Release 0.0.11

.dockerignore

@@ -0,0 +1,9 @@
+logs
+dist
+doc
+node_modules
+.vscode
+.git
+.gitignore
+README.md
+*.tar.gz

Dockerfile

@@ -0,0 +1,20 @@
+FROM node:lts AS BUILD_IMAGE
+
+WORKDIR /app
+
+COPY . /app
+
+RUN npm i --registry http://registry.npmmirror.com && npm run build
+
+FROM node:lts-alpine
+
+COPY --from=BUILD_IMAGE /app/configs ./configs
+COPY --from=BUILD_IMAGE /app/package.json ./package.json
+COPY --from=BUILD_IMAGE /app/dist ./dist
+COPY --from=BUILD_IMAGE /app/node_modules ./node_modules
+
+WORKDIR /app
+
+EXPOSE 8000
+
+CMD ["npm", "start"]

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,12 +1,38 @@
 # KIMI AI Free 服务
 
+![](https://img.shields.io/github/license/llm-red-team/kimi-free-api.svg)
+![](https://img.shields.io/github/stars/llm-red-team/kimi-free-api.svg)
+![](https://img.shields.io/github/forks/llm-red-team/kimi-free-api.svg)
+![](https://img.shields.io/docker/pulls/vinlic/kimi-free-api.svg)
+
+支持高速流式输出、支持多轮对话、支持联网搜索、支持长文档解读、支持图像解析，零配置部署，多路token支持，自动清理会话痕迹。
+
+与ChatGPT接口完全兼容。
+
+## 目录
+
+* [声明](#声明)
+* [在线体验](#在线体验)
+* [效果示例](#效果示例)
+* [接入准备](#接入准备)
+  * [多账号接入](#多账号接入)
+* [Docker部署](#Docker部署)
+  * [Docker-compose部署](#Docker-compose部署)
+* [原生部署](#原生部署)
+* [接口列表](#接口列表)
+  * [对话补全](#对话补全)
+  * [文档解读](#文档解读)
+  * [图像解析](#图像解析)
+* [注意事项](#注意事项)
+  * [Nginx反代优化](#Nginx反代优化)
+
 ## 声明
 
-仅限自用，禁止对外提供服务，否则风险自担！
+仅限自用，禁止对外提供服务或商用，避免对官方造成服务压力，否则风险自担！
 
-仅限自用，禁止对外提供服务，否则风险自担！
+仅限自用，禁止对外提供服务或商用，避免对官方造成服务压力，否则风险自担！
 
-仅限自用，禁止对外提供服务，否则风险自担！
+仅限自用，禁止对外提供服务或商用，避免对官方造成服务压力，否则风险自担！
 
 ## 在线体验
 
@@ -14,14 +40,95 @@
 
 https://udify.app/chat/Po0F6BMJ15q5vu2P
 
-![example1](./doc/example-1.png)
-![example2](./doc/example-2.png)
+## 效果示例
+
+### 验明正身
+
+![验明正身](./doc/example-1.png)
+
+### 多轮对话
+
+![多轮对话](./doc/example-6.png)
+
+### 联网搜索
+
+![联网搜索](./doc/example-2.png)
+
+### 长文档解读
+
+![长文档解读](./doc/example-5.png)
+
+### 图像解析
+
+![图像解析](./doc/example-3.png)
+
+### 响应流畅度一致
+
+![响应流畅度一致](https://github.com/LLM-Red-Team/kimi-free-api/assets/20235341/48c7ec00-2b03-46c4-95d0-452d3075219b)
 
 ## 接入准备
 
-从 [kimi.moonshot.cn](https://kimi.moonshot.cn) 获取refresh_token：进入kimi随便发起一个对话，然后F12打开开发者工具，从Application > Local Storage中找到refresh_token的值，这将作为API_KEY。
+从 [kimi.moonshot.cn](https://kimi.moonshot.cn) 获取refresh_token
 
-## 安装
+进入kimi随便发起一个对话，然后F12打开开发者工具，从Application > Local Storage中找到refresh_token的值，这将作为Authorization的Bearer Token值：`Authorization: Bearer TOKEN`
+
+![example0](./doc/example-0.png)
+
+### 多账号接入
+
+目前kimi限制普通账号每3小时内只能进行30轮长文本的问答，你可以通过提供多个账号的refresh_token并使用`,`拼接提供：
+
+`Authorization: Bearer TOKEN1,TOKEN2,TOKEN3`
+
+每次请求服务会从中挑选一个。
+
+## Docker部署
+
+请准备一台具有公网IP的服务器并将8000端口开放。
+
+拉取镜像并启动服务
+
+```shell
+docker run -it -d --init --name kimi-free-api -p 8000:8000 -e TZ=Asia/Shanghai vinlic/kimi-free-api:latest
+```
+
+查看服务实时日志
+
+```shell
+docker logs -f kimi-free-api
+```
+
+重启服务
+
+```shell
+docker restart kimi-free-api
+```
+
+停止服务
+
+```shell
+docker stop kimi-free-api
+```
+
+### Docker-compose部署
+
+```yaml
+version: '3'
+
+services:
+  kimi-free-api:
+    container_name: kimi-free-api
+    image: vinlic/kimi-free-api:latest
+    restart: always
+    ports:
+      - "8000:8000"
+    environment:
+      - TZ=Asia/Shanghai
+```
+
+## 原生部署
+
+请准备一台具有公网IP的服务器并将8000端口开放。
 
 请先安装好Node.js环境并且配置好环境变量，确认node命令可用。
 
@@ -67,11 +174,15 @@ pm2 reload kimi-free-api
 pm2 stop kimi-free-api
 ```
 
-## 发起请求
+## 接口列表
 
-目前支持与openai兼容的 `/v1/chat/completions` 接口
+目前支持与openai兼容的 `/v1/chat/completions` 接口，可自行使用与openai或其他兼容的客户端接入接口，或者使用 [dify](https://dify.ai/) 等线上服务接入使用。
 
-POST /v1/chat/completions
+### 对话补全
+
+对话补全接口，与openai的 [chat-completions-api](https://platform.openai.com/docs/guides/text-generation/chat-completions-api) 兼容。
+
+**POST /v1/chat/completions**
 
 header 需要设置 Authorization 头部：
 
@@ -79,8 +190,7 @@ header 需要设置 Authorization 头部：
 Authorization: Bearer [refresh_token]
 ```
 
