1.斗鱼弹幕协议
到斗鱼官方开放平台看斗鱼通讯协议 ,网址“https://open.douyu.com/source/api/63” ,登录后可查看
所以根据斗鱼协议做编码函数:
def msg_encode(msg): #消息以 \0 结尾,并以utf-8编码 msg = msg + '\0' msg_bytes = msg.encode('utf-8') #消息长度 + 头部长度8 length_bytes = int.to_bytes(len(msg) + 8, 4, byteorder='little') #斗鱼客户端发送消息类型 689 type = 689 type_bytes = int.to_bytes(type, 2, byteorder='little') # 加密字段与保留字段,默认 0 长度各 1 end_bytes = int.to_bytes(0, 1, byteorder='little') #按顺序相加 消息长度 + 消息长度 + 消息类型 + 加密字段 + 保留字段 head_bytes = length_bytes + length_bytes + type_bytes + end_bytes + end_bytes #消息头部拼接消息内容 data = head_bytes + msg_bytes return data
然后根据斗鱼协议做解码函数:
def msg_decode(msg_bytes): #定义一个游标位置 cursor = 0 msg = [] while cursor < len(msg_bytes): #根据斗鱼协议 ,报文 前四位与第二个四位,都是消息长度,取前四位 ,转化成整型 content_length = int.from_bytes(msg_bytes[cursor: (cursor + 4) - 1], byteorder='little') #报文长度不包含前4位,从第5位开始截取消息长度的字节流,并扣除前8位的协议头 ,取出正文,用utf-8编码成字符串 content = msg_bytes[(cursor + 4) + 8:(cursor + 4) + content_length - 1].decode(encoding='utf-8', errors='ignore') msg.append(content) cursor = (cursor + 4) + content_length # print(msg) return msg
解码后的消息需要反序列化:
def msg_format(msg_str): try: msg_dict = {} msg_list = msg_str.split('/')[0:-1] for msg in msg_list: msg = msg.replace('@s', '/').replace('@A', '@') msg_tmp = msg.split('@=') msg_dict[msg_tmp[0]] = msg_tmp[1] return msg_dict except Exception as e: print(str(e))
2.抓包分析
建议通过chrome开发者工具抓包,或者使用fiddler抓包 ,网页的东西,直接用chrome更方便
为什么不用斗鱼开放平台提供的api直接用呢,因为api是面向注册的开发者的 ,api都需要申请使用 ,普通用户只能抓包分析通用接口
分析:
wsproxy.douyu.com中交互消息可以获得多个弹幕服务器地址,我们直接取一个就行,不需要在程序中实现实时分析
然后分析danmuproxy.douyu.com连接中详细交互信息 ,实现与服务器交互
匿名登录时弹幕中礼物消息可能默认被屏蔽,需在登录时提交开启指令,或登录后提交开启指令
弹幕消息类型与指令非常丰富 ,这里举例简单的消息和指令,详细可以继续分析
结果如下:
登录:type@=loginreq/roomid@=74751/dfl@=/username@=visitor8243989/uid@=1132317461/ver@=20190610/aver@=218101901/ct@=0/
##匿名分配的username与uid可以从wsproxy.douyu.com中交互消息获取,也可直接自定义提交就行
退出登录:type@=logout/
心跳消息:type@=mrkl/
加入组消息:type@=joingroup/rid@=74751/gid@=-9999/ #gid默认1 ,此处改成 - 9999 改成海量弹幕模式
屏蔽礼物消息:type@=dmfbdreq/dfl@=sn@AA=105@ASss@AA=1@AS@Ssn@AA=106@ASss@AA=1@AS@Ssn@AA=107@ASss@AA=1@AS@Ssn@AA=108@ASss@AA=1@AS@Ssn@AA=110@ASss@AA=1@AS@Ssn@AA=901@ASss@AA=1@AS@S/
开启礼物消息:type@=dmfbdreq/dfl@=sn@AA=105@ASss@AA=0@AS@Ssn@AA=106@ASss@AA=0@AS@Ssn@AA=107@ASss@AA=0@AS@Ssn@AA=108@ASss@AA=0@AS@Ssn@AA=110@ASss@AA=0@AS@Ssn@AA=901@ASss@AA=0@AS@S/
##开启与屏蔽礼物可以详细控制,可以逐项尝试分析
注:登录消息中有个字段/dfl@=,此处直接加入屏蔽礼物或开启礼物指令中相应dfl@=后面的内容 ,即可在登录时控制礼物屏蔽或开启
3.礼物消息处理
获取斗鱼礼物类型,需抓包分析来源网址
url1 = 'https://webconf.douyucdn.cn/resource/common/gift/flash/gift_effect.json'
url2 = 'https://webconf.douyucdn.cn/resource/common/prop_gift_list/prop_gift_config.json'
将获取到的礼物json处理一下,合并且去除不需要信息 ,做成字典:
