Replaced all instances of utils.Contains with slices.Contains.

Deleted Contains function from the utils.go file.
Replaced bufio.ReadWriter with io.Reader and io.Writer respectively.
Updated PubSub module to remove posibility of not passing a channel name when subscribing or publishing.

src/memberlist/broadcast.go

@@ -8,10 +8,10 @@ import (
 
 type BroadcastMessage struct {
 	NodeMeta
-	Action      string `json:"Action"`
-	Content     string `json:"Content"`
-	ContentHash string `json:"ContentHash"`
-	ConnId      string `json:"ConnId"`
+	Action      string   `json:"Action"`
+	Content     []byte   `json:"Content"`
+	ContentHash [16]byte `json:"ContentHash"`
+	ConnId      string   `json:"ConnId"`
 }
 
 // Invalidates Implements Broadcast interface

src/memberlist/memberlist.go

@@ -103,14 +103,14 @@ func (m *MemberList) broadcastRaftAddress(ctx context.Context) {
 	m.broadcastQueue.QueueBroadcast(&msg)
 }
 
-func (m *MemberList) ForwardDataMutation(ctx context.Context, cmd string) {
+func (m *MemberList) ForwardDataMutation(ctx context.Context, cmd []byte) {
 	// This function is only called by non-leaders
 	// It uses the broadcast queue to forward a data mutation within the cluster
 	connId, _ := ctx.Value(utils.ContextConnID("ConnectionID")).(string)
 	m.broadcastQueue.QueueBroadcast(&BroadcastMessage{
 		Action:      "MutateData",
 		Content:     cmd,
-		ContentHash: fmt.Sprintf("%x", md5.Sum([]byte(cmd))),
+		ContentHash: md5.Sum(cmd),
 		ConnId:      connId,
 		NodeMeta: NodeMeta{
 			ServerID: raft.ServerID(m.options.Config.ServerID),

src/modules/acl/acl.go

@@ -264,6 +264,11 @@ func (acl *ACL) AuthorizeConnection(conn *net.Conn, cmd []string, command utils.
 		}
 	}
 
+	// Skip ack
+	if strings.EqualFold(comm, "ack") {
+		return nil
+	}
+
 	// If the command is 'auth', then return early and allow it
 	if strings.EqualFold(comm, "auth") {
 		// TODO: Add rate limiting to prevent auth spamming

src/modules/list/commands.go

@@ -7,6 +7,7 @@ import (
 	"github.com/kelvinmwinuka/memstore/src/utils"
 	"math"
 	"net"
+	"slices"
 	"strings"
 )
 
@@ -333,7 +334,7 @@ func handleLMove(ctx context.Context, cmd []string, server utils.Server, conn *n
 	whereFrom := strings.ToLower(cmd[3])
 	whereTo := strings.ToLower(cmd[4])
 
-	if !utils.Contains[string]([]string{"left", "right"}, whereFrom) || !utils.Contains[string]([]string{"left", "right"}, whereTo) {
+	if !slices.Contains([]string{"left", "right"}, whereFrom) || !slices.Contains([]string{"left", "right"}, whereTo) {
 		return nil, errors.New("wherefrom and whereto arguments must be either LEFT or RIGHT")
 	}
 

src/modules/ping/commands.go

@@ -59,7 +59,7 @@ func NewModule() Plugin {
 					return []string{}, nil
 				},
 				HandlerFunc: func(ctx context.Context, cmd []string, server utils.Server, conn *net.Conn) ([]byte, error) {
-					return []byte("_\r\n\r\n"), nil
+					return []byte("$-1\r\n\r\n"), nil
 				},
 			},
 		},

src/modules/pubsub/commands.go

@@ -32,9 +32,6 @@ func handleSubscribe(ctx context.Context, cmd []string, server utils.Server, con
 		return nil, errors.New("could not load pubsub")
 	}
 	switch len(cmd) {
-	case 1:
-		// Subscribe to all channels
-		pubsub.Subscribe(ctx, conn, nil, nil)
 	case 2:
 		// Subscribe to specified channel
 		pubsub.Subscribe(ctx, conn, cmd[1], nil)
@@ -44,7 +41,7 @@ func handleSubscribe(ctx context.Context, cmd []string, server utils.Server, con
 	default:
 		return nil, errors.New(utils.WRONG_ARGS_RESPONSE)
 	}
-	return []byte("+SUBSCRIBE_OK\r\n\n"), nil
+	return []byte("+SUBSCRIBE_OK\r\n\r\n"), nil
 }
 
