, "1")
+
+	bytesReceived := <-readChan
+	count := <-readChan
+	ms := <-readChan
+
+	speed := float64(bytesReceived) / (1 << 20) / (float64(ms) / 1000.0)
+	throughput := float64(count) / (float64(ms) / 1000.0)
+
+	fmt.Printf("\n%v received %v bytes at %.3f MB/s, throughput:%.1f packets/s, duration: %v ms \n",
+		ts.remoteSess.LocalAddr(), bytesReceived, speed, throughput, ms)
+
+	tc.duration = ms
+	tc.speed = speed
+
+	return tc
+}
+
+func closeLocalWrite(tc *TestCase) *TestCase {
+	fmt.Printf("\n>>>>>> Case %v, %v\n", id, tc.name)
+
+	var ts TestSession
+	ts.Create(tc.mockConfigs, tc.numClients)
+	ts.DialUp()
+
+	writeChan := make(chan int64, 3)
+	readChan := make(chan int64, 3)
+	go ts.write(ts.localSess, tc.bytesToSend, writeChan)
+	go ts.read(ts.remoteSess, readChan)
+
+	time.Sleep(2 * time.Second)
+	ts.CloseOneConnectionWrite(ts.localSess, "1")
+
+	bytesReceived := <-readChan
+	count := <-readChan
+	ms := <-readChan
+
+	speed := float64(bytesReceived) / (1 << 20) / (float64(ms) / 1000.0)
+	throughput := float64(count) / (float64(ms) / 1000.0)
+
+	fmt.Printf("\n%v received %v bytes at %.3f MB/s, throughput:%.1f packets/s, duration: %v ms \n",
+		ts.remoteSess.LocalAddr(), bytesReceived, speed, throughput, ms)
+
+	tc.duration = ms
+	tc.speed = speed
+
+	return tc
+}
diff --git a/test/latency_test.go b/test/latency_test.go
new file mode 100644
index 0000000..9a66517
--- /dev/null
+++ b/test/latency_test.go
@@ -0,0 +1,34 @@
+package test
+
+import (
+	"fmt"
+	"testing"
+
+	mockconn "github.com/nknorg/mockconn-go"
+)
+
+// go test -v -run=TestLowAndHighLatency
+func TestLowAndHighLatency(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	conf1 := baseConf
+	conf1.Latency = lowLatency
+	conf2 := baseConf
+	conf2.Latency = highLatency
+	toSend := 80 << 20
+
+	tc := &TestCase{id: id, name: fmt.Sprintf("Two clients same throughput %v packets/s, low latency %v, high latency %v",
+		conf1.Throughput, conf1.Latency, conf2.Latency), bytesToSend: toSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	tc.mockConfigs["0"] = conf1
+	tc.mockConfigs["1"] = conf2
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = run(tc, "low_and_high_latency")
+	testResult = append(testResult, tc)
+
+	PrintResult(testResult)
+}
diff --git a/test/loss_test.go b/test/loss_test.go
new file mode 100644
index 0000000..8abfbee
--- /dev/null
+++ b/test/loss_test.go
@@ -0,0 +1,34 @@
+package test
+
+import (
+	"fmt"
+	"testing"
+
+	mockconn "github.com/nknorg/mockconn-go"
+)
+
+// go test -v -run=TestLowAndHighLoss
+func TestLowAndHighLoss(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	conf1, conf2 := baseConf, baseConf
+	conf1.Loss = 0.01
+	conf2.Loss = 0.1
+	toSend := 8 << 20
+
+	tc := &TestCase{id: id, name: fmt.Sprintf("Base case with two connections with low loss %v, high loss %v",
+		conf1.Loss, conf2.Loss), bytesToSend: toSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = conf1
+	tc.mockConfigs["2"] = conf2
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = run(tc, "Base_and_low_and_high_loss")
+	testResult = append(testResult, tc)
+
+	PrintResult(testResult)
+}
diff --git a/test/pub_test.go b/test/pub_test.go
new file mode 100644
index 0000000..e5427e4
--- /dev/null
+++ b/test/pub_test.go
@@ -0,0 +1,75 @@
+package test
+
+import (
+	"fmt"
+	"time"
+
+	mockconn "github.com/nknorg/mockconn-go"
+)
+
+type TestCase struct {
+	id          int
+	name        string
+	numClients  int
+	bytesToSend int
+	mockConfigs map[string]mockconn.ConnConfig // map localClientID to mock config
+	duration    int64
+	speed       float64
+}
+
+const (
+	lowThroughput  = 128  // packets / second
+	midThroughput  = 1024 // packets / second
+	highThroughput = 2048 // packets / second
+
+	lowLatency  = 50 * time.Millisecond  // ms
+	highLatency = 500 * time.Millisecond //ms
+	lowLoss     = 0.01                   // 1% loss
+	highLoss    = 0.1                    // 10% loss
+
+	bytesToSend = 8 << 20
+)
+
+var baseConf = mockconn.ConnConfig{Addr1: "Alice", Addr2: "Bob", Throughput: midThroughput, Latency: lowLatency,
+	WriteTimeout: 3 * time.Second, ReadTimeout: 3 * time.Second}
+
+var testResult []*TestCase
+var id = 0
+
+func run(tc *TestCase, imgName string) *TestCase {
+	fmt.Printf("\n>>>>>> Case %v, %v\n", id, tc.name)
+
+	var ts TestSession
+	ts.Create(tc.mockConfigs, tc.numClients)
+	ts.DialUp()
+
+	writeChan := make(chan int64, 3)
+	readChan := make(chan int64, 3)
+	go ts.write(ts.localSess, tc.bytesToSend, writeChan)
+	go ts.read(ts.remoteSess, readChan)
+
+	bytesReceived := <-readChan
+	count := <-readChan
+	ms := <-readChan
+
+	speed := float64(bytesReceived) / (1 << 20) / (float64(ms) / 1000.0)
+	throughput := float64(count) / (float64(ms) / 1000.0)
+
+	fmt.Printf("\n%v received %v bytes at %.3f MB/s, throughput:%.1f packets/s, duration: %v ms \n",
+		ts.remoteSess.LocalAddr(), bytesReceived, speed, throughput, ms)
+
+	tc.duration = ms
+	tc.speed = speed
+
+	return tc
+}
+
+// Print test result to compare previous version and new version
+func PrintResult(testResult []*TestCase) {
+	fmt.Printf("\nid \tconn \tspeed \t\tduration \ttest case description\n")
+	for _, tc := range testResult {
+		fmt.Printf("%v \t%v \t%.3f MB/s \t%v ms \t%v \n",
+			tc.id, tc.numClients, tc.speed, tc.duration, tc.name)
+	}
+	fmt.Println()
+}
diff --git a/test/testsession.go b/test/testsession.go
new file mode 100644
index 0000000..d9cca64
--- /dev/null
+++ b/test/testsession.go
@@ -0,0 +1,288 @@
+package test
+
+import (
+	"context"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"log"
+	"net"
+	"strconv"
+	"time"
+
+	mockconn "github.com/nknorg/mockconn-go"
+	ncp "github.com/nknorg/ncp-go"
+)
+
+type TestSession struct {
+	localSess   *ncp.Session
+	remoteSess  *ncp.Session
+	mockConfigs map[string]mockconn.ConnConfig // map clinetId to mockConfig
+	numClients  int
+
+	localConns  map[string]net.Conn
+	remoteConns map[string]net.Conn
+
+	closeChan chan struct{} // indicate this session is closed
+}
+
+func (ts *TestSession) Create(confs map[string]mockconn.ConnConfig, numClients int) {
+	ts.mockConfigs = confs
+
+	ts.localConns = make(map[string]net.Conn)
+	ts.remoteConns = make(map[string]net.Conn)
+	ts.closeChan = make(chan struct{})
+	ts.numClients = numClients
+
+	clientIDs := make([]string, 0)
+	for i := 0; i < numClients; i++ {
+		clientId := strconv.Itoa(i)
+		clientIDs = append(clientIDs, clientId)
+
+		conf := confs[clientId]
+		localConn, remoteConn, err := mockconn.NewMockConn(&conf)
+
+		if err == nil {
+			ts.localConns[clientId] = localConn
+			ts.remoteConns[clientId] = remoteConn
+		} else {
+			log.Fatalln("mockconn.NewMockConn err:", err)
+		}
+	}
+
+	sessionConfig := &ncp.Config{}
+	localSess, _ := ncp.NewSession(mockconn.NewClientAddr("Alice"), mockconn.NewClientAddr("Bob"), clientIDs, clientIDs,
+		func(localClientID, remoteClientID string, buf []byte, writeTimeout time.Duration) (err error) {
+			netconn, ok := ts.localConns[localClientID]
+			if ok {
+				_, err = netconn.Write(buf)
+			} else {
+				err = errors.New("sendwith can't get connection")
+			}
+			return err
+		}, sessionConfig)
+