def get_gift_dict(): gift_json = {} gift_json1 = requests.get('https://webconf.douyucdn.cn/resource/common/gift/flash/gift_effect.json').text gift_json2 = requests.get('https://webconf.douyucdn.cn/resource/common/prop_gift_list/prop_gift_config.json').text gift_json1=gift_json1.replace('DYConfigCallback(','')[0:-2] gift_json2=gift_json2.replace('DYConfigCallback(','')[0:-2] gift_json1 = json.loads(gift_json1)['data']['flashConfig'] gift_json2= json.loads(gift_json2)['data'] for gift in gift_json1: gift_json[gift] = gift_json1[gift]['name'] for gift in gift_json2: gift_json[gift] = gift_json2[gift]['name'] return gift_json
4.websocket连接
python环境先安装websocket包 pip3 install websocket-client
引入websocket包后 ,使用websecket.WebSocketApp建立websecket连接客户端,创建时在 on_open 、on_error 、on_message、on_close 4个参数中传入相应事件发生时需要处理的方法
顾名思义,4个参数很好理解了
5.效果与源码
实际效果展示:
源码(演示代码 ,异常判断,数据校验就不做了):
__author__ = 'admin' import websocket import threading import time import requests import json class DyDanmu: def __init__(self, roomid, url): self.gift_dict = self.get_gift_dict() self.gift_dict_keys = self.gift_dict.keys() self.room_id = roomid self.client = websocket.WebSocketApp(url, on_open=self.on_open, on_error=self.on_error, on_message=self.on_message, on_close=self.on_close) self.heartbeat_thread = threading.Thread(target=self.heartbeat) def start(self): self.client.run_forever() def stop(self): self.logout() self.client.close() def on_open(self): self.login() self.join_group() self.heartbeat_thread.setDaemon(True) self.heartbeat_thread.start() def on_error(self, error): print(error) def on_close(self): print('close') def send_msg(self, msg): msg_bytes = self.msg_encode(msg) self.client.send(msg_bytes) def on_message(self, msg): message = self.msg_decode(msg) # print(message) for msg_str in message: msg_dict = self.msg_format(msg_str) if msg_dict['type'] == 'chatmsg': print(msg_dict['nn'] + ':' + msg_dict['txt']) if msg_dict['type'] == 'dgb': if msg_dict['gfid'] in self.gift_dict_keys: print(msg_dict['nn'] + '\t送出\t' + msg_dict['gfcnt'] + '\t个\t' + self.gift_dict[msg_dict['gfid']]) else: print(msg_dict['nn'] + '\t送出\t' + msg_dict['gfcnt'] + '\t个\t' + msg_dict['gfid'] + '\t未知礼物') # print(msg_dict) # 发送登录信息 def login(self): login_msg = 'type@=loginreq/roomid@=%s/' \ 'dfl@=sn@AA=105@ASss@AA=0@AS@Ssn@AA=106@ASss@AA=0@AS@Ssn@AA=107@ASss@AA=0@AS@Ssn@AA=108@ASss@AA=0@AS@Ssn@AA=110@ASss@AA=0@AS@Ssn@AA=901@ASss@AA=0/' \ 'username@=%s/uid@=%s/ltkid@=/biz@=/stk@=/devid@=8d8c22ce6093e6a7264f99da00021501/ct@=0/pt@=2/cvr@=0/tvr@=7/apd@=/rt@=1605498503/vk@=0afb8a90c2cb545e8459d60c760dc08b/' \ 'ver@=20190610/aver@=218101901/dmbt@=chrome/dmbv@=78/' % ( self.room_id, 'visitor4444086', '1178849206' ) self.send_msg(login_msg) def