diff --git a/__init__.py b/__init__.py
index 6b1c0a6..57c96fb 100644
--- a/__init__.py
+++ b/__init__.py
@@ -21,13 +21,61 @@ from .py import services
 routes = config.routes
 
 
-@routes.get("/model-manager/ws")
-async def socket_handler(request):
+@routes.get("/model-manager/download/task")
+async def scan_download_tasks(request):
     """
-    Handle websocket connection.
+    Read download task list.
     """
-    ws = await services.connect_websocket(request)
-    return ws
+    try:
+        result = await services.scan_model_download_task_list()
+        return web.json_response({"success": True, "data": result})
+    except Exception as e:
+        error_msg = f"Read download task list failed: {e}"
+        logging.error(error_msg)
+        logging.debug(traceback.format_exc())
+        return web.json_response({"success": False, "error": error_msg})
+
+
+@routes.put("/model-manager/download/{task_id}")
+async def resume_download_task(request):
+    """
+    Toggle download task status.
+    """
+    try:
+        task_id = request.match_info.get("task_id", None)
+        if task_id is None:
+            raise web.HTTPBadRequest(reason="Invalid task id")
+        json_data = await request.json()
+        status = json_data.get("status", None)
+        if status == "pause":
+            await services.pause_model_download_task(task_id)
+        elif status == "resume":
+            await services.resume_model_download_task(task_id, request)
+        else:
+            raise web.HTTPBadRequest(reason="Invalid status")
+
+        return web.json_response({"success": True})
+    except Exception as e:
+        error_msg = f"Resume download task failed: {str(e)}"
+        logging.error(error_msg)
+        logging.debug(traceback.format_exc())
+        return web.json_response({"success": False, "error": error_msg})
+
+
+@routes.delete("/model-manager/download/{task_id}")
+async def delete_model_download_task(request):
+    """
+    Delete download task.
+    """
+    task_id = request.match_info.get("task_id", None)
+    try:
+        await services.delete_model_download_task(task_id)
+        return web.json_response({"success": True})
+    except Exception as e:
+        error_msg = f"Delete download task failed: {str(e)}"
+        logging.error(error_msg)
+        logging.debug(traceback.format_exc())
+        return web.json_response({"success": False, "error": error_msg})
 
 
 @routes.get("/model-manager/base-folders")
@@ -56,7 +104,7 @@ async def create_model(request):
     """
     post = await request.post()
     try:
-        task_id = await services.create_model_download_task(post)
+        task_id = await services.create_model_download_task(post, request)
         return web.json_response({"success": True, "data": {"taskId": task_id}})
     except Exception as e:
         error_msg = f"Create model download task failed: {str(e)}"
diff --git a/py/config.py b/py/config.py
index 8efbdee..f4d11a5 100644
--- a/py/config.py
+++ b/py/config.py
@@ -19,15 +19,3 @@ from server import PromptServer
 
 serverInstance = PromptServer.instance
 routes = serverInstance.routes
-
-
-class FakeRequest:
-    def __init__(self):
-        self.headers = {}
-
-
-class CustomException(BaseException):
-    def __init__(self, type: str, message: str = None) -> None:
-        self.type = type
-        self.message = message
-        super().__init__(message)
diff --git a/py/download.py b/py/download.py
index 9779951..95fafdd 100644
--- a/py/download.py
+++ b/py/download.py
@@ -9,7 +9,6 @@ from typing import Callable, Awaitable, Any, Literal, Union, Optional
 from dataclasses import dataclass
 from . import config
 from . import utils
-from . import socket
 from . import thread
 
 
@@ -93,33 +92,28 @@ def delete_task_status(task_id: str):
     download_model_task_status.pop(task_id, None)
 
 
-async def scan_model_download_task_list(sid: str):
+async def scan_model_download_task_list():
     """
     Scan the download directory and send the task list to the client.
     """
-    try:
-        download_dir = utils.get_download_path()
-        task_files = utils.search_files(download_dir)
-        task_files = folder_paths.filter_files_extensions(task_files, [".task"])
-        task_files = sorted(
-            task_files,
-            key=lambda x: os.stat(utils.join_path(download_dir, x)).st_ctime,
-            reverse=True,
-        )
-        task_list: list[dict] = []
-        for task_file in task_files:
-            task_id = task_file.replace(".task", "")
-            task_status = get_task_status(task_id)
-            task_list.append(task_status)
+    download_dir = utils.get_download_path()
+    task_files = utils.search_files(download_dir)
+    task_files = folder_paths.filter_files_extensions(task_files, [".task"])
+    task_files = sorted(
+        task_files,
+        key=lambda x: os.stat(utils.join_path(download_dir, x)).st_ctime,
+        reverse=True,
+    )
+    task_list: list[dict] = []
+    for task_file in task_files:
+        task_id = task_file.replace(".task", "")
+        task_status = get_task_status(task_id)
+        task_list.append(task_status)
 