+	remoteSess, _ := ncp.NewSession(mockconn.NewClientAddr("Bob"), mockconn.NewClientAddr("Alice"), clientIDs, clientIDs,
+		func(localClientID, remoteClientID string, buf []byte, writeTimeout time.Duration) (err error) {
+			conn, ok := ts.remoteConns[localClientID]
+			if ok {
+				_, err = conn.Write(buf)
+			} else {
+				err = errors.New("sendwith can't get connection")
+			}
+			return err
+		}, sessionConfig)
+
+	ts.localSess = localSess
+	ts.remoteSess = remoteSess
+
+	go func() {
+		for clientId, conn := range ts.localConns {
+			go ts.networkRead(ts.localSess, conn, clientId)
+		}
+		for clientId, conn := range ts.remoteConns {
+			go ts.networkRead(ts.remoteSess, conn, clientId)
+		}
+	}()
+}
+
+func (ts *TestSession) networkRead(s *ncp.Session, conn net.Conn, clientId string) {
+	count := 0
+	var zeroTime time.Time
+	var t1 time.Time
+
+loop:
+	for {
+		b := make([]byte, 1500)
+		n, err := conn.Read(b)
+		if err != nil {
+			time.Sleep(50 * time.Millisecond)
+			// fmt.Printf("testsession.networkRead session %v conn %v conn.Read error: %v\n", s.LocalAddr(), clientId, err)
+			continue
+		}
+
+		if t1 == zeroTime {
+			t1 = time.Now()
+		}
+
+		err = s.ReceiveWith(clientId, clientId, b[:n])
+		if err != nil {
+			fmt.Printf("testsession.networkRead session %v conn %v s.ReceiveWith error: %v\n", s.LocalAddr(), clientId, err)
+			time.Sleep(10 * time.Millisecond)
+		}
+		count++
+
+		select {
+		case <-ts.closeChan:
+			break loop
+		default:
+		}
+	}
+
+	fmt.Printf("TestSession.networkRead session %v conn %v exit read, read times: %v\n", s.LocalAddr().String(), clientId, count)
+}
+
+func (ts *TestSession) DialUp() {
+	go func() {
+		for {
+			time.Sleep(200 * time.Millisecond)
+			err := ts.remoteSess.Accept()
+			if err == nil {
+				break
+			}
+		}
+	}()
+
+	ctx := context.Background()
+	err := ts.localSess.Dial(ctx)
+	if err != nil {
+		fmt.Printf("ts.localSess.Dial error: %v\n", err)
+		return
+	}
+}
+
+func (ts *TestSession) write(s *ncp.Session, numBytes int, writeChan chan int64) error {
+	b := make([]byte, 4)
+	binary.LittleEndian.PutUint32(b, uint32(numBytes))
+	_, err := s.Write(b)
+	if err != nil {
+		return err
+	}
+
+	var bytesSent, count int64
+	t1 := time.Now()
+	for i := 0; i < numBytes/1024; i++ {
+		b := make([]byte, 1024)
+		n, err := s.Write(b)
+		if err != nil {
+			log.Fatal("testsession.write s.Write err ", err)
+			return err
+		}
+		if n != len(b) {
+			return fmt.Errorf("sent %d instead of %d bytes", n, len(b))
+		}
+		bytesSent += int64(len(b))
+		count++
+	}
+	dur := time.Since(t1)
+
+	writeChan <- bytesSent
+	writeChan <- count
+	writeChan <- dur.Milliseconds()
+
+	return nil
+}
+
+func (ts *TestSession) read(s *ncp.Session, readChan chan int64) error {
+	b := make([]byte, 4)
+	n := 0
+	for {
+		m, err := s.Read(b[n:])
+		if err != nil {
+			return err
+		}
+		n += m
+		if n >= 4 {
+			break
+		}
+	}
+	numBytes := int(binary.LittleEndian.Uint32(b))
+
+	b = make([]byte, 1024)
+	var bytesReceived, count int64
+	t1 := time.Now()
+	for {
+		n, err := s.Read(b)
+		if err != nil {
+			log.Fatal("testsession.read s.Read err ", err)
+			return err
+		}
+		bytesReceived += int64(n)
+		count++
+
+		if bytesReceived == int64(numBytes) {
+			dur := time.Since(t1)
+			readChan <- bytesReceived
+			readChan <- count
+			readChan <- dur.Milliseconds()
+			return nil
+		}
+	}
+}
+
+func (ts *TestSession) Close() {
+	for _, conn := range ts.localConns {
+		conn.Close()
+	}
+	for _, conn := range ts.remoteConns {
+		conn.Close()
+	}
+	ts.localSess.Close()
+	ts.remoteSess.Close()
+
+	<-ts.closeChan
