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5 Commits

6 changed files with 69 additions and 79 deletions

2
go.mod
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@@ -3,3 +3,5 @@ module git.neurocipta.com/rogerferdinan/safe-web-socket
go 1.24.5
require github.com/gorilla/websocket v1.5.3
require git.neurocipta.com/rogerferdinan/custom-rwmutex v1.0.0 // indirect

2
go.sum
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@@ -1,2 +1,4 @@
git.neurocipta.com/rogerferdinan/custom-rwmutex v1.0.0 h1:KnNc40SrYsg0cksIIcQy/ca6bunkGADQOs1u7O/E+iY=
git.neurocipta.com/rogerferdinan/custom-rwmutex v1.0.0/go.mod h1:9DvvHc2UZhBwEs63NgO4IhiuHnBNtTuBkTJgiMnnCss=
github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=

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@@ -11,7 +11,7 @@ import (
const (
writeWait = 10 * time.Second
pongWait = 60 * time.Second
pingPeriod = 55 * time.Second
pingPeriod = 25 * time.Second
)
type Client struct {
@@ -19,7 +19,6 @@ type Client struct {
Send chan []byte
SubscribedPath string
done chan struct{}
mu *CustomRwMutex
}
func NewClient(conn *websocket.Conn, subscribedPath string) *Client {
@@ -28,7 +27,6 @@ func NewClient(conn *websocket.Conn, subscribedPath string) *Client {
Send: make(chan []byte, 64),
SubscribedPath: subscribedPath,
done: make(chan struct{}),
mu: NewCustomRwMutex(),
}
}
@@ -37,8 +35,6 @@ type Hub struct {
Broadcast chan []byte
Register chan *Client
Unregister chan *Client
writeMu *CustomRwMutex
readMu *CustomRwMutex
}
func NewHub() *Hub {
@@ -47,7 +43,6 @@ func NewHub() *Hub {
Register: make(chan *Client),
Unregister: make(chan *Client),
Clients: make(map[*Client]bool),
writeMu: NewCustomRwMutex(),
}
}
@@ -100,7 +95,7 @@ func WritePump(c *Client, h *Hub) {
}
case <-pingTicker.C:
c.Conn.SetWriteDeadline(time.Now().Add(writeWait))
if err := c.Conn.WriteMessage(websocket.PingMessage, nil); err != nil {
if err := c.Conn.WriteMessage(websocket.PingMessage, []byte{}); err != nil {
return
}
}

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@@ -1,33 +0,0 @@
package internal
import (
"sync"
)
type CustomRwMutex struct {
mu *sync.RWMutex
}
func NewCustomRwMutex() *CustomRwMutex {
return &CustomRwMutex{
mu: &sync.RWMutex{},
}
}
func (rwMu *CustomRwMutex) WriteHandler(fn func() error) error {
rwMu.mu.Lock()
defer rwMu.mu.Unlock()
if err := fn(); err != nil {
return err
}
return nil
}
func (rwMu *CustomRwMutex) ReadHandler(fn func() error) error {
rwMu.mu.RLock()
defer rwMu.mu.RUnlock()
if err := fn(); err != nil {
return err
}
return nil
}