-        await socket.send_json("downloadTaskList", task_list, sid)
-    except Exception as e:
-        error_msg = f"Refresh task list failed: {e}"
-        await socket.send_json("error", error_msg, sid)
-        logging.error(error_msg)
+    return utils.unpack_dataclass(task_list)
 
 
-async def create_model_download_task(post: dict):
+async def create_model_download_task(post: dict, request):
     """
     Creates a download task for the given post.
     """
@@ -152,12 +146,12 @@ async def create_model_download_task(post: dict):
             totalSize=float(post.get("sizeBytes", 0)),
         )
         download_model_task_status[task_id] = task_status
-        await socket.send_json("createDownloadTask", task_status)
+        await utils.send_json("create_download_task", task_status)
     except Exception as e:
         await delete_model_download_task(task_id)
         raise RuntimeError(str(e)) from e
 
-    await download_model(task_id)
+    await download_model(task_id, request)
     return task_id
 
 
@@ -170,7 +164,7 @@ async def delete_model_download_task(task_id: str):
     task_status = get_task_status(task_id)
     is_running = task_status.status == "doing"
     task_status.status = "waiting"
-    await socket.send_json("deleteDownloadTask", task_id)
+    await utils.send_json("delete_download_task", task_id)
 
     # Pause the task
     if is_running:
@@ -185,13 +179,13 @@ async def delete_model_download_task(task_id: str):
             delete_task_status(task_id)
             os.remove(utils.join_path(download_dir, task_file))
 
-    await socket.send_json("deleteDownloadTask", task_id)
+    await utils.send_json("delete_download_task", task_id)
 
 
-async def download_model(task_id: str):
+async def download_model(task_id: str, request):
     async def download_task(task_id: str):
         async def report_progress(task_status: TaskStatus):
-            await socket.send_json("updateDownloadTask", task_status)
+            await utils.send_json("update_download_task", task_status)
 
         try:
             # When starting a task from the queue, the task may not exist
@@ -201,7 +195,7 @@ async def download_model(task_id: str):
 
         # Update task status
         task_status.status = "doing"
-        await socket.send_json("updateDownloadTask", task_status)
+        await utils.send_json("update_download_task", task_status)
 
         try:
 
@@ -210,12 +204,12 @@ async def download_model(task_id: str):
 
             download_platform = task_status.platform
             if download_platform == "civitai":
-                api_key = utils.get_setting_value("api_key.civitai")
+                api_key = utils.get_setting_value(request, "api_key.civitai")
                 if api_key:
                     headers["Authorization"] = f"Bearer {api_key}"
 
             elif download_platform == "huggingface":
-                api_key = utils.get_setting_value("api_key.huggingface")
+                api_key = utils.get_setting_value(request, "api_key.huggingface")
                 if api_key:
                     headers["Authorization"] = f"Bearer {api_key}"
 
@@ -229,7 +223,7 @@ async def download_model(task_id: str):
         except Exception as e:
             task_status.status = "pause"
             task_status.error = str(e)
-            await socket.send_json("updateDownloadTask", task_status)
+            await utils.send_json("update_download_task", task_status)
             task_status.error = None
             logging.error(str(e))
 
@@ -238,11 +232,11 @@ async def download_model(task_id: str):
         if status == "Waiting":
             task_status = get_task_status(task_id)
             task_status.status = "waiting"
-            await socket.send_json("updateDownloadTask", task_status)
+            await utils.send_json("update_download_task", task_status)
     except Exception as e:
         task_status.status = "pause"
         task_status.error = str(e)
-        await socket.send_json("updateDownloadTask", task_status)
+        await utils.send_json("update_download_task", task_status)
         task_status.error = None
         logging.error(traceback.format_exc())
 
@@ -275,7 +269,7 @@ async def download_model_file(
         time.sleep(1)
         task_file = utils.join_path(download_path, f"{task_id}.task")
         os.remove(task_file)
-        await socket.send_json("completeDownloadTask", task_id)
+        await utils.send_json("complete_download_task", task_id)
 
     async def update_progress():
         nonlocal last_update_time
@@ -347,7 +341,7 @@ async def download_model_file(
         task_content.sizeBytes = total_size
         task_status.totalSize = total_size
         set_task_content(task_id, task_content)
-        await socket.send_json("updateDownloadTask", task_content)
+        await utils.send_json("update_download_task", task_content)
 
     with open(download_tmp_file, "ab") as f:
         for chunk in response.iter_content(chunk_size=8192):
@@ -366,4 +360,4 @@ async def download_model_file(
         await download_complete()
     else:
         task_status.status = "pause"
-        await socket.send_json("updateDownloadTask", task_status)
+        await utils.send_json("update_download_task", task_status)
diff --git a/py/services.py b/py/services.py
index 9518a3f..a94c0c7 100644
--- a/py/services.py
+++ b/py/services.py
@@ -1,37 +1,13 @@
 import os
-import logging
-import traceback
+
 import folder_paths
 
-from typing import Any
 from multidict import MultiDictProxy
 from . import config
 from . import utils
-from . import socket
 from . import download
 
 
-async def connect_websocket(request):
-    async def message_handler(event_type: str, detail: Any, sid: str):
-        try:
-            if event_type == "downloadTaskList":
-                await download.scan_model_download_task_list(sid=sid)
-
-            if event_type == "resumeDownloadTask":
-                await download.download_model(task_id=detail)
-
-            if event_type == "pauseDownloadTask":
-                await download.pause_model_download_task(task_id=detail)
-
-            if event_type == "deleteDownloadTask":
-                await download.delete_model_download_task(task_id=detail)
-        except Exception:
-            logging.error(traceback.format_exc())
-
-    ws = await socket.create_websocket_handler(request, handler=message_handler)
-    return ws
-
-
 def scan_models():
     result = []
     model_base_paths = config.model_base_paths
@@ -135,6 +111,22 @@ def remove_model(model_path: str):
         os.remove(utils.join_path(model_dirname, description))
 
 
-async def create_model_download_task(post):
+async def create_model_download_task(post, request):
     dict_post = dict(post)
-    return await download.create_model_download_task(dict_post)
+    return await download.create_model_download_task(dict_post, request)
+
+
+async def scan_model_download_task_list():
+    return await download.scan_model_download_task_list()
+
+
+async def pause_model_download_task(task_id):
+    return await download.pause_model_download_task(task_id)
+
+
+async def resume_model_download_task(task_id, request):
+    return await download.download_model(task_id, request)
+
+
+async def delete_model_download_task(task_id):
+    return await download.delete_model_download_task(task_id)
diff --git a/py/socket.py b/py/socket.py
deleted file mode 100644
index 13a39f9..0000000
--- a/py/socket.py
+++ /dev/null
@@ -1,63 +0,0 @@
-import aiohttp
-import logging
-import uuid
-import json
-from aiohttp import web
-from typing import Any, Callable, Awaitable
-from . import utils
-
-
-__sockets: dict[str, web.WebSocketResponse] = {}
-
-
-async def create_websocket_handler(
-    request, handler: Callable[[str, Any, str], Awaitable[Any]]
-):
-    ws = web.WebSocketResponse()
-    await ws.prepare(request)
-    sid = request.rel_url.query.get("clientId", "")
-    if sid:
-        # Reusing existing session, remove old
-        __sockets.pop(sid, None)
-    else:
-        sid = uuid.uuid4().hex
-
-    __sockets[sid] = ws
-
-    try:
-        async for msg in ws:
-            if msg.type == aiohttp.WSMsgType.ERROR:
-                logging.warning(
-                    "ws connection closed with exception %s" % ws.exception()
-                )
-            if msg.type == aiohttp.WSMsgType.TEXT:
-                data = json.loads(msg.data)
-                await handler(data.get("type"), data.get("detail"), sid)
-    finally:
-        __sockets.pop(sid, None)
-    return ws
-
-
-async def send_json(event: str, data: Any, sid: str = None):
-    detail = utils.unpack_dataclass(data)
-    message = {"type": event, "data": detail}
-
-    if sid is None:
-        socket_list = list(__sockets.values())
-        for ws in socket_list:
-            await __send_socket_catch_exception(ws.send_json, message)
-    elif sid in __sockets:
-        await __send_socket_catch_exception(__sockets[sid].send_json, message)
-
-
-async def __send_socket_catch_exception(function, message):
-    try:
-        await function(message)
-    except (
-        aiohttp.ClientError,
-        aiohttp.ClientPayloadError,
-        ConnectionResetError,
-        BrokenPipeError,
-        ConnectionError,
-    ) as err:
-        logging.warning("send error: {}".format(err))
diff --git a/py/thread.py b/py/thread.py
index 82689f7..e40798e 100644
--- a/py/thread.py
+++ b/py/thread.py
@@ -2,7 +2,6 @@ import asyncio
 import threading
 import queue
 import logging
-from . import utils
 
 
 class DownloadThreadPool:
@@ -13,14 +12,7 @@ class DownloadThreadPool:
         self._lock = threading.Lock()
 
         default_max_workers = 5
-        max_workers: int = utils.get_setting_value(
-            "download.max_task_count", default_max_workers
-        )
-
-        if max_workers <= 0:
-            max_workers = default_max_workers
-            utils.set_setting_value("download.max_task_count", max_workers)
-
+        max_workers: int = default_max_workers
         self.max_worker = max_workers
 
     def submit(self, task, task_id):
diff --git a/py/utils.py b/py/utils.py
index 1aa9dff..e433547 100644
--- a/py/utils.py
+++ b/py/utils.py
@@ -334,18 +334,16 @@ def resolve_setting_key(key: str) -> str:
     return setting_id
 
 
-def set_setting_value(key: str, value: Any):
+def set_setting_value(request: web.Request, key: str, value: Any):
     setting_id = resolve_setting_key(key)
-    fake_request = config.FakeRequest()
-    settings = config.serverInstance.user_manager.settings.get_settings(fake_request)
+    settings = config.serverInstance.user_manager.settings.get_settings(request)
     settings[setting_id] = value
-    config.serverInstance.user_manager.settings.save_settings(fake_request, settings)
+    config.serverInstance.user_manager.settings.save_settings(request, settings)
 
 
-def get_setting_value(key: str, default: Any = None) -> Any:
+def get_setting_value(request: web.Request, key: str, default: Any = None) -> Any:
     setting_id = resolve_setting_key(key)
-    fake_request = config.FakeRequest()
-    settings = config.serverInstance.user_manager.settings.get_settings(fake_request)
+    settings = config.serverInstance.user_manager.settings.get_settings(request)
     return settings.get(setting_id, default)
 
 
@@ -361,3 +359,8 @@ def unpack_dataclass(data: Any):
         return asdict(data)
     else:
         return data
+
+
+async def send_json(event: str, data: Any, sid: str = None):
+    detail = unpack_dataclass(data)
+    await config.serverInstance.send_json(event, detail, sid)
diff --git a/src/hooks/download.ts b/src/hooks/download.ts
index fb1f865..8d41fb4 100644
--- a/src/hooks/download.ts
+++ b/src/hooks/download.ts
@@ -1,8 +1,9 @@
 import { useLoading } from 'hooks/loading'
 import { MarkdownTool, useMarkdown } from 'hooks/markdown'
-import { socket } from 'hooks/socket'
+import { request } from 'hooks/request'
 import { defineStore } from 'hooks/store'
 import { useToast } from 'hooks/toast'
+import { api } from 'scripts/comfyAPI'
 import { bytesToSize } from 'utils/common'
 import { onBeforeMount, onMounted, ref, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
@@ -13,10 +14,6 @@ export const useDownload = defineStore('download', (store) => {
 
   const taskList = ref<DownloadTask[]>([])
 
-  const refresh = () => {
-    socket.send('downloadTaskList', null)
-  }
-
   const createTaskItem = (item: DownloadTaskOptions) => {
     const { downloadedSize, totalSize, bps, ...rest } = item
 
@@ -26,10 +23,20 @@ export const useDownload = defineStore('download', (store) => {
       downloadProgress: `${bytesToSize(downloadedSize)} / ${bytesToSize(totalSize)}`,
       downloadSpeed: `${bytesToSize(bps)}/s`,
       pauseTask() {
-        socket.send('pauseDownloadTask', item.taskId)
+        request(`/download/${item.taskId}`, {
+          method: 'PUT',
+          body: JSON.stringify({
+            status: 'pause',
+          }),
+        })
       },
       resumeTask: () => {
-        socket.send('resumeDownloadTask', item.taskId)
+        request(`/download/${item.taskId}`, {
+          method: 'PUT',
+          body: JSON.stringify({
+            status: 'resume',
+          }),
+        })
       },
       deleteTask: () => {
         confirm.require({
@@ -46,7 +53,9 @@ export const useDownload = defineStore('download', (store) => {
             severity: 'danger',
           },
           accept: () => {
-            socket.send('deleteDownloadTask', item.taskId)
+            request(`/download/${item.taskId}`, {
+              method: 'DELETE',
+            })
           },
           reject: () => {},
         })
@@ -56,12 +65,28 @@ export const useDownload = defineStore('download', (store) => {
     return task
   }
 