-JSON数据：
-
+请求数据：
 ```json
 {
     "messages": [
@@ -89,15 +199,179 @@ JSON数据：
             "content": "测试"
         }
     ],
-    // 如果使用SSE流请设置为true
+    // 是否开启联网搜索，默认false
+    "use_search": true,
+    // 如果使用SSE流请设置为true，默认false
     "stream": false
 }
 ```
 
-## 部署
+响应数据：
+```json
+{
+    "id": "cnndivilnl96vah411dg",
+    "model": "kimi",
+    "object": "chat.completion",
+    "choices": [
+        {
+            "index": 0,
+            "message": {
+                "role": "assistant",
+                "content": "你好！我是Kimi，由月之暗面科技有限公司开发的人工智能助手。我擅长中英文对话，可以帮助你获取信息、解答疑问，还能阅读和理解你提供的文件和网页内容。如果你有任何问题或需要帮助，随时告诉我！"
+            },
+            "finish_reason": "stop"
+        }
+    ],
+    "usage": {
+        "prompt_tokens": 0,
+        "completion_tokens": 0,
+        "total_tokens": 0
+    },
+    "created": 1710152062
+}
+```
 
-请准备一台具有公网IP的服务器，按照[安装](#安装)步骤部署好服务并将8000端口开放。
+### 文档解读
 
-自行使用与openai或其他兼容的客户端接入接口。
+提供一个可访问的文件URL或者BASE64_URL进行解析。
 
-或者使用dify线上服务接入使用。
+**POST /v1/chat/completions**
+
+header 需要设置 Authorization 头部：
+
+```
+Authorization: Bearer [refresh_token]
+```
+
+请求数据：
+```json
+{
+    "messages": [
+        {
+            "role": "user",
+            "content": [
+                {
+                    "type": "file",
+                    "file_url": {
+                        "url": "https://mj101-1317487292.cos.ap-shanghai.myqcloud.com/ai/test.pdf"
+                    }
+                },
+                {
+                    "type": "text",
+                    "text": "文档里说了什么？"
+                }
+            ]
+        }
+    ],
+    // 建议关闭联网搜索，防止干扰解读结果
+    "use_search": false
+}
+```
+
+响应数据：
+```json
+{
+    "id": "cnmuo7mcp7f9hjcmihn0",
+    "model": "kimi",
+    "object": "chat.completion",
+    "choices": [
+        {
+            "index": 0,
+            "message": {
+                "role": "assistant",
+                "content": "文档中包含了几个古代魔法咒语的例子，这些咒语来自古希腊和罗马时期的魔法文本，被称为PGM（Papyri Graecae Magicae）。以下是文档中提到的几个咒语的内容：\n\n1. 第一个咒语（PMG 4.1390 – 1495）描述了一个仪式，要求留下一些你吃剩的面包，将其分成七块小片，然后去到英雄、角斗士和那些死于非命的人被杀的地方。对面包片念咒并扔出去，然后从仪式地点捡起一些被污染的泥土扔进你心仪的女人的家中，之后去睡觉。咒语的内容是向命运女神（Moirai）、罗马的命运女神（Fates）和自然力量（Daemons）祈求，希望他们帮助实现愿望。\n\n2. 第二个咒语（PMG 4.1342 – 57）是一个召唤咒语，通过念出一系列神秘的名字和词语来召唤一个名为Daemon的存在，以使一个名为Tereous的人（由Apia所生）受到精神和情感上的折磨，直到她来到施法者Didymos（由Taipiam所生）的身边。\n\n3. 第三个咒语（PGM 4.1265 – 74）提到了一个名为NEPHERIĒRI的神秘名字，这个名字与爱神阿佛洛狄忒（Aphrodite）有关。为了赢得一个美丽女人的心，需要保持三天的纯洁，献上乳香，并在献祭时念出这个名字。然后，在接近那位女士时，心中默念这个名字七次，连续七天这样做，以期成功。\n\n4. 第四个咒语（PGM 4.1496 – 1）描述了在燃烧没药（myrrh）时念诵的咒语。这个咒语是向没药祈祷，希望它能够像“肉食者”和“心灵点燃者”一样，吸引一个名为[名字]的女人（她的母亲名为[名字]），让她无法安坐、饮食、注视或亲吻其他人，而是让她的心中只有施法者，直到她来到施法者身边。\n\n这些咒语反映了古代人们对魔法和超自然力量的信仰，以及他们试图通过这些咒语来影响他人情感和行为的方式。"
+            },
+            "finish_reason": "stop"
+        }
+    ],
+    "usage": {
+        "prompt_tokens": 0,
+        "completion_tokens": 0,
+        "total_tokens": 0
+    },
+    "created": 100920
+}
+```
+
+### 图像解析
+
+提供一个可访问的图像URL或者BASE64_URL进行解析。
+
+此格式兼容 [gpt-4-vision-preview](https://platform.openai.com/docs/guides/vision) API格式，您也可以用这个格式传送文档进行解析。
+
+**POST /v1/chat/completions**
+
+header 需要设置 Authorization 头部：
+
+```
+Authorization: Bearer [refresh_token]
+```
+
+请求数据：
+```json
+{
+    "messages": [
+        {
+            "role": "user",
+            "content": [
+                {
+                    "type": "image_url",
+                    "image_url": {
+                        "url": "https://www.moonshot.cn/assets/logo/normal-dark.png"
+                    }
+                },
+                {
+                    "type": "text",
+                    "text": "图像描述了什么？"
+                }
+            ]
+        }
+    ],
+    // 建议关闭联网搜索，防止干扰解读结果
+    "use_search": false
+}
+```
+
+响应数据：
+```json
+{
+    "id": "cnn6l8ilnl92l36tu8ag",
+    "model": "kimi",
+    "object": "chat.completion",
+    "choices": [
+        {
+            "index": 0,
+            "message": {
+                "role": "assistant",
+                "content": "图像中展示了“Moonshot AI”的字样，这可能是月之暗面科技有限公司（Moonshot AI）的标志或者品牌标识。通常这样的图像用于代表公司或产品，传达品牌信息。由于图像是PNG格式，它可能是一个透明背景的logo，用于网站、应用程序或其他视觉材料中。"
+            },
+            "finish_reason": "stop"
+        }
+    ],
+    "usage": {
+        "prompt_tokens": 0,
+        "completion_tokens": 0,
+        "total_tokens": 0
+    },
+    "created": 1710123627
+}
+```
+
+## 注意事项
+
+### Nginx反代优化
+
+如果您正在使用Nginx反向代理kimi-free-api，请添加以下配置项优化流的输出效果，优化体验感。
+
+```nginx
+# 关闭代理缓冲。当设置为off时，Nginx会立即将客户端请求发送到后端服务器，并立即将从后端服务器接收到的响应发送回客户端。
+proxy_buffering off;
+# 启用分块传输编码。分块传输编码允许服务器为动态生成的内容分块发送数据，而不需要预先知道内容的大小。
+chunked_transfer_encoding on;
+# 开启TCP_NOPUSH，这告诉Nginx在数据包发送到客户端之前，尽可能地发送数据。这通常在sendfile使用时配合使用，可以提高网络效率。
+tcp_nopush on;
+# 开启TCP_NODELAY，这告诉Nginx不延迟发送数据，立即发送小数据包。在某些情况下，这可以减少网络的延迟。
+tcp_nodelay on;
+# 设置保持连接的超时时间，这里设置为120秒。如果在这段时间内，客户端和服务器之间没有进一步的通信，连接将被关闭。
+keepalive_timeout 120;
+```

