ProgrammingPercy percybolmer

Author about Technology & Programming

percybolmer / websockets-index-v2.js

Last active September 10, 2022 05:55

	<!DOCTYPE html>
	<html lang="en">

	<head>
	<meta charset="UTF-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
	<meta http-equiv="X-UA-Compatible" content="ie=edge" />
	<title>PP - Websockets</title>
	</head>

percybolmer / websockets-index-v1.js

Created September 7, 2022 13:51

	/**
	* Once the website loads, we want to apply listeners and connect to websocket
	* */
	window.onload = function () {
	// Apply our listener functions to the submit event on both forms
	// we do it this way to avoid redirects
	document.getElementById("chatroom-selection").onsubmit = changeChatRoom;
	document.getElementById("chatroom-message").onsubmit = sendMessage;

	// Check if the browser supports WebSocket

percybolmer / websockets-client-v5.go

Created September 7, 2022 13:40

readMessages

	// readMessages will start the client to read messages and handle them
	// appropriatly.
	// This is suppose to be ran as a goroutine
	func (c *Client) readMessages() {
	defer func() {
	// Graceful Close the Connection once this
	// function is done
	c.manager.removeClient(c)
	}()
	// Loop Forever

percybolmer / websockets-client-v4.go

Created September 7, 2022 13:27

write websockets messages

	// writeMessages is a process that listens for new messages to output to the Client
	func (c *Client) writeMessages() {
	defer func() {
	// Graceful close if this triggers a closing
	c.manager.removeClient(c)
	}()

	for {
	select {
	case message, ok := <-c.egress:

percybolmer / websockets-client-v3.go

Created September 7, 2022 13:24

	// Client is a websocket client, basically a frontend visitor
	type Client struct {
	// the websocket connection
	connection *websocket.Conn

	// manager is the manager used to manage the client
	manager *Manager
	// egress is used to avoid concurrent writes on the WebSocket
	egress chan []byte
	}

percybolmer / websockets-manager-v3.go

Created September 7, 2022 13:15

	// serveWS is a HTTP Handler that the has the Manager that allows connections
	func (m Manager) serveWS(w http.ResponseWriter, r http.Request) {

	log.Println("New connection")
	// Begin by upgrading the HTTP request
	conn, err := websocketUpgrader.Upgrade(w, r, nil)
	if err != nil {
	log.Println(err)
	return
	}

percybolmer / websockets-index-sendmessage-v2.js

Created September 7, 2022 06:29

	/**
	* sendMessage will send a new message onto the Websocket
	* */
	function sendMessage() {
	var newmessage = document.getElementById("message");
	if (newmessage != null) {
	conn.send(newmessage.value);
	}
	return false;
	}

percybolmer / websockets-client-v2.go

Created September 7, 2022 06:00

	// readMessages will start the client to read messages and handle them
	// appropriatly.
	// This is suppose to be ran as a goroutine
	func (c *Client) readMessages() {
	defer func() {
	// Graceful Close the Connection once this
	// function is done
	c.manager.removeClient(c)
	}()
	// Loop Forever

percybolmer / websockets-manager-v2.go

Last active September 6, 2022 17:27

Websockets with remove/add clients

	package main

	import (
	"log"
	"net/http"
	"sync"

	"github.com/gorilla/websocket"
	)

percybolmer / websockets-client-v1.go

Created September 6, 2022 06:16

Websocket clients

	package main

	import "github.com/gorilla/websocket"

	// ClientList is a map used to help manage a map of clients
	type ClientList map[*Client]bool

	// Client is a websocket client, basically a frontend visitor
	type Client struct {
	// the websocket connection