function MessageComposer(id) {
    this.id  = id;
    this.msg = [base64Encoding.encode(id)];
    this.pushString = function(str) {
        this.msg.push(base64Encoding.encode(str.length), str);
    };
    this.pushInteger = function(i) {
        this.msg.push(wireEncoding.encode(i));
    };
    this.pushBoolean = function(b) {
        this.msg.push(b ? "I" : "H");
    };
    this.getResult = function() {
        return this.msg.join("");
    };
    return this;
}
function MessageEvent(msg) {
    this.msg        = msg;
    this.pointer    = 2;
    this.id   = base64Encoding.decode(msg.substr(0, 2));
    this.remainingLength = function() {
        return this.msg.length - this.pointer;
    };
    this.readString = function() {
        length = base64Encoding.decode(this.msg.substr(this.pointer, 2));
        this.pointer += 2;
        if (length > this.remainingLength()) length = this.remainingLength();
        data = this.msg.substr(this.pointer, length);
        this.pointer += length;
        return data;
    };
    this.readBoolean = function() {
        xint = wireEncoding.decode(this.msg.substr(this.pointer, 1), 0);
        this.pointer++;
        return xint == 1;
    };
    this.readInteger = function() {
        if (this.remainingLength() < 1) return 0;
        length = 6;
        if (length > this.remainingLength()) length = this.remainingLength();
        data = this.msg.substr(this.pointer, length);
        int_e = wireEncoding.decode(data);
        this.pointer += int_e[0];
        return int_e[1];
    };
    return this;
}