websocket客户端在发送大数据时断开连接(websocket client disconnects on sending large data)

 我有nodejs websocket服务器和客户端发送图像。 问题是客户端在发送高分辨率[即512 x 512或更多]或大尺寸[即接近> 50KB]图像时自动断开连接。 
 
 注意：尺寸和尺寸较小，可以发送。 
 
function getBase64Image(img) {
  var canvas = document.createElement("canvas");
  canvas.width = img.width;
  canvas.height = img.height;

  var ctx = canvas.getContext("2d");
  ctx.drawImage(img, 0, 0);

  var dataURL = canvas.toDataURL("image/png");
  return dataURL;
 }

function sendImage(){
  var img = getBase64Image(document.getElementById("image") );
  var JSONimg = {
   ' type' : 'img',
   'data' : img,
  }
 ws.send(JSON.stringify(JSONimg));
 }
 
 对应的HTML： 
 
 <button onclick="sendImage()">Send Image</button>
 <img id="image" src="img/image.png" alt="" />
 
 题 
 
 图像的大小或尺寸是插座断开的原因吗？ 
 
 websocket消息的任何大小限制？ 

I'm having nodejs websocket server and client to send images. Problem is client auto disconnects on sending high resolution [i.e 512 x 512 or more] or large size [i.e nearly > 50KB]images.
 
Note: With lesser dimensions and size it's able to send.
 
function getBase64Image(img) {
  var canvas = document.createElement("canvas");
  canvas.width = img.width;
  canvas.height = img.height;

  var ctx = canvas.getContext("2d");
  ctx.drawImage(img, 0, 0);

  var dataURL = canvas.toDataURL("image/png");
  return dataURL;
 }

function sendImage(){
  var img = getBase64Image(document.getElementById("image") );
  var JSONimg = {
   ' type' : 'img',
   'data' : img,
  }
 ws.send(JSON.stringify(JSONimg));
 }
 
Corresponding HTML:
 
 <button onclick="sendImage()">Send Image</button>
 <img id="image" src="img/image.png" alt="" />
 
Question
 
Is Size or dimension of image is a reason for socket disconnection?
 
Any Size limitation for websocket messages?

原文：https://stackoverflow.com/questions/29286050