[fix] smaller chunks, longer keep-alive (#4196)

frappe/public/js/frappe/socketio_client.js

@@ -318,7 +318,7 @@ frappe.socketio.SocketIOUploader = class SocketIOUploader {
 	}
 
 	start({file=null, is_private=0, filename='', callback=null, on_progress=null,
-		chunk_size=100000, fallback=null} = {}) {
+		chunk_size=24576, fallback=null} = {}) {
 
 		if (this.reader) {
 			frappe.throw(__('File Upload in Progress. Please try again in a few moments.'));
@@ -360,7 +360,7 @@ frappe.socketio.SocketIOUploader = class SocketIOUploader {
 		}
 		this.next_check = setTimeout (() => {
 			this.disconnect();
-		}, 3000);
+		}, 5000);
 	}
 
 	disconnect(with_message = true) {

socketio.js

@@ -163,7 +163,7 @@ io.on('connection', function(socket) {
 			socket.files[data.name].data.push(data.data);
 			socket.files[data.name].slice++;
 
-			if (socket.files[data.name].slice * 100000 >= socket.files[data.name].size) {
+			if (socket.files[data.name].slice * 24576 >= socket.files[data.name].size) {
 				// do something with the data
 				var fileBuffer = Buffer.concat(socket.files[data.name].data);