 func handleUnsubscribe(ctx context.Context, cmd []string, server utils.Server, conn *net.Conn) ([]byte, error) {
@@ -68,13 +65,10 @@ func handlePublish(ctx context.Context, cmd []string, server utils.Server, conn
 	if !ok {
 		return nil, errors.New("could not load pubsub")
 	}
-	if len(cmd) == 3 {
-		pubsub.Publish(ctx, cmd[2], cmd[1])
-	} else if len(cmd) == 2 {
-		pubsub.Publish(ctx, cmd[1], nil)
-	} else {
+	if len(cmd) != 3 {
 		return nil, errors.New(utils.WRONG_ARGS_RESPONSE)
 	}
+	pubsub.Publish(ctx, cmd[2], cmd[1])
 	return []byte(utils.OK_RESPONSE), nil
 }
 

src/modules/pubsub/pubsub.go

@@ -1,13 +1,14 @@
 package pubsub
 
 import (
-	"bufio"
+	"bytes"
 	"container/ring"
 	"context"
 	"fmt"
 	"github.com/kelvinmwinuka/memstore/src/utils"
+	"io"
 	"net"
-	"strings"
+	"slices"
 	"sync"
 	"time"
 )
@@ -39,29 +40,44 @@ func (cg *ConsumerGroup) SendMessage(message string) {
 
 	cg.subscribersRWMut.RUnlock()
 
-	rw := bufio.NewReadWriter(bufio.NewReader(*conn), bufio.NewWriter(*conn))
-	rw.WriteString(fmt.Sprintf("$%d\r\n%s\r\n\n", len(message), message))
-	rw.Flush()
+	w := io.Writer(*conn)
+	r := io.Reader(*conn)
 
+	if _, err := w.Write([]byte(fmt.Sprintf("$%d\r\n%s\r\n\n", len(message), message))); err != nil {
+		// TODO: Log error at configured logger
+		fmt.Println(err)
+	}
 	// Wait for an ACK
 	// If no ACK is received within a time limit, remove this connection from subscribers and retry
-	(*conn).SetReadDeadline(time.Now().Add(250 * time.Millisecond))
-	if msg, err := utils.ReadMessage(rw); err != nil {
+	if err := (*conn).SetReadDeadline(time.Now().Add(250 * time.Millisecond)); err != nil {
+		// TODO: Log error at configured logger
+		fmt.Println(err)
+	}
+	if msg, err := utils.ReadMessage(r); err != nil {
 		// Remove the connection from subscribers list
 		cg.Unsubscribe(conn)
 		// Reset the deadline
-		(*conn).SetReadDeadline(time.Time{})
+		if err := (*conn).SetReadDeadline(time.Time{}); err != nil {
+			// TODO: Log error at configured logger
+			fmt.Println(err)
+		}
 		// Retry sending the message
 		cg.SendMessage(message)
 	} else {
-		if strings.TrimSpace(msg) != "+ACK" {
+		if !bytes.Equal(bytes.TrimSpace(msg), []byte("+ACK")) {
 			cg.Unsubscribe(conn)
-			(*conn).SetReadDeadline(time.Time{})
+			if err := (*conn).SetReadDeadline(time.Time{}); err != nil {
+				// TODO: Log error at configured logger
+				fmt.Println(err)
+			}
 			cg.SendMessage(message)
 		}
 	}
 
-	(*conn).SetDeadline(time.Time{})
+	if err := (*conn).SetDeadline(time.Time{}); err != nil {
+		// TODO: Log error at configured logger
+		fmt.Println(err)
+	}
 	cg.subscribers = cg.subscribers.Next()
 }
 
@@ -152,19 +168,31 @@ func (ch *Channel) Start() {
 
 			for _, conn := range ch.subscribers {
 				go func(conn *net.Conn) {
-					rw := bufio.NewReadWriter(bufio.NewReader(*conn), bufio.NewWriter(*conn))
-					rw.WriteString(fmt.Sprintf("$%d\r\n%s\r\n\n", len(message), message))
-					rw.Flush()
+					w := io.Writer(*conn)
+					r := io.Reader(*conn)
 