configs/dev/api.yml

@@ -1,8 +0,0 @@
-chatCompletion:
-  provider: zhipuai
-  model: glm-4
-  apiKey: 99b6167d7f421fc2187785503d2ffe9f.WncREpjXE26ediTw
-  contextLength: 131072
-  maxToken: 8192
-  concurrencyLimit: 5
-  waitReponseTimeout: 30000

package.json

@@ -1,7 +1,7 @@
 {
   "name": "kimi-free-api",
-  "version": "0.0.5",
-  "description": "Kimi Free Server",
+  "version": "0.0.11",
+  "description": "Kimi Free API Server",
   "type": "module",
   "main": "dist/index.js",
   "module": "dist/index.mjs",
@@ -27,7 +27,6 @@
     "date-fns": "^3.3.1",
     "eventsource-parser": "^1.1.2",
     "fs-extra": "^11.2.0",
-    "https-proxy-agent": "^7.0.4",
     "koa": "^2.15.0",
     "koa-body": "^5.0.0",
     "koa-bodyparser": "^4.4.1",
@@ -38,7 +37,6 @@
     "mime": "^4.0.1",
     "minimist": "^1.2.8",
     "randomstring": "^1.3.0",
-    "socks-proxy-agent": "^8.0.2",
     "uuid": "^9.0.1",
     "yaml": "^2.3.4"
   },

src/api/consts/exceptions.ts

@@ -2,5 +2,7 @@ export default {
     API_TEST: [-9999, 'API异常错误'],
     API_REQUEST_PARAMS_INVALID: [-2000, '请求参数非法'],
     API_REQUEST_FAILED: [-2001, '请求失败'],
-    API_TOKEN_EXPIRES: [-2002, 'Token已失效']
+    API_TOKEN_EXPIRES: [-2002, 'Token已失效'],
+    API_FILE_URL_INVALID: [-2003, '远程文件URL非法'],
+    API_FILE_EXECEEDS_SIZE: [-2004, '远程文件超出大小']
 }

src/api/controllers/chat.ts

@@ -1,5 +1,7 @@
 import { PassThrough } from "stream";
+import path from 'path';
 import _ from 'lodash';
+import mime from 'mime';
 import axios, { AxiosResponse } from 'axios';
 
 import APIException from "@/lib/exceptions/APIException.ts";
@@ -8,46 +10,112 @@ import { createParser } from 'eventsource-parser'
 import logger from '@/lib/logger.ts';
 import util from '@/lib/util.ts';
 
+// 模型名称
+const MODEL_NAME = 'kimi';
+// access_token有效期
 const ACCESS_TOKEN_EXPIRES = 300;
+// 伪装headers
 const FAKE_HEADERS = {
+  'Accept': '*/*',
+  'Accept-Encoding': 'gzip, deflate, br, zstd',
+  'Accept-Language': 'zh-CN,zh;q=0.9',
+  'Origin': 'https://kimi.moonshot.cn',
+  'Cookie': util.generateCookie(),
+  'R-Timezone': 'Asia/Shanghai',
   'Sec-Ch-Ua': '"Chromium";v="122", "Not(A:Brand";v="24", "Google Chrome";v="122"',
   'Sec-Ch-Ua-Mobile': '?0',
   'Sec-Ch-Ua-Platform': '"Windows"',
+  'Sec-Fetch-Dest': 'empty',
+  'Sec-Fetch-Mode': 'cors',
+  'Sec-Fetch-Site': 'same-origin',
   'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36'
 };
+// 文件最大大小
+const FILE_MAX_SIZE = 100 * 1024 * 1024;
+// access_token映射
 const accessTokenMap = new Map();
+// access_token请求队列映射
+const accessTokenRequestQueueMap: Record<string, Function[]> = {};
 