logout(self): logout_msg = 'type@=logout/' self.send_msg(logout_msg) # 发送入组消息 def join_group(self): join_group_msg = 'type@=joingroup/rid@=%s/gid@=-9999/' % (self.room_id) self.send_msg(join_group_msg) # 关闭礼物信息推送 def close_gift(self): close_gift_msg = 'type@=dmfbdreq/dfl@=sn@AA=105@ASss@AA=1@AS@Ssn@AA=106@ASss@AA=1@AS@Ssn@AA=107@ASss@AA=1@AS@Ssn@AA=108@ASss@AA=1@AS@Ssn@AA=110@ASss@AA=1@AS@Ssn@AA=901@ASss@AA=1@AS@S/' self.send_msg(close_gift_msg) # 保持心跳线程 def heartbeat(self): while True: # 45秒发送一个心跳包 self.send_msg('type@=mrkl/') print('发送心跳') time.sleep(45) def msg_encode(self, msg): # 消息以 \0 结尾,并以utf-8编码 msg = msg + '\0' msg_bytes = msg.encode('utf-8') #消息长度 + 头部长度8 length_bytes = int.to_bytes(len(msg) + 8, 4, byteorder='little') #斗鱼客户端发送消息类型 689 type = 689 type_bytes = int.to_bytes(type, 2, byteorder='little') # 加密字段与保留字段 ,默认 0 长度各 1 end_bytes = int.to_bytes(0, 1, byteorder='little') #按顺序相加 消息长度 + 消息长度 + 消息类型 + 加密字段 + 保留字段 head_bytes = length_bytes + length_bytes + type_bytes + end_bytes + end_bytes #消息头部拼接消息内容 data = head_bytes + msg_bytes return data def msg_decode(self, msg_bytes): # 定义一个游标位置 cursor = 0 msg = [] while cursor < len(msg_bytes): #根据斗鱼协议,报文 前四位与第二个四位,都是消息长度 ,取前四位,转化成整型 content_length = int.from_bytes(msg_bytes[cursor: (cursor + 4) - 1], byteorder='little') #报文长度不包含前4位,从第5位开始截取消息长度的字节流 ,并扣除前8位的协议头,取出正文,用utf-8编码成字符串 content = msg_bytes[(cursor + 4) + 8:(cursor + 4) + content_length - 1].decode(encoding='utf-8', errors='ignore') msg.append(content) cursor = (cursor + 4) + content_length # print(msg) return msg def msg_format(self, msg_str): try: msg_dict = {} msg_list = msg_str.split('/')[0:-1] for msg in msg_list: msg = msg.replace('@s', '/').replace('@A', '@') msg_tmp = msg.split('@=') msg_dict[msg_tmp[0]] = msg_tmp[1] return msg_dict except Exception as e: print(str(e)) def get_gift_dict(self): gift_json = {} gift_json1 = requests.get('https://webconf.douyucdn.cn/resource/common/gift/flash/gift_effect.json').text gift_json2 = requests.get( 'https://webconf.douyucdn.cn/resource/common/prop_gift_list/prop_gift_config.json').text gift_json1 = gift_json1.replace('DYConfigCallback(', '')[0:-2] gift_json2 = gift_json2.replace('DYConfigCallback(', '')[0:-2] gift_json1 = json.loads(gift_json1)['data']['flashConfig'] gift_json2 = json.loads(gift_json2)['data'] for gift in gift_json1: gift_json[gift] = gift_json1[gift]['name'] for gift in gift_json2: gift_json[gift] = gift_json2[gift]['name'] return gift_json if __name__ == '__main__': roomid = '74751' url = 'wss://danmuproxy.douyu.com:8506/' dy = DyDanmu(roomid, url) dy.start()
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