-					(*conn).SetReadDeadline(time.Now().Add(200 * time.Millisecond))
+					if _, err := w.Write([]byte(fmt.Sprintf("$%d\r\n%s\r\n\r\n", len(message), message))); err != nil {
+						// TODO: Log error at configured logger
+						fmt.Println(err)
+					}
+
+					if err := (*conn).SetReadDeadline(time.Now().Add(200 * time.Millisecond)); err != nil {
+						// TODO: Log error at configured logger
+						fmt.Println(err)
+						ch.Unsubscribe(conn)
+					}
 					defer func() {
-						(*conn).SetReadDeadline(time.Time{})
+						if err := (*conn).SetReadDeadline(time.Time{}); err != nil {
+							// TODO: Log error at configured logger
+							fmt.Println(err)
+							ch.Unsubscribe(conn)
+						}
 					}()
 
-					if msg, err := utils.ReadMessage(rw); err != nil {
+					if msg, err := utils.ReadMessage(r); err != nil {
 						ch.Unsubscribe(conn)
 					} else {
-						if strings.TrimSpace(msg) != "+ACK" {
+						if !bytes.EqualFold(bytes.TrimSpace(msg), []byte("+ACK")) {
 							ch.Unsubscribe(conn)
 						}
 					}
@@ -177,7 +205,7 @@ func (ch *Channel) Start() {
 }
 
 func (ch *Channel) Subscribe(conn *net.Conn, consumerGroupName interface{}) {
-	if consumerGroupName == nil && !utils.Contains[*net.Conn](ch.subscribers, conn) {
+	if consumerGroupName == nil && !slices.Contains(ch.subscribers, conn) {
 		ch.subscribersRWMut.Lock()
 		defer ch.subscribersRWMut.Unlock()
 		ch.subscribers = append(ch.subscribers, conn)
@@ -230,31 +258,21 @@ type PubSub struct {
 
 func NewPubSub() *PubSub {
 	return &PubSub{
-		channels: []*Channel{
-			NewChannel("chan"),
-		},
+		channels: []*Channel{},
 	}
 }
 
-func (ps *PubSub) Subscribe(ctx context.Context, conn *net.Conn, channelName interface{}, consumerGroup interface{}) {
-	// If no channel name is given, subscribe to all channels
-	if channelName == nil {
-		for _, channel := range ps.channels {
-			go channel.Subscribe(conn, nil)
-		}
-		return
-	}
-
+func (ps *PubSub) Subscribe(ctx context.Context, conn *net.Conn, channelName string, consumerGroup interface{}) {
 	// Check if channel with given name exists
 	// If it does, subscribe the connection to the channel
 	// If it does not, create the channel and subscribe to it
-	channels := utils.Filter[*Channel](ps.channels, func(c *Channel) bool {
-		return c.name == channelName
+	channelIdx := slices.IndexFunc(ps.channels, func(channel *Channel) bool {
+		return channel.name == channelName
 	})
 
-	if len(channels) <= 0 {
+	if channelIdx == -1 {
 		go func() {
-			newChan := NewChannel(channelName.(string))
+			newChan := NewChannel(channelName)
 			newChan.Start()
 			newChan.Subscribe(conn, consumerGroup)
 			ps.channels = append(ps.channels, newChan)
@@ -262,9 +280,7 @@ func (ps *PubSub) Subscribe(ctx context.Context, conn *net.Conn, channelName int
 		return
 	}
 
-	for _, channel := range channels {
-		go channel.Subscribe(conn, consumerGroup)
-	}
+	go ps.channels[channelIdx].Subscribe(conn, consumerGroup)
 }
 
 func (ps *PubSub) Unsubscribe(ctx context.Context, conn *net.Conn, channelName interface{}) {
@@ -284,18 +300,10 @@ func (ps *PubSub) Unsubscribe(ctx context.Context, conn *net.Conn, channelName i
 	}
 }
 
-func (ps *PubSub) Publish(ctx context.Context, message string, channelName interface{}) {
-	if channelName == nil {
-		for _, channel := range ps.channels {
-			go channel.Publish(message)
-		}
-		return
-	}
-
+func (ps *PubSub) Publish(ctx context.Context, message string, channelName string) {
 	channels := utils.Filter[*Channel](ps.channels, func(c *Channel) bool {
 		return c.name == channelName
 	})
-
 	for _, channel := range channels {
 		go channel.Publish(message)
 	}

src/modules/set/set.go

@@ -3,6 +3,7 @@ package set
 import (
 	"github.com/kelvinmwinuka/memstore/src/utils"
 	"math/rand"
+	"slices"
 )
 
