public void Nack(string messageId, string subscription, StompHeader headers = null)
{
if (headers == null)
{
headers = new Stomp.StompHeader();
}
headers.Set("message-id", messageId);
headers.Subscription = subscription;
this.Transmit(CommandEnum.NACK, headers);
}
/* javascript源代码。注意：js中WebSocket是new的时候就open的（不过也是异步的）
* Client.prototype.connect = function () {
* var args, errorCallback, headers, out;
* args = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
* out = this._parseConnect.apply(this, args);
* headers = out[0], this.connectCallback = out[1], errorCallback = out[2];
* if (typeof this.debug === "function") {
* this.debug("Opening Web Socket...");
* }
*
* this.ws.onmessage = (function (_this) {
* return function (evt) {
* var arr, c, client, data, frame, messageID, onreceive, subscription, unmarshalledData, _i, _len, _ref, _results;
* data = typeof ArrayBuffer !== 'undefined' && evt.data instanceof ArrayBuffer ? (arr = new Uint8Array(evt.data), typeof _this.debug === "function" ? _this.debug("--- got data length: " + arr.length) : void 0, ((function () {
* var _i, _len, _results;
* _results = [];
* for (_i = 0, _len = arr.length; _i < _len; _i++) {
* c = arr[_i];
* _results.push(String.fromCharCode(c));
* }
* return _results;
* })()).join('')) : evt.data;
* _this.serverActivity = now();
* if (data === Byte.LF) {
* if (typeof _this.debug === "function") {
* _this.debug("<<< PONG");
* }
* return;
* }
* if (typeof _this.debug === "function") {
* _this.debug("<<< " + data);
* }
* unmarshalledData = Frame.unmarshall(_this.partialData + data);
* _this.partialData = unmarshalledData.partial;
* _ref = unmarshalledData.frames;
* _results = [];
* for (_i = 0, _len = _ref.length; _i < _len; _i++) {
* frame = _ref[_i];
* switch (frame.command) {
* case "CONNECTED":
* if (typeof _this.debug === "function") {
* _this.debug("connected to server " + frame.headers.server);
* }
* _this.connected = true;
* _this._setupHeartbeat(frame.headers);
* _results.push(typeof _this.connectCallback === "function" ? _this.connectCallback(frame) : void 0);
* break;
* case "MESSAGE":
* subscription = frame.headers.subscription;
* onreceive = _this.subscriptions[subscription] || _this.onreceive;
* if (onreceive) {
* client = _this;
* messageID = frame.headers["message-id"];
* frame.ack = function (headers) {
* if (headers == null) {
* headers = {};
* }
* return client.ack(messageID, subscription, headers);
* };
* frame.nack = function (headers) {
* if (headers == null) {
* headers = {};
* }
* return client.nack(messageID, subscription, headers);
* };
* _results.push(onreceive(frame));
* } else {
* _results.push(typeof _this.debug === "function" ? _this.debug("Unhandled received MESSAGE: " + frame) : void 0);
* }
* break;
* case "RECEIPT":
* _results.push(typeof _this.onreceipt === "function" ? _this.onreceipt(frame) : void 0);
* break;
* case "ERROR":
* _results.push(typeof errorCallback === "function" ? errorCallback(frame) : void 0);
* break;
* default:
* _results.push(typeof _this.debug === "function" ? _this.debug("Unhandled frame: " + frame) : void 0);
* }
* }
* return _results;
* };
* })(this);
* this.ws.onclose = (function (_this) {
* return function () {
* var msg;
* msg = "Whoops! Lost connection to " + _this.ws.url;
* if (typeof _this.debug === "function") {
* _this.debug(msg);
* }
* _this._cleanUp();
* return typeof errorCallback === "function" ? errorCallback(msg) : void 0;
* };
* })(this);
* return this.ws.onopen = (function (_this) {
* return function () {
* if (typeof _this.debug === "function") {
* _this.debug('Web Socket Opened...');
* }
* headers["accept-version"] = Stomp.VERSIONS.supportedVersions();
* headers["heart-beat"] = [_this.heartbeat.outgoing, _this.heartbeat.incoming].join(',');
* return _this._transmit("CONNECT", headers);
* };
* })(this);
* };
*/
private void SendStompConnectCmd(StompHeader headers)
{
if (headers == null)
{
headers = new Stomp.StompHeader();
}
if (!headers.ContainsKey("accept-version"))
{
headers["accept-version"] = SUPPORTED_VERSIONS;
}
if (!headers.ContainsKey("heart-beat"))
{
headers["heart-beat"] = heartbeat_outgoing + "," + heartbeat_incoming;
}
this.Transmit(CommandEnum.CONNECT, headers);
}
public static Frame UnmarshallSingle(string data)
{
int divider = Math.Max(data.IndexOf("" + LF + LF), 0);
var headerLines = data.Substring(0, divider).Split(LF);
CommandEnum command = (CommandEnum)Enum.Parse(typeof(CommandEnum), headerLines.First());
StompHeader headers = new Stomp.StompHeader();
for (int i = 1, len = headerLines.Length; i < len; i++)
{
string line = headerLines[i];
int idx = line.IndexOf(':');
headers[line.Substring(0, idx).Trim()] = line.Substring(idx + 1).Trim();
}
string body = "";
int start = divider + 2;
if (headers.ContainsKey("content-length"))
{
int utf8Len = int.Parse(headers["content-length"]);
//注意，stomp是以utf8字节来算字符串长度的！！！所以下面截取body要用UTF8字节处理。
//但是stomp.js的js源码中是直接用data.substring(start, start + utf8Len)处理的，虽然js容错性好不会报错。不过一般utf8长度肯定大于字符长度，不会少截断，貌似直接截到结束也没什么关系？详细的得去研究Stomp协议body的格式
body = Encoding.UTF8.GetString(Encoding.UTF8.GetBytes(data.Substring(start)), 0, utf8Len);
}
else
{
Char?chr = null;
int i, j, len;
for (i = j = start, len = data.Length; start <= len ? j <len : j> len; i = start <= len ? ++j : --j)
{
chr = data[i];
if (chr == NULL)
{
break;
}
body += chr;
}
}
return(new Frame(command, headers, body));
}