import com.github.nkzawa.engineio.client.Transport; //导入依赖的package包/类
protected String uri() {
    Map<String, String> query = this.query;
    if (query == null) {
        query = new HashMap<String, String>();
    }
    String schema = this.secure ? "https" : "http";
    String port = "";

    if (this.timestampRequests) {
        query.put(this.timestampParam, String.valueOf(new Date().getTime()) + "-" + Transport.timestamps++);
    }

    String _query = ParseQS.encode(query);

    if (this.port > 0 && (("https".equals(schema) && this.port != 443)
            || ("http".equals(schema) && this.port != 80))) {
        port = ":" + this.port;
    }

    if (_query.length() > 0) {
        _query = "?" + _query;
    }

    return schema + "://" + this.hostname + port + this.path + _query;
}