+	<-ts.closeChan
+}
+
+func (ts *TestSession) CloseOneConnectionRead(sess *ncp.Session, clientId string) error {
+	var conn net.Conn
+	if sess == ts.remoteSess {
+		conn = ts.remoteConns[clientId]
+	} else {
+		conn = ts.localConns[clientId]
+	}
+
+	nc := conn.(*mockconn.NetConn)
+	fmt.Printf("session %v conn %v is to close reading\n", sess.LocalAddr(), clientId)
+	return nc.CloseRead()
+}
+
+func (ts *TestSession) PauseOneConnectionRead(sess *ncp.Session, clientId string) {
+	var conn net.Conn
+	if sess == ts.remoteSess {
+		conn = ts.remoteConns[clientId]
+	} else {
+		conn = ts.localConns[clientId]
+	}
+
+	nc := conn.(*mockconn.NetConn)
+	nc.PauseRead()
+	fmt.Printf("session %v conn %v is to pause reading\n", sess.LocalAddr(), clientId)
+}
+
+func (ts *TestSession) ResumeOneConnectionRead(sess *ncp.Session, clientId string) {
+	var conn net.Conn
+	if sess == ts.remoteSess {
+		conn = ts.remoteConns[clientId]
+	} else {
+		conn = ts.localConns[clientId]
+	}
+
+	nc := conn.(*mockconn.NetConn)
+	nc.ResumeRead()
+	fmt.Printf("session %v conn %v is to resume reading\n", sess.LocalAddr(), clientId)
+}
+
+func (ts *TestSession) OpenOneConnectionRead(sess *ncp.Session, clientId string) error {
+	var conn net.Conn
+	if sess == ts.remoteSess {
+		conn = ts.remoteConns[clientId]
+	} else {
+		conn = ts.localConns[clientId]
+	}
+
+	nc := conn.(*mockconn.NetConn)
+	fmt.Printf("session %v conn %v is to open read\n", sess.LocalAddr(), clientId)
+	return nc.SetReadDeadline(time.Time{})
+}
+
+func (ts *TestSession) CloseOneConnectionWrite(sess *ncp.Session, clientId string) error {
+	var conn net.Conn
+	if sess == ts.remoteSess {
+		conn = ts.remoteConns[clientId]
+	} else {
+		conn = ts.localConns[clientId]
+	}
+	nc := conn.(*mockconn.NetConn)
+	return nc.CloseWrite()
+}
diff --git a/test/throughput_test.go b/test/throughput_test.go
new file mode 100644
index 0000000..cff4de0
--- /dev/null
+++ b/test/throughput_test.go
@@ -0,0 +1,170 @@
+package test
+
+import (
+	"fmt"
+	"testing"
+
+	mockconn "github.com/nknorg/mockconn-go"
+)
+
+// go test -v -run=TestBaseClient
+func TestBaseClient(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	tc := &TestCase{id: id, name: fmt.Sprintf("Base case, one client throughput %v packets/s, latency %v, loss %v",
+		baseConf.Throughput, baseConf.Latency, baseConf.Loss), bytesToSend: bytesToSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	tc.mockConfigs["0"] = baseConf
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = run(tc, "base")
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+// go test -v -run=TestBaseAndLowTpHighLat
+func TestBaseAndLowTpHighLat(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	lowTpHighLatConf := baseConf
+	lowTpHighLatConf.Throughput = lowThroughput
+	lowTpHighLatConf.Latency = highLatency
+	tc := &TestCase{id: id, name: fmt.Sprintf("Append 1 client throughput %v packets/s, latency %v, loss %v to base case",
+		lowTpHighLatConf.Throughput, lowTpHighLatConf.Latency, lowTpHighLatConf.Loss), bytesToSend: bytesToSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = lowTpHighLatConf
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = run(tc, "base_and_1_low_tp")
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+// go test -v -run=TestBaseAnd2LowTpHighLat
+func TestBaseAnd2LowTpHighLat(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	lowTpHighLatConf := baseConf
+	lowTpHighLatConf.Throughput = lowThroughput
+	lowTpHighLatConf.Latency = highLatency
+	tc := &TestCase{id: id, name: fmt.Sprintf("Append 2 clients throughput %v packets/s, latency %v, loss %v to base case",