+/**
+ * 请求access_token
+ * 
+ * 使用refresh_token去刷新获得access_token
+ * 
+ * @param refreshToken 用于刷新access_token的refresh_token
+ */
 async function requestToken(refreshToken: string) {
-  const result = await axios.get('https://kimi.moonshot.cn/api/auth/token/refresh', {
-    headers: {
-      Authorization: `Bearer ${refreshToken}`,
-      Referer: 'https://kimi.moonshot.cn',
-      ...FAKE_HEADERS
-    },
-    validateStatus: () => true
-  });
-  const {
-    access_token,
-    refresh_token
-  } = checkResult(result, refreshToken);
-  return {
-    accessToken: access_token,
-    refreshToken: refresh_token,
-    refreshTime: util.unixTimestamp() + ACCESS_TOKEN_EXPIRES
-  }
+  if (accessTokenRequestQueueMap[refreshToken])
+    return new Promise(resolve => accessTokenRequestQueueMap[refreshToken].push(resolve));
+  accessTokenRequestQueueMap[refreshToken] = [];
+  logger.info(`Refresh token: ${refreshToken}`);
+  const result = await (async () => {
+    const result = await axios.get('https://kimi.moonshot.cn/api/auth/token/refresh', {
+      headers: {
+        Authorization: `Bearer ${refreshToken}`,
+        Referer: 'https://kimi.moonshot.cn',
+        ...FAKE_HEADERS
+      },
+      timeout: 15000,
+      validateStatus: () => true
+    });
+    const {
+      access_token,
+      refresh_token
+    } = checkResult(result, refreshToken);
+    return {
+      accessToken: access_token,
+      refreshToken: refresh_token,
+      refreshTime: util.unixTimestamp() + ACCESS_TOKEN_EXPIRES
+    }
+  })()
+    .then(result => {
+      if(accessTokenRequestQueueMap[refreshToken]) {
+        accessTokenRequestQueueMap[refreshToken].forEach(resolve => resolve(result));
+        delete accessTokenRequestQueueMap[refreshToken];
+      }
+      logger.success(`Refresh successful`);
+      return result;
+    })
+    .catch(err => {
+      if(accessTokenRequestQueueMap[refreshToken]) {
+        accessTokenRequestQueueMap[refreshToken].forEach(resolve => resolve(err));
+        delete accessTokenRequestQueueMap[refreshToken];
+      }
+      return err;
+    });
+  if(_.isError(result))
+    throw result;
+  return result;
 }
 
+/**
+ * 获取缓存中的access_token
+ * 
+ * 避免短时间大量刷新token，未加锁，如果有并发要求还需加锁
+ * 
+ * @param refreshToken 用于刷新access_token的refresh_token
+ */
 async function acquireToken(refreshToken: string): Promise<string> {
   let result = accessTokenMap.get(refreshToken);
   if (!result) {
     result = await requestToken(refreshToken);
     accessTokenMap.set(refreshToken, result);
   }
-  if (util.unixTimestamp() > result.refreshTime)
+  if (util.unixTimestamp() > result.refreshTime) {
     result = await requestToken(refreshToken);
+    accessTokenMap.set(refreshToken, result);
+  }
   return result.accessToken;
 }
 
+/**
+ * 创建会话
+ * 
+ * 创建临时的会话用于对话补全
+ * 
+ * @param refreshToken 用于刷新access_token的refresh_token
+ */
 async function createConversation(name: string, refreshToken: string) {
   const token = await acquireToken(refreshToken);
   const result = await axios.post('https://kimi.moonshot.cn/api/chat', {
@@ -59,6 +127,7 @@ async function createConversation(name: string, refreshToken: string) {
       Referer: 'https://kimi.moonshot.cn',
       ...FAKE_HEADERS
     },
+    timeout: 15000,
     validateStatus: () => true
   });
   const {
@@ -67,6 +136,13 @@ async function createConversation(name: string, refreshToken: string) {
   return convId;
 }
 
+/**
+ * 移除会话
+ * 
+ * 在对话流传输完毕后移除会话，避免创建的会话出现在用户的对话列表中
+ * 
+ * @param refreshToken 用于刷新access_token的refresh_token
+ */
 async function removeConversation(convId: string, refreshToken: string) {
   const token = await acquireToken(refreshToken);
   const result = await axios.delete(`https://kimi.moonshot.cn/api/chat/${convId}`, {
@@ -75,17 +151,34 @@ async function removeConversation(convId: string, refreshToken: string) {
       Referer: `https://kimi.moonshot.cn/chat/${convId}`,
       ...FAKE_HEADERS
     },
+    timeout: 15000,
     validateStatus: () => true
   });
   checkResult(result, refreshToken);
 }
 
+/**
+ * 同步对话补全
+ * 
+ * @param messages 参考gpt系列消息格式，多轮对话请完整提供上下文
+ * @param refreshToken 用于刷新access_token的refresh_token
+ * @param useSearch 是否开启联网搜索
+ */
 async function createCompletion(messages: any[], refreshToken: string, useSearch = true) {
   logger.info(messages);
+
+  // 提取引用文件URL并上传kimi获得引用的文件ID列表
+  const refFileUrls = extractRefFileUrls(messages);
+  const refs = refFileUrls.length ? await Promise.all(refFileUrls.map(fileUrl => uploadFile(fileUrl, refreshToken))) : [];
+
+  // 创建会话
   const convId = await createConversation(`cmpl-${util.uuid(false)}`, refreshToken);
+
+  // 请求流
   const token = await acquireToken(refreshToken);
   const result = await axios.post(`https://kimi.moonshot.cn/api/chat/${convId}/completion/stream`, {
     messages: messagesPrepare(messages),
+    refs,
     use_search: useSearch
   }, {
     headers: {
@@ -93,23 +186,50 @@ async function createCompletion(messages: any[], refreshToken: string, useSearch
       Referer: `https://kimi.moonshot.cn/chat/${convId}`,
       ...FAKE_HEADERS
     },
+    // 120秒超时
+    timeout: 120000,
     validateStatus: () => true,
     responseType: 'stream'
   });
+
+  const streamStartTime = util.timestamp();
+  // 接收流为输出文本
   const answer = await receiveStream(convId, result.data);
+  logger.success(`Stream has completed transfer ${util.timestamp() - streamStartTime}ms`);
+
+  // 异步移除会话，如果消息不合规，此操作可能会抛出数据库错误异常，请忽略
   removeConversation(convId, refreshToken)
-      .catch(err => console.error(err));
+    .catch(err => console.error(err));
+
   return answer;
 }
 
