Splitting data in NodeJS sockets

Question

Splitting data in NodeJS sockets

Whenever I encounter the need to divide data, my standard practice involves converting it into a string format.
Here's an example of how I handle data in my function:

  socket.on('data', function (data) {
    var str = data.toString().split("|");
    switch(str[0]){
        case "setUser":
        setUser(str[1], socket);
        break;
        case "joinChannel":
        joinChannel(str[1], socket);
        break;
    }

  });

During communication between my AS3 client and NodeJS server, sending data like "setUser|Name" followed by "joinChannel|main" results in NodeJS reading them as a single data packet. My query is regarding how to separate these into two distinct data packets.

javascript node.js sockets

Answer 1

Answer №1

To efficiently handle incoming data, it is recommended to buffer all the data together and then parse it as a single string. Alternatively, if parsing needs to be done as data comes in, splitting can be implemented in the data callback while keeping track of any partial commands that need to be processed along with the next chunk received.

var data = '';
socket.setEncoding('utf8');
socket.on('data', function(chunk) {
  data += chunk;
});
socket.on('end', function() {

  var lines = data.split('\n');
  lines.forEach(function(line) {
    var parts = line.split('|');
    switch (parts[0]) {
      case 'setUser':
        setUser(str[1], socket);
        break;
      case 'joinChannel':
        joinChannel(str[1], socket);
        break;
    }
  });
});

Answer 2

To efficiently handle incoming data, it is recommended to buffer all the data together and then parse it as a single string. Alternatively, if parsing needs to be done as data comes in, splitting can be implemented in the data callback while keeping track of any partial commands that need to be processed along with the next chunk received.

var data = '';
socket.setEncoding('utf8');
socket.on('data', function(chunk) {
  data += chunk;
});
socket.on('end', function() {

  var lines = data.split('\n');
  lines.forEach(function(line) {
    var parts = line.split('|');
    switch (parts[0]) {
      case 'setUser':
        setUser(str[1], socket);
        break;
      case 'joinChannel':
        joinChannel(str[1], socket);
        break;
    }
  });
});

Splitting data in NodeJS sockets

Answer №1

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