 type Set struct {
@@ -72,7 +73,7 @@ func (set *Set) GetRandom(count int) []string {
 		// Count is positive, do not allow repeat elements
 		for i := 0; i < utils.AbsInt(count); {
 			n = rand.Intn(len(keys))
-			if !utils.Contains(res, keys[n]) {
+			if !slices.Contains(res, keys[n]) {
 				res = append(res, keys[n])
 				keys = utils.Filter(keys, func(elem string) bool {
 					return elem != keys[n]

src/modules/sorted_set/commands.go

@@ -52,7 +52,7 @@ func handleZADD(ctx context.Context, cmd []string, server utils.Server, conn *ne
 		}
 		switch utils.AdaptType(cmd[i]).(type) {
 		case string:
-			if utils.Contains([]string{"-inf", "+inf"}, strings.ToLower(cmd[i])) {
+			if slices.Contains([]string{"-inf", "+inf"}, strings.ToLower(cmd[i])) {
 				membersStartIndex = i
 			}
 		case float64:
@@ -111,11 +111,11 @@ func handleZADD(ctx context.Context, cmd []string, server utils.Server, conn *ne
 	if membersStartIndex > 2 {
 		options := cmd[2:membersStartIndex]
 		for _, option := range options {
-			if utils.Contains([]string{"xx", "nx"}, strings.ToLower(option)) {
+			if slices.Contains([]string{"xx", "nx"}, strings.ToLower(option)) {
 				updatePolicy = option
 				continue
 			}
-			if utils.Contains([]string{"gt", "lt"}, strings.ToLower(option)) {
+			if slices.Contains([]string{"gt", "lt"}, strings.ToLower(option)) {
 				comparison = option
 				continue
 			}
@@ -1725,7 +1725,7 @@ respectively.`,
 						return nil, errors.New(utils.WRONG_ARGS_RESPONSE)
 					}
 					endIdx := slices.IndexFunc(cmd, func(s string) bool {
-						return utils.Contains([]string{"MIN", "MAX", "COUNT"}, strings.ToUpper(s))
+						return slices.Contains([]string{"MIN", "MAX", "COUNT"}, strings.ToUpper(s))
 					})
 					if endIdx == -1 {
 						return cmd[1:], nil

src/modules/sorted_set/sorted_set.go

@@ -138,7 +138,7 @@ func (set *SortedSet) AddOrUpdate(
 			if !set.Contains(m.value) {
 				return count, fmt.Errorf("cannot increment member %s as it does not exist in the sorted set", m.value)
 			}
-			if utils.Contains([]Score{Score(math.Inf(-1)), Score(math.Inf(1))}, set.members[m.value].score) {
+			if slices.Contains([]Score{Score(math.Inf(-1)), Score(math.Inf(1))}, set.members[m.value].score) {
 				return count, errors.New("cannot increment -inf or +inf")
 			}
 			set.members[m.value] = MemberObject{

src/modules/sorted_set/utils.go

@@ -3,7 +3,6 @@ package sorted_set
 import (
 	"cmp"
 	"errors"
-	"github.com/kelvinmwinuka/memstore/src/utils"
 	"slices"
 	"strconv"
 	"strings"
@@ -19,7 +18,7 @@ func extractKeysWeightsAggregateWithScores(cmd []string) ([]string, []int, strin
 	if weightsIndex != -1 {
 		firstModifierIndex = weightsIndex
 		for i := weightsIndex + 1; i < len(cmd); i++ {
-			if utils.Contains([]string{"aggregate", "withscores"}, cmd[i]) {
+			if slices.Contains([]string{"aggregate", "withscores"}, cmd[i]) {
 				break
 			}
 			w, err := strconv.Atoi(cmd[i])
@@ -43,7 +42,7 @@ func extractKeysWeightsAggregateWithScores(cmd []string) ([]string, []int, strin
 		if aggregateIndex >= len(cmd)-1 {
 			return []string{}, []int{}, "", false, errors.New("aggregate must be SUM, MIN, or MAX")
 		}
-		if !utils.Contains([]string{"sum", "min", "max"}, strings.ToLower(cmd[aggregateIndex+1])) {
+		if !slices.Contains([]string{"sum", "min", "max"}, strings.ToLower(cmd[aggregateIndex+1])) {
 			return []string{}, []int{}, "", false, errors.New("aggregate must be SUM, MIN, or MAX")
 		}
 		aggregate = strings.ToLower(cmd[aggregateIndex+1])
@@ -93,7 +92,7 @@ func validateUpdatePolicy(updatePolicy interface{}) (string, error) {
 	if !ok {
 		return "", err
 	}
-	if !utils.Contains([]string{"nx", "xx"}, strings.ToLower(policy)) {
+	if !slices.Contains([]string{"nx", "xx"}, strings.ToLower(policy)) {
 		return "", err
 	}
 	return policy, nil
@@ -108,7 +107,7 @@ func validateComparison(comparison interface{}) (string, error) {
 	if !ok {
 		return "", err
 	}
-	if !utils.Contains([]string{"lt", "gt"}, strings.ToLower(comp)) {
+	if !slices.Contains([]string{"lt", "gt"}, strings.ToLower(comp)) {
 		return "", err
 	}
 	return comp, nil