+/**
+ * 流式对话补全
+ * 
+ * @param messages 参考gpt系列消息格式，多轮对话请完整提供上下文
+ * @param refreshToken 用于刷新access_token的refresh_token
+ * @param useSearch 是否开启联网搜索
+ */
 async function createCompletionStream(messages: any[], refreshToken: string, useSearch = true) {
   logger.info(messages);
+
+  // 提取引用文件URL并上传kimi获得引用的文件ID列表
+  const refFileUrls = extractRefFileUrls(messages);
+  const refs = refFileUrls.length ? await Promise.all(refFileUrls.map(fileUrl => uploadFile(fileUrl, refreshToken))) : [];
+
+  // 创建会话
   const convId = await createConversation(`cmpl-${util.uuid(false)}`, refreshToken);
+
+  // 请求流
   const token = await acquireToken(refreshToken);
   const result = await axios.post(`https://kimi.moonshot.cn/api/chat/${convId}/completion/stream`, {
     messages: messagesPrepare(messages),
+    refs,
     use_search: useSearch
   }, {
+    // 120秒超时
+    timeout: 120000,
     headers: {
       Authorization: `Bearer ${token}`,
       Referer: `https://kimi.moonshot.cn/chat/${convId}`,
@@ -118,27 +238,219 @@ async function createCompletionStream(messages: any[], refreshToken: string, use
     validateStatus: () => true,
     responseType: 'stream'
   });
+  const streamStartTime = util.timestamp();
+  // 创建转换流将消息格式转换为gpt兼容格式
   return createTransStream(convId, result.data, () => {
+    logger.success(`Stream has completed transfer ${util.timestamp() - streamStartTime}ms`);
+    // 流传输结束后异步移除会话，如果消息不合规，此操作可能会抛出数据库错误异常，请忽略
     removeConversation(convId, refreshToken)
       .catch(err => console.error(err));
   });
 }
 
+/**
+ * 提取消息中引用的文件URL
+ * 
+ * @param messages 参考gpt系列消息格式，多轮对话请完整提供上下文
+ */
+function extractRefFileUrls(messages: any[]) {
+  return messages.reduce((urls, message) => {
+    if (_.isArray(message.content)) {
+      message.content.forEach(v => {
+        if (!_.isObject(v) || !['file', 'image_url'].includes(v['type']))
+          return;
+        // kimi-free-api支持格式
+        if (v['type'] == 'file' && _.isObject(v['file_url']) && _.isString(v['file_url']['url']))
+          urls.push(v['file_url']['url']);
+        // 兼容gpt-4-vision-preview API格式
+        else if (v['type'] == 'image_url' && _.isObject(v['image_url']) && _.isString(v['image_url']['url']))
+          urls.push(v['image_url']['url']);
+      });
+    }
+    return urls;
+  }, []);
+}
+
+/**
+ * 消息预处理
+ * 
+ * 由于接口只取第一条消息，此处会将多条消息合并为一条，实现多轮对话效果
+ * user:旧消息1
+ * assistant:旧消息2
+ * user:新消息
+ * 
+ * @param messages 参考gpt系列消息格式，多轮对话请完整提供上下文
+ */
 function messagesPrepare(messages: any[]) {
   const content = messages.reduce((content, message) => {
+    if (_.isArray(message.content)) {
+      return message.content.reduce((_content, v) => {
+        if (!_.isObject(v) || v['type'] != 'text')
+          return _content;
+        return _content + (v['text'] || '');
+      }, content);
+    }
     return content += `${message.role || 'user'}:${wrapUrlsToTags(message.content)}\n`;
   }, '');
+
   return [
     { role: 'user', content }
   ]
 }
 
+/**
+ * 将消息中的URL包装为HTML标签
+ * 
+ * kimi网页版中会自动将url包装为url标签用于处理状态，此处也得模仿处理，否则无法成功解析
+ * 
+ * @param content 消息内容
+ */
 function wrapUrlsToTags(content: string) {
   return content.replace(/https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/gi, url => `<url id="" type="url" status="" title="" wc="">${url}</url>`);
 }
 