View File

@@ -5,8 +5,10 @@ import (
"fmt"
"log"
"net/url"
"strings"
"time"
custom_rwmutex "git.neurocipta.com/rogerferdinan/custom-rwmutex"
"git.neurocipta.com/rogerferdinan/safe-web-socket/internal"
"github.com/gorilla/websocket"
)
@@ -18,7 +20,8 @@ const (
type SafeWebsocketClientBuilder struct {
baseHost *string `nil_checker:"required"`
basePort *uint16 `nil_checker:"required"`
path *string `nil_checkeer:"required"`
path *string
rawQuery *string
useTLS *bool
}
@@ -46,13 +49,16 @@ func (b *SafeWebsocketClientBuilder) Path(path string) *SafeWebsocketClientBuild
return b
}
func (b *SafeWebsocketClientBuilder) RawQuery(rawQuery string) *SafeWebsocketClientBuilder {
b.rawQuery = &rawQuery
return b
}
func (b *SafeWebsocketClientBuilder) Build() (*SafeWebsocketClient, error) {
if err := internal.NilChecker(b); err != nil {
return nil, err
}
ctx, cancel := context.WithCancel(context.Background())
var useTLS bool
if b.useTLS != nil {
useTLS = *b.useTLS
@@ -62,17 +68,15 @@ func (b *SafeWebsocketClientBuilder) Build() (*SafeWebsocketClient, error) {
baseHost: *b.baseHost,
basePort: *b.basePort,
useTLS: useTLS,
path: *b.path,
ctx: ctx,
cancel: cancel,
path: b.path,
rawQuery: b.rawQuery,
dataChannel: make(chan []byte, 1),
mu: internal.NewCustomRwMutex(),
mu: custom_rwmutex.NewCustomRwMutex(),
reconnectCh: make(chan struct{}, 1),
isConnected: false,
}
if err := wsClient.connect(); err != nil {
cancel()
return nil, fmt.Errorf("failed to establish initial connection: %v", err)
}
@@ -83,9 +87,10 @@ type SafeWebsocketClient struct {
baseHost string
basePort uint16
useTLS bool
path string
path *string
rawQuery *string
dataChannel chan []byte
mu *internal.CustomRwMutex
mu *custom_rwmutex.CustomRwMutex
conn *websocket.Conn
ctx context.Context
cancel context.CancelFunc
@@ -103,29 +108,43 @@ func (wsClient *SafeWebsocketClient) connect() error {
newURL := url.URL{
Scheme: scheme,
Host: fmt.Sprintf("%s:%d", wsClient.baseHost, wsClient.basePort),
Path: wsClient.path,
}
if wsClient.path != nil && strings.TrimSpace(*wsClient.path) != "" {
newURL.Path = *wsClient.path
}
if wsClient.rawQuery != nil && strings.TrimSpace(*wsClient.rawQuery) != "" {
newURL.RawQuery = *wsClient.rawQuery
}
conn, _, err := websocket.DefaultDialer.Dial(newURL.String(), nil)
if err != nil {
return fmt.Errorf("failed to connect to %s: %w", wsClient.baseHost, err)
}
conn.SetPingHandler(func(pingData string) error {
if err := conn.WriteMessage(websocket.PongMessage, []byte(pingData)); err != nil {
if err == websocket.ErrCloseSent {
return nil
return wsClient.mu.WriteHandler(func() error {
if err := conn.WriteMessage(websocket.PongMessage, []byte(pingData)); err != nil {
if err == websocket.ErrCloseSent {
return nil
}
if netErr, ok := err.(interface{ Timeout() bool }); ok && netErr.Timeout() {
return nil
}
return err
}
if netErr, ok := err.(interface{ Timeout() bool }); ok && netErr.Timeout() {
return nil
}
return err
}
return nil
return nil
})
})
wsClient.mu.WriteHandler(func() error {
ctx, cancel := context.WithCancel(context.Background())
wsClient.ctx = ctx
wsClient.cancel = cancel
wsClient.conn = conn
wsClient.isConnected = true
return nil
})
@@ -159,28 +178,30 @@ func (wsClient *SafeWebsocketClient) startPingTicker() {
func (wsClient *SafeWebsocketClient) startReceiveHandler() {
for {
select {
case <-wsClient.reconnectCh:
case <-wsClient.ctx.Done():
log.Println("Reconnect handler stopped")
return
default:
if err := wsClient.mu.WriteHandler(func() error {
conn := wsClient.conn
// if err := wsClient.mu.ReadHandler(func() error {
conn := wsClient.conn
if conn == nil {
return fmt.Errorf("no active connection, waiting for reconnect")
}
_, message, err := conn.ReadMessage()
if err != nil {
return err
}
fmt.Println(string(message))
wsClient.dataChannel <- message
return nil
}); err != nil {
if conn == nil {
wsClient.triggerReconnect()
return
// return fmt.Errorf("no active connection, waiting for reconnect")
}
_, message, err := conn.ReadMessage()
if err != nil {
wsClient.triggerReconnect()
return
// return err
}
wsClient.dataChannel <- message
// return nil
// }); err != nil {
// wsClient.triggerReconnect()
// return
// }
}
}
}
@@ -193,8 +214,14 @@ func (wsClient *SafeWebsocketClient) triggerReconnect() {
}
func (wsClient *SafeWebsocketClient) reconnectHandler() {
for range wsClient.reconnectCh {
wsClient.connect()
for {
select {
case <-wsClient.reconnectCh:
wsClient.cancel()
wsClient.connect()
case <-wsClient.ctx.Done():
return
}
}
}

View File

@@ -18,9 +18,6 @@ type SafeWebsocketServerBuilder struct {
}
func NewSafeWebsocketServerBuilder() *SafeWebsocketServerBuilder {
h := internal.NewHub()
h.Run()
return &SafeWebsocketServerBuilder{
upgrader: &websocket.Upgrader{
ReadBufferSize: 1024,