+		lowTpHighLatConf.Throughput, lowTpHighLatConf.Latency, lowTpHighLatConf.Loss), bytesToSend: bytesToSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = lowTpHighLatConf
+	tc.mockConfigs["2"] = lowTpHighLatConf
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = run(tc, "base_and_2_low_tp")
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+// go test -v -run=TestBaseAnd3LowTpHighLat
+func TestBaseAnd3LowTpHighLat(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	lowTpHighLatConf := baseConf
+	lowTpHighLatConf.Throughput = lowThroughput
+	lowTpHighLatConf.Latency = highLatency
+	tc := &TestCase{id: id, name: fmt.Sprintf("Append 3 clients throughput %v packets/s, latency %v, loss %v to base case",
+		lowTpHighLatConf.Throughput, lowTpHighLatConf.Latency, lowTpHighLatConf.Loss), bytesToSend: bytesToSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = lowTpHighLatConf
+	tc.mockConfigs["2"] = lowTpHighLatConf
+	tc.mockConfigs["3"] = lowTpHighLatConf
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = run(tc, "base_and_3_low_tp")
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+// go test -v -run=TestBaseAnd3LowTpHighLat
+func TestBaseAnd4LowTpHighLat(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	lowTpHighLatConf := baseConf
+	lowTpHighLatConf.Throughput = lowThroughput
+	lowTpHighLatConf.Latency = highLatency
+	tc := &TestCase{id: id, name: fmt.Sprintf("Append 4 clients throughput %v packets/s, latency %v, loss %v to base case",
+		lowTpHighLatConf.Throughput, lowTpHighLatConf.Latency, lowTpHighLatConf.Loss), bytesToSend: bytesToSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = lowTpHighLatConf
+	tc.mockConfigs["2"] = lowTpHighLatConf
+	tc.mockConfigs["3"] = lowTpHighLatConf
+	tc.mockConfigs["4"] = lowTpHighLatConf
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = run(tc, "base_and_4_low_tp")
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+// go test -v -run=TestBaseAnd3DifferTp
+func TestBaseAnd3DifferTp(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	low1, low2, low3 := baseConf, baseConf, baseConf
+	low1.Throughput = baseConf.Throughput / 2
+	low2.Throughput = baseConf.Throughput / 4
+	low3.Throughput = baseConf.Throughput / 8
+
+	tc := &TestCase{id: id, name: fmt.Sprintf("Append 3 different throughput %v,%v,%v packets/s, latency %v, loss %v to base case",
+		low1.Throughput, low2.Throughput, low3.Throughput, baseConf.Latency, baseConf.Loss), bytesToSend: bytesToSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	tc.mockConfigs["0"] = baseConf
+	tc.mockConfigs["1"] = low1
+	tc.mockConfigs["2"] = low2
+	tc.mockConfigs["3"] = low3
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = run(tc, "base_and_3_diff_tp")
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}
+
+// go test -v -run=TestTpTrendFromAvg
+func TestTpTrendFromAvg(t *testing.T) {
+	if testResult == nil {
+		testResult = make([]*TestCase, 0)
+	}
+
+	id++
+	conf1, conf2 := baseConf, baseConf
+	conf1.Throughput = 1024
+	conf2.Throughput = 512
+	toSend := 80 << 20
+
+	tc := &TestCase{id: id, name: fmt.Sprintf("Two connections, throughputs are %v,%v packets/s, latency %v, loss %v to base case",
+		conf1.Throughput, conf2.Throughput, baseConf.Latency, baseConf.Loss), bytesToSend: toSend}
+	tc.mockConfigs = make(map[string]mockconn.ConnConfig)
+	tc.mockConfigs["0"] = conf1
+	tc.mockConfigs["1"] = conf2
+	tc.numClients = len(tc.mockConfigs)
+
+	tc = run(tc, "tp_trend_from_avg")
+	testResult = append(testResult, tc)
+	PrintResult(testResult)
+}