+/**
+ * 获取预签名的文件URL
+ * 
+ * @param filename 文件名称
+ * @param refreshToken 用于刷新access_token的refresh_token
+ */
+async function preSignUrl(filename: string, refreshToken: string) {
+  const token = await acquireToken(refreshToken);
+  const result = await axios.post('https://kimi.moonshot.cn/api/pre-sign-url', {
+    action: 'file',
+    name: filename
+  }, {
+    timeout: 15000,
+    headers: {
+      Authorization: `Bearer ${token}`,
+      Referer: `https://kimi.moonshot.cn`,
+      ...FAKE_HEADERS
+    },
+    validateStatus: () => true
+  });
+  return checkResult(result, refreshToken);
+}
+
+/**
+ * 预检查文件URL有效性
+ * 
+ * @param fileUrl 文件URL
+ */
+async function checkFileUrl(fileUrl: string) {
+  if (util.isBASE64Data(fileUrl))
+    return;
+  const result = await axios.head(fileUrl, {
+    timeout: 15000,
+    validateStatus: () => true
+  });
+  if (result.status >= 400)
+    throw new APIException(EX.API_FILE_URL_INVALID, `File ${fileUrl} is not valid: [${result.status}] ${result.statusText}`);
+  // 检查文件大小
+  if (result.headers && result.headers['content-length']) {
+    const fileSize = parseInt(result.headers['content-length'], 10);
+    if (fileSize > FILE_MAX_SIZE)
+      throw new APIException(EX.API_FILE_EXECEEDS_SIZE, `File ${fileUrl} is not valid`);
+  }
+}
+
+/**
+ * 上传文件
+ * 
+ * @param fileUrl 文件URL
+ * @param refreshToken 用于刷新access_token的refresh_token
+ */
+async function uploadFile(fileUrl: string, refreshToken: string) {
+  // 预检查远程文件URL可用性
+  await checkFileUrl(fileUrl);
+
+  let filename, fileData, mimeType;
+  // 如果是BASE64数据则直接转换为Buffer
+  if (util.isBASE64Data(fileUrl)) {
+    mimeType = util.extractBASE64DataFormat(fileUrl);
+    const ext = mime.getExtension(mimeType);
+    filename = `${util.uuid()}.${ext}`;
+    fileData = Buffer.from(util.removeBASE64DataHeader(fileUrl), 'base64');
+  }
+  // 下载文件到内存，如果您的服务器内存很小，建议考虑改造为流直传到下一个接口上，避免停留占用内存
+  else {
+    filename = path.basename(fileUrl);
+    ({ data: fileData } = await axios.get(fileUrl, {
+      responseType: 'arraybuffer',
+      // 100M限制
+      maxContentLength: FILE_MAX_SIZE,
+      // 60秒超时
+      timeout: 60000
+    }));
+  }
+
+  // 获取预签名文件URL
+  const {
+    url: uploadUrl,
+    object_name: objectName
+  } = await preSignUrl(filename, refreshToken);
+
+  // 获取文件的MIME类型
+  mimeType = mimeType || mime.getType(filename);
+  // 上传文件到目标OSS
+  const token = await acquireToken(refreshToken);
+  let result = await axios.request({
+    method: 'PUT',
+    url: uploadUrl,
+    data: fileData,
+    // 100M限制
+    maxBodyLength: FILE_MAX_SIZE,
+    // 60秒超时
+    timeout: 60000,
+    headers: {
+      'Content-Type': mimeType,
+      Authorization: `Bearer ${token}`,
+      Referer: `https://kimi.moonshot.cn`,
+      ...FAKE_HEADERS
+    },
+    validateStatus: () => true
+  });
+  checkResult(result, refreshToken);
+
+  // 获取文件上传结果
+  result = await axios.post('https://kimi.moonshot.cn/api/file', {
+    type: 'file',
+    name: filename,
+    object_name: objectName,
+    timeout: 15000
+  }, {
+    headers: {
+      Authorization: `Bearer ${token}`,
+      Referer: `https://kimi.moonshot.cn`,
+      ...FAKE_HEADERS
+    }
+  });
+  const { id: fileId } = checkResult(result, refreshToken);
+
+  // 处理文件转换
+  result = await axios.post('https://kimi.moonshot.cn/api/file/parse_process', {
+    ids: [fileId],
+    timeout: 120000
+  }, {
+    headers: {
+      Authorization: `Bearer ${token}`,
+      Referer: `https://kimi.moonshot.cn`,
+      ...FAKE_HEADERS
+    }
+  });
+  checkResult(result, refreshToken);
+
+  return fileId;
+}
+
+/**
+ * 检查请求结果
+ * 
+ * @param result 结果
+ * @param refreshToken 用于刷新access_token的refresh_token
+ */
 function checkResult(result: AxiosResponse, refreshToken: string) {
-  if(result.status == 401) {
+  if (result.status == 401) {
     accessTokenMap.delete(refreshToken);
     throw new APIException(EX.API_REQUEST_FAILED);
   }
@@ -152,33 +464,45 @@ function checkResult(result: AxiosResponse, refreshToken: string) {
   throw new APIException(EX.API_REQUEST_FAILED, `[请求kimi失败]: ${message}`);
 }
 
+/**
+ * 从流接收完整的消息内容
+ * 
+ * @param convId 会话ID
+ * @param stream 消息流
+ */
 async function receiveStream(convId: string, stream: any) {
   return new Promise((resolve, reject) => {
+    // 第一条消息初始化
     const data = {
       id: convId,
-      model: 'kimi',
+      model: MODEL_NAME,
       object: 'chat.completion',
       choices: [
         { index: 0, message: { role: 'assistant', content: '' }, finish_reason: 'stop' }
       ],
-      created: parseInt(performance.now() as any)
+      usage: { prompt_tokens: 0, completion_tokens: 0, total_tokens: 0 },
+      created: util.unixTimestamp()
     };
     let refContent = '';
     const parser = createParser(event => {
       try {
         if (event.type !== "event") return;
+        // 解析JSON
         const result = _.attempt(() => JSON.parse(event.data));
         if (_.isError(result))
-          throw new Error(`stream response invalid: ${event.data}`);
+          throw new Error(`Stream response invalid: ${event.data}`);
+        // 处理消息
         if (result.event == 'cmpl') {
           data.choices[0].message.content += result.text;
         }
+        // 处理结束或错误
         else if (result.event == 'all_done' || result.event == 'error') {
           data.choices[0].message.content += (result.event == 'error' ? '\n[内容由于不合规被停止生成，我们换个话题吧]' : '') + (refContent ? `\n\n搜索结果来自：\n${refContent}` : '');
           refContent = '';
           resolve(data);
         }
-        else if(result.event == 'search_plus' && result.msg && result.msg.type == 'get_res')
+        // 处理联网搜索
+        else if (result.event == 'search_plus' && result.msg && result.msg.type == 'get_res')
           refContent += `${result.msg.title}(${result.msg.url})\n`;
         // else
         //   logger.warn(result.event, result);
@@ -188,19 +512,31 @@ async function receiveStream(convId: string, stream: any) {
         reject(err);
       }
     });
+    // 将流数据喂给SSE转换器
     stream.on("data", buffer => parser.feed(buffer.toString()));
     stream.once("error", err => reject(err));
     stream.once("close", () => resolve(data));
   });
 }
 