src/server/server.go

@@ -1,7 +1,6 @@
 package server
 
 import (
-	"bufio"
 	"context"
 	"crypto/tls"
 	"fmt"
@@ -85,18 +84,20 @@ func (server *Server) StartTCP(ctx context.Context) {
 func (server *Server) handleConnection(ctx context.Context, conn net.Conn) {
 	server.ACL.RegisterConnection(&conn)
 
-	connRW := bufio.NewReadWriter(bufio.NewReader(conn), bufio.NewWriter(conn))
+	w := io.Writer(conn)
+	r := io.Reader(conn)
 
 	cid := server.ConnID.Add(1)
 	ctx = context.WithValue(ctx, utils.ContextConnID("ConnectionID"),
 		fmt.Sprintf("%s-%d", ctx.Value(utils.ContextServerID("ServerID")), cid))
 
 	for {
-		message, err := utils.ReadMessage(connRW)
+		message, err := utils.ReadMessage(r)
 
 		if err != nil {
 			if err == io.EOF {
 				// Connection closed
+				// TODO: Remove this connection from channel subscriptions
 				break
 			}
 			if err, ok := err.(net.Error); ok && err.Timeout() {
@@ -115,15 +116,19 @@ func (server *Server) handleConnection(ctx context.Context, conn net.Conn) {
 
 		if cmd, err := utils.Decode(message); err != nil {
 			// Return error to client
-			connRW.Write([]byte(fmt.Sprintf("-Error %s\r\n\n", err.Error())))
-			connRW.Flush()
+			if _, err := w.Write([]byte(fmt.Sprintf("-Error %s\r\n\r\n", err.Error()))); err != nil {
+				// TODO: Log error at configured logger
+				fmt.Println(err)
+			}
 			continue
 		} else {
 			command, err := server.getCommand(cmd[0])
 
 			if err != nil {
-				connRW.WriteString(fmt.Sprintf("-%s\r\n\n", err.Error()))
-				connRW.Flush()
+				if _, err := w.Write([]byte(fmt.Sprintf("-%s\r\n\r\n", err.Error()))); err != nil {
+					// TODO: Log error at configured logger
+					fmt.Println(err)
+				}
 				continue
 			}
 
@@ -138,47 +143,69 @@ func (server *Server) handleConnection(ctx context.Context, conn net.Conn) {
 			}
 
 			if err := server.ACL.AuthorizeConnection(&conn, cmd, command, subCommand); err != nil {
-				connRW.WriteString(fmt.Sprintf("-%s\r\n\n", err.Error()))
-				connRW.Flush()
+				if _, err := w.Write([]byte(fmt.Sprintf("-%s\r\n\r\n", err.Error()))); err != nil {
+					// TODO: Log error at configured logger
+					fmt.Println(err)
+				}
 				continue
 			}
 
 			if !server.IsInCluster() || !synchronize {
 				if res, err := handler(ctx, cmd, server, &conn); err != nil {
-					connRW.Write([]byte(fmt.Sprintf("-%s\r\n\n", err.Error())))
+					if _, err := w.Write([]byte(fmt.Sprintf("-%s\r\n\r\n", err.Error()))); err != nil {
+						// TODO: Log error at configured logger
+						fmt.Println(err)
+					}
 				} else {
-					connRW.Write(res)
+					if command.Command == "ack" {
+						continue
+					}
+					if _, err := w.Write(res); err != nil {
+						// TODO: Log error at configured logger
+						fmt.Println(err)
+					}
 					// TODO: Write successful, add entry to AOF
 				}
-				connRW.Flush()
 				continue
 			}
 
