diff --git a/bricks/agent.js b/bricks/agent.js
index 7430077..7d518ad 100644
--- a/bricks/agent.js
+++ b/bricks/agent.js
@@ -343,11 +343,6 @@ bricks.AgentIO = class extends bricks.VBox {
 		console.log('chunk end');
 	}
 	async user_inputed(e){
-		// 中止上一次请求
-		if (this._current_hr) {
-			this._current_hr.abort();
-			this._current_hr = null;
-		}
 		this.show_input(e.params);
 		var params = e.params;
 		params.llmid = this.agent_using_llmid;
@@ -366,15 +361,12 @@ bricks.AgentIO = class extends bricks.VBox {
 					});
 		this.msg_box.add_widget(mout);
 		var hr = new bricks.HttpResponseStream();
-		this._current_hr = hr;
 		var resp = await hr.post(this.opts.url, {params:params});
 		if (! resp) {
 			mout.run_stopped();
-			this._current_hr = null;
 			return;
 		}
 		await hr.handle_chunk(resp, this.chunk_response.bind(this, mout));
-		this._current_hr = null;
 		this.chunk_ended();
 	}
     async show_input(params){
diff --git a/bricks/jsoncall.js b/bricks/jsoncall.js
index c31f9ee..02d1bcc 100644
--- a/bricks/jsoncall.js
+++ b/bricks/jsoncall.js
@@ -247,34 +247,6 @@ bricks.HttpResponse = class extends bricks.HttpText {
 }
 
 bricks.HttpResponseStream = class extends bricks.HttpResponse {
-	constructor(){
-		super();
-		this._controller = new AbortController();
-	}
-	abort(){
-		this._controller.abort();
-	}
-	async bricks_fetch(url, {method='GET', headers=null, params=null, signal=null}={}){
-		url = this.url_parse(url);
-		var data = this.add_own_params(params);
-		var header = this.add_own_headers(headers);
-		var _params = {
-			method:method,
-			signal: signal || this._controller.signal
-		}
-		if (data instanceof FormData){
-			method = 'POST';
-			_params.body = data;
-		} else {
-			if (method == 'GET' || method == 'HEAD') {
-				let pstr = url_params(data);
-				url = url + '?' + pstr;
-			} else {
-				_params.body = JSON.stringify(data);
-			}
-		}
-		return await fetch(url, _params);
-	}
 	async handle_chunk(resp, handler){
 		const reader = resp.body.getReader();
 		const decoder = new TextDecoder('utf-8');