+/**
+ * 创建转换流
+ * 
+ * 将流格式转换为gpt兼容流格式
+ * 
+ * @param convId 会话ID
+ * @param stream 消息流
+ * @param endCallback 传输结束回调
+ */
 function createTransStream(convId: string, stream: any, endCallback?: Function) {
-  const created = parseInt(performance.now() as any);
+  // 消息创建时间
+  const created = util.unixTimestamp();
+  // 创建转换流
   const transStream = new PassThrough();
   let searchFlag = false;
   !transStream.closed && transStream.write(`data: ${JSON.stringify({
     id: convId,
-    model: 'kimi',
+    model: MODEL_NAME,
     object: 'chat.completion.chunk',
     choices: [
       { index: 0, delta: { role: 'assistant', content: '' }, finish_reason: null }
@@ -210,50 +546,59 @@ function createTransStream(convId: string, stream: any, endCallback?: Function)
   const parser = createParser(event => {
     try {
       if (event.type !== "event") return;
+      // 解析JSON
       const result = _.attempt(() => JSON.parse(event.data));
       if (_.isError(result))
-        throw new Error(`stream response invalid: ${event.data}`);
+        throw new Error(`Stream response invalid: ${event.data}`);
+      // 处理消息
       if (result.event == 'cmpl') {
         const data = `data: ${JSON.stringify({
           id: convId,
-          model: 'kimi',
+          model: MODEL_NAME,
           object: 'chat.completion.chunk',
           choices: [
             { index: 0, delta: { content: (searchFlag ? '\n' : '') + result.text }, finish_reason: null }
           ],
           created
         })}\n\n`;
-        if(searchFlag)
+        if (searchFlag)
           searchFlag = false;
         !transStream.closed && transStream.write(data);
       }
+      // 处理结束或错误
       else if (result.event == 'all_done' || result.event == 'error') {
         const data = `data: ${JSON.stringify({
           id: convId,
-          model: 'kimi',
+          model: MODEL_NAME,
           object: 'chat.completion.chunk',
           choices: [
-            { index: 0, delta: result.event == 'error' ? {
-              content: '\n[内容由于不合规被停止生成，我们换个话题吧]'
-            } : {}, finish_reason: 'stop' }
+            {
+              index: 0, delta: result.event == 'error' ? {
+                content: '\n[内容由于不合规被停止生成，我们换个话题吧]'
+              } : {}, finish_reason: 'stop'
+            }
           ],
+          usage: { prompt_tokens: 0, completion_tokens: 0, total_tokens: 0 },
           created
         })}\n\n`;
         !transStream.closed && transStream.write(data);
         !transStream.closed && transStream.end('data: [DONE]\n\n');
         endCallback && endCallback();
       }
-      else if(result.event == 'search_plus' && result.msg && result.msg.type == 'get_res') {
-        if(!searchFlag)
+      // 处理联网搜索
+      else if (result.event == 'search_plus' && result.msg && result.msg.type == 'get_res') {
+        if (!searchFlag)
           searchFlag = true;
         const data = `data: ${JSON.stringify({
           id: convId,
-          model: 'kimi',
+          model: MODEL_NAME,
           object: 'chat.completion.chunk',
           choices: [
-            { index: 0, delta: {
-              content: `检索 ${result.msg.title}(${result.msg.url}) ...\n`
-            }, finish_reason: null }
+            {
+              index: 0, delta: {
+                content: `检索 ${result.msg.title}(${result.msg.url}) ...\n`
+              }, finish_reason: null
+            }
           ],
           created
         })}\n\n`;
@@ -267,14 +612,25 @@ function createTransStream(convId: string, stream: any, endCallback?: Function)
       !transStream.closed && transStream.end('\n\n');
     }
   });
+  // 将流数据喂给SSE转换器
   stream.on("data", buffer => parser.feed(buffer.toString()));
   stream.once("error", () => !transStream.closed && transStream.end('data: [DONE]\n\n'));
   stream.once("close", () => !transStream.closed && transStream.end('data: [DONE]\n\n'));
   return transStream;
 }
 
+/**
+ * Token切分
+ * 
+ * @param authorization 认证字符串
+ */
+function tokenSplit(authorization: string) {
+  return authorization.replace('Bearer ', '').split(',');
+}
+
 export default {
   createConversation,
   createCompletion,
-  createCompletionStream
+  createCompletionStream,
+  tokenSplit
 };

src/api/routes/chat.ts

@@ -15,18 +15,19 @@ export default {
             request
                 .validate('body.messages', _.isArray)
                 .validate('headers.authorization', _.isString)
-            const token = request.headers.authorization;
-            const refreshToken = token.replace('Bearer ', '');
-            logger.info(`Refresh token: ${refreshToken}`);
+            // refresh_token切分
+            const tokens = chat.tokenSplit(request.headers.authorization);
+            // 随机挑选一个refresh_token
+            const token = _.sample(tokens);
             const messages =  request.body.messages;
             if (request.body.stream) {
-                const stream = await chat.createCompletionStream(request.body.messages, refreshToken, request.body.use_search);
+                const stream = await chat.createCompletionStream(request.body.messages, token, request.body.use_search);
                 return new Response(stream, {
                     type: "text/event-stream"
                 });
             }
             else
-                return await chat.createCompletion(messages, refreshToken, request.body.use_search);
+                return await chat.createCompletion(messages, token, request.body.use_search);
         }
 
     }

src/index.ts

@@ -6,7 +6,6 @@ import "@/lib/initialize.ts";
 import server from "@/lib/server.ts";
 import routes from "@/api/routes/index.ts";
 import logger from "@/lib/logger.ts";
-import util from "@/lib/util.ts";
 
 const startupTime = performance.now();
 
@@ -23,7 +22,7 @@ const startupTime = performance.now();
   await server.listen();
 
   config.service.bindAddress &&
-    logger.success("service bind address:", config.service.bindAddress);
+    logger.success("Service bind address:", config.service.bindAddress);
 })()
   .then(() =>
     logger.success(

src/lib/config.ts

@@ -1,6 +1,5 @@
 import serviceConfig from "./configs/service-config.ts";
 import systemConfig from "./configs/system-config.ts";
-import apiConfig from "./configs/api-config.ts";
 
 class Config {
     
@@ -10,9 +9,6 @@ class Config {
     /** 系统配置 */
     system = systemConfig;
 