+  const refresh = async () => {
+    return request('/download/task')
+      .then((resData: DownloadTaskOptions[]) => {
+        taskList.value = resData.map((item) => createTaskItem(item))
+        return taskList.value
+      })
+      .catch((err) => {
+        toast.add({
+          severity: 'error',
+          summary: 'Error',
+          detail: err.message ?? 'Failed to refresh download task list',
+          life: 15000,
+        })
+      })
+  }
+
   onBeforeMount(() => {
-    socket.addEventListener('reconnected', () => {
+    api.addEventListener('reconnected', () => {
       refresh()
     })
 
-    socket.addEventListener('downloadTaskList', (event) => {
+    api.addEventListener('fetch_download_task_list', (event) => {
       const data = event.detail as DownloadTaskOptions[]
 
       taskList.value = data.map((item) => {
@@ -69,12 +94,12 @@ export const useDownload = defineStore('download', (store) => {
       })
     })
 
-    socket.addEventListener('createDownloadTask', (event) => {
+    api.addEventListener('create_download_task', (event) => {
       const item = event.detail as DownloadTaskOptions
       taskList.value.unshift(createTaskItem(item))
     })
 
-    socket.addEventListener('updateDownloadTask', (event) => {
+    api.addEventListener('update_download_task', (event) => {
       const item = event.detail as DownloadTaskOptions
 
       for (const task of taskList.value) {
@@ -93,12 +118,12 @@ export const useDownload = defineStore('download', (store) => {
       }
     })
 
-    socket.addEventListener('deleteDownloadTask', (event) => {
+    api.addEventListener('delete_download_task', (event) => {
       const taskId = event.detail as string
       taskList.value = taskList.value.filter((item) => item.taskId !== taskId)
     })
 
-    socket.addEventListener('completeDownloadTask', (event) => {
+    api.addEventListener('complete_download_task', (event) => {
       const taskId = event.detail as string
       const task = taskList.value.find((item) => item.taskId === taskId)
       taskList.value = taskList.value.filter((item) => item.taskId !== taskId)
diff --git a/src/hooks/socket.ts b/src/hooks/socket.ts
deleted file mode 100644
index 582a43a..0000000
--- a/src/hooks/socket.ts
+++ /dev/null
@@ -1,82 +0,0 @@
-import { globalToast } from 'hooks/toast'
-import { readonly } from 'vue'
-
-class WebSocketEvent extends EventTarget {
-  private socket: WebSocket | null
-
-  constructor() {
-    super()
-    this.createSocket()
-  }
-
-  private createSocket(isReconnect?: boolean) {
-    const api_host = location.host
-    const api_base = location.pathname.split('/').slice(0, -1).join('/')
-
-    let opened = false
-    let existingSession = window.name
-    if (existingSession) {
-      existingSession = '?clientId=' + existingSession
-    }
-
-    this.socket = readonly(
-      new WebSocket(
-        `ws${window.location.protocol === 'https:' ? 's' : ''}://${api_host}${api_base}/model-manager/ws${existingSession}`,
-      ),
-    )
-
-    this.socket.addEventListener('open', () => {
-      opened = true
-      if (isReconnect) {
-        this.dispatchEvent(new CustomEvent('reconnected'))
-      }
-    })
-
-    this.socket.addEventListener('error', () => {
-      if (this.socket) this.socket.close()
-    })
-
-    this.socket.addEventListener('close', (event) => {
-      setTimeout(() => {
-        this.socket = null
-        this.createSocket(true)
-      }, 300)
-      if (opened) {
-        this.dispatchEvent(new CustomEvent('status', { detail: null }))
-        this.dispatchEvent(new CustomEvent('reconnecting'))
-      }
-    })
-
-    this.socket.addEventListener('message', (event) => {
-      try {
-        const msg = JSON.parse(event.data)
-        if (msg.type === 'error') {
-          globalToast.value?.add({
-            severity: 'error',
-            summary: 'Error',
-            detail: msg.data,
-            life: 15000,
-          })
-        } else {
-          this.dispatchEvent(new CustomEvent(msg.type, { detail: msg.data }))
-        }
-      } catch (error) {
-        console.error(error)
-      }
-    })
-  }
-
-  addEventListener = (
-    type: string,
-    callback: CustomEventListener | null,
-    options?: AddEventListenerOptions | boolean,
-  ) => {
-    super.addEventListener(type, callback, options)
-  }
-
-  send(type: string, data: any) {
-    this.socket?.send(JSON.stringify({ type, detail: data }))
-  }
-}
-
-export const socket = new WebSocketEvent()