 			// Handle other commands that need to be synced across the cluster
 			if server.raft.IsRaftLeader() {
 				if res, err := server.raftApply(ctx, cmd); err != nil {
-					connRW.Write([]byte(fmt.Sprintf("-Error %s\r\n\r\n", err.Error())))
+					if _, err := w.Write([]byte(fmt.Sprintf("-Error %s\r\n\r\n", err.Error()))); err != nil {
+						// TODO: Log error at configured logger
+						fmt.Println(err)
+					}
 				} else {
-					connRW.Write(res)
+					if _, err := w.Write(res); err != nil {
+						// TODO: Log error at configured logger
+						fmt.Println(err)
+					}
 				}
-				connRW.Flush()
 				continue
 			}
 
 			// Forward message to leader and return immediate OK response
 			if server.Config.ForwardCommand {
 				server.memberList.ForwardDataMutation(ctx, message)
-				connRW.Write([]byte(utils.OK_RESPONSE))
-				connRW.Flush()
+				if _, err := w.Write([]byte(utils.OK_RESPONSE)); err != nil {
+					// TODO: Log error at configured logger
+					fmt.Println(err)
+				}
 				continue
 			}
 
-			connRW.Write([]byte("-Error not cluster leader, cannot carry out command\r\n\r\n"))
-			connRW.Flush()
+			if _, err := w.Write([]byte("-Error not cluster leader, cannot carry out command\r\n\r\n")); err != nil {
+				// TODO: Log error at configured logger
+				fmt.Println(err)
+			}
 		}
 	}
 
-	conn.Close()
+	if err := conn.Close(); err != nil {
+		// TODO: Log error at configured logger
+		fmt.Println(err)
+	}
 }
 
 func (server *Server) Start(ctx context.Context) {

src/utils/utils.go

@@ -1,11 +1,11 @@
 package utils
 
 import (
-	"bufio"
 	"bytes"
-	"fmt"
+	"io"
 	"math/big"
 	"net"
+	"slices"
 	"strings"
 	"time"
 
@@ -31,15 +31,6 @@ func AdaptType(s string) interface{} {
 	return f
 }
 
-func Contains[T comparable](arr []T, elem T) bool {
-	for _, v := range arr {
-		if v == elem {
-			return true
-		}
-	}
-	return false
-}
-
 func Filter[T any](arr []T, test func(elem T) bool) (res []T) {
 	for _, e := range arr {
 		if test(e) {
@@ -49,9 +40,9 @@ func Filter[T any](arr []T, test func(elem T) bool) (res []T) {
 	return
 }
 
-func Decode(raw string) ([]string, error) {
-	rd := resp.NewReader(bytes.NewBufferString(raw))
-	res := []string{}
+func Decode(raw []byte) ([]string, error) {
+	rd := resp.NewReader(bytes.NewBuffer(raw))
+	var res []string
 
 	v, _, err := rd.ReadValue()
 
@@ -59,7 +50,7 @@ func Decode(raw string) ([]string, error) {
 		return nil, err
 	}
 
-	if Contains[string]([]string{"SimpleString", "Integer", "Error"}, v.Type().String()) {
+	if slices.Contains([]string{"SimpleString", "Integer", "Error"}, v.Type().String()) {
 		return []string{v.String()}, nil
 	}
 
@@ -72,25 +63,28 @@ func Decode(raw string) ([]string, error) {
 	return res, nil
 }
 
-func ReadMessage(r *bufio.ReadWriter) (message string, err error) {
-	var line [][]byte
+func ReadMessage(r io.Reader) ([]byte, error) {
+	delim := []byte{'\r', '\n', '\r', '\n'}
+	buffSize := 8
+	buff := make([]byte, buffSize)
+
+	var n int
+	var err error
+	var res []byte
 
 	for {
-		b, _, err := r.ReadLine()
-
-		if err != nil {
-			return "", err
-		}
-
-		if bytes.Equal(b, []byte("")) {
-			// End of message
+		n, err = r.Read(buff)
+		res = append(res, buff...)
+		if n < buffSize || err != nil {
 			break
 		}
-
-		line = append(line, b)
+		if bytes.Equal(buff[len(buff)-4:], delim) {
+			break
+		}
+		clear(buff)
 	}
 
-	return fmt.Sprintf("%s\r\n", string(bytes.Join(line, []byte("\r\n")))), nil
+	return res, err
 }
 
 func RetryBackoff(b retry.Backoff, maxRetries uint64, jitter, cappedDuration, maxDuration time.Duration) retry.Backoff {