-    /** API配置 */
-    api = apiConfig;
-
 }
 
 export default new Config();

src/lib/configs/api-config.ts

@@ -1,85 +0,0 @@
-import path from 'path';
-
-import fs from 'fs-extra';
-import yaml from 'yaml';
-import _ from 'lodash';
-
-import environment from '@/lib/environment.ts';
-
-const CONFIG_PATH = path.join(path.resolve(), 'configs/', environment.env, "/api.yml");
-
-export interface ProxyAgent {
-    enable?: boolean;
-    protocol?: string;
-    host?: string;
-    port?: number;
-}
-
-export class ChatCompletionConfig {
-
-    /** 服务提供商 */
-    provider: string;
-    /** 调用地址 */
-    url: string;
-    /** API密钥 */
-    apiKey: string;
-    /** API版本号 */
-    apiVersion: string;
-    /** 模型名称 */
-    model: string;
-    /** 上下文长度 */
-    contextLength: number;
-    /** 单次最大token数 */
-    maxToken: number;
-    /** 并行请求数 */
-    concurrencyLimit: number;
-    /** 等待响应超时时间（毫秒） */
-    waitReponseTimeout: number;
-    /** 网络代理 */
-    proxyAgent: ProxyAgent | null;
-
-    constructor(options?: any) {
-        const { provider, url, apiKey, apiVersion, model, contextLength, concurrencyLimit, waitReponseTimeout, proxyAgent } = options || {};
-        this.provider = _.defaultTo(provider, 'zhipuai');
-        this.url = _.defaultTo(url, 'https://open.bigmodel.cn/api/paas/v4/chat/completions');
-        this.apiKey = _.defaultTo(apiKey, '');
-        this.apiVersion = _.defaultTo(apiVersion, '');
-        this.model = _.defaultTo(model, 'glm-4');
-        this.contextLength = _.defaultTo(contextLength, 131072);
-        this.concurrencyLimit = _.defaultTo(concurrencyLimit, 100);
-        this.waitReponseTimeout = _.defaultTo(waitReponseTimeout, 30000);
-        this.proxyAgent = _.defaultTo(proxyAgent, null);
-    }
-
-    static create(value) {
-        return ChatCompletionConfig.isInstance(value) ? value : new ChatCompletionConfig(value);
-    }
-
-    static isInstance(value) {
-        return value instanceof ChatCompletionConfig;
-    }
-
-}
-
-/**
- * API配置
- */
-export class APIConfig {
-
-    /** 聊天补全配置 */
-    chatCompletion: ChatCompletionConfig;
-
-    constructor(options?: any) {
-        const { chatCompletion } = options || {};
-        this.chatCompletion = ChatCompletionConfig.create(chatCompletion);
-    }
-
-    static load() {
-        if(!fs.pathExistsSync(CONFIG_PATH)) return new APIConfig();
-        const data = yaml.parse(fs.readFileSync(CONFIG_PATH).toString());
-        return new APIConfig(data);
-    }
-
-}
-
-export default APIConfig.load();

src/lib/util.ts

@@ -12,10 +12,7 @@ import CRC32 from 'crc-32';
 import randomstring from 'randomstring';
 import _ from 'lodash';
 import { CronJob } from 'cron';
-import { SocksProxyAgent } from 'socks-proxy-agent';
-import { HttpsProxyAgent } from 'https-proxy-agent';
 
-import type { ProxyAgent } from './configs/api-config.ts';
 import HTTP_STATUS_CODE from './http-status-codes.ts';
 
 const autoIdMap = new Map();
@@ -50,6 +47,20 @@ const util = {
         return value.headers ? (value.headers["content-type"] || value.headers["Content-Type"]) : null;
     },
 
+    generateCookie() {
+        const timestamp = util.unixTimestamp();
+        const items = [
+            `Hm_lvt_4532beacc312859e0aa3e4a80566b706=${timestamp - Math.round(Math.random() * 2592000)}`,
+            `Hm_lvt_358cae4815e85d48f7e8ab7f3680a74b=${timestamp - Math.round(Math.random() * 2592000)}`,
+            `_ga=GA1.1.${util.generateRandomString({ length: 10, charset: 'numeric' })}.${timestamp - Math.round(Math.random() * 2592000)}`,
+            `_ga_31QPQG2YYD=GS1.1.${timestamp - Math.round(Math.random() * 2592000)}.17.0.${timestamp - Math.round(Math.random() * 2592000)}.0.0.0`,
+            `Hm_lpvt_4532beacc312859e0aa3e4a80566b706=${timestamp - Math.round(Math.random() * 2592000)}`,
+            `Hm_lpvt_358cae4815e85d48f7e8ab7f3680a74b=${timestamp - Math.round(Math.random() * 2592000)}`,
+            `_ga_YXD8W70SZP=GS1.1.${timestamp - Math.round(Math.random() * 2592000)}.35.1.${timestamp - Math.round(Math.random() * 2592000)}.0.0.0`
+        ];
+        return items.join('; ');
+    },
+
     mimeToExtension(value: string) {
         let extension = mime.getExtension(value);
         if(extension == "mpga")
@@ -67,21 +78,6 @@ const util = {
         return new CronJob(cronPatterns, () => callback(), null, false, "Asia/Shanghai");
     },
 
-    createProxyAgent(options: ProxyAgent) {
-        const { enable, protocol, host, port } = options;
-        if(enable === false)
-            return null;
-        switch(protocol) {
-            case "socks5":
-                return new SocksProxyAgent(`${protocol}://${host}:${port}`);
-            case "http":    
-            case "https":
-                return new HttpsProxyAgent(`${protocol}://${host}:${port}`);
-            default:
-                throw new Error(`protocol ${protocol} is not supported`);
-        }
-    },
-
     getDateString(format = "yyyy-MM-dd", date = new Date()) {
         return dateFormat(date, format);
     },
@@ -154,18 +150,18 @@ const util = {
         return !_.isUndefined(value) && /^[a-zA-Z0-9\/\+]+(=?)+$/.test(value);
     },
 
-    isBASE64Image(value) {
-        return /^data:image/.test(value);
+    isBASE64Data(value) {
+        return /^data:/.test(value);
     },
 
-    extractBASE64ImageFormat(value): string | null {
-        const match = value.trim().match(/^data:image\/(.+);base64,/);
+    extractBASE64DataFormat(value): string | null {
+        const match = value.trim().match(/^data:(.+);base64,/);
         if(!match) return null;
         return match[1];
     },
 
-    removeBASE64ImageHeader(value): string {
-        return value.replace(/^data:image\/(.+);base64,/, "");
+    removeBASE64DataHeader(value): string {
+        return value.replace(/^data:(.+);base64,/, "");
     },
 
     isDataString(value): boolean {