Gate.io U本位永续合约深度频道升级指南:全新futures.obu频道详解
为了给交易者提供更优的市场数据体验,Gate.io即将为U本位永续合约推出一个全新的深度频道:futures.obu。这次升级不仅优化了数据推送逻辑,还扩展了深度档位,旨在为高频交易者和量化开发者带来更精细、更及时的市场深度信息。下面,我们就来详细拆解这个新频道的具体规则和使用方法。
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1. 频道详情
全新的深度频道核心信息如下:
- 频道名称: futures.obu
- 参数格式: ob.{symbol}.{level}
举个例子,如果你想订阅BTC/USDT交易对的深度数据,可以这样设置:
ob.BTC_USDT.400 —— 这代表订阅400档深度。
ob.BTC_USDT.50 —— 这代表订阅50档深度。 - 档位与更新频率:
400档:每100毫秒更新一次。
50档:每20毫秒更新一次,为对延迟更敏感的策略提供了更高频的数据。
2. 订阅与推送规则
理解数据推送的两种模式,是正确对接的关键。
全量深度推送(full=true):当收到这种推送时,意味着你需要用这次收到的完整深度数据,完全替换掉本地的深度数据,同时将本地深度ID更新为消息中的字段
u。请注意,服务端可能会重复推送全量深度。- 当你首次订阅某个频道时,收到的第一条数据就是全量深度,这是建立初始数据快照的基础。
增量深度推送(full=false):增量消息中不会显示“full”字段,取而代之的是两个关键ID字段:“U”(深度起始ID)和“u”(深度结束ID)。处理逻辑分为两种情况:
- 情况一:连续更新。如果收到的
U等于你本地保存的深度ID加1(即U = 本地深度ID + 1),那么恭喜,数据是连续的。此时,你需要:
1. 将本地深度ID更新为消息中的u。
2. 根据消息中“a”(卖盘)和“b”(买盘)数组的内容,更新对应的档位。每个更新项是一个数组,level[0]是价格,level[1]是数量。特别要注意:当某个档位的数量level[1]为“0”时,意味着这个价格档位的订单已被全部成交或撤销,需要从本地深度中移除该档位。 - 情况二:数据不连续。如果
U ≠ 本地深度ID + 1,说明深度数据出现了断层。这时,最稳妥的做法是取消当前对该市场深度的订阅,然后重新订阅,以获取一份全新的、完整的初始化深度数据。
- 情况一:连续更新。如果收到的
订阅限制:这是一个需要特别注意的规则。对于同一个合约的同一个深度流,在一个WebSocket连接中只允许订阅一次。如果尝试重复订阅,系统会返回错误。例如,重复订阅ob.BTC_USDT.50可能会收到如下报错:
{ "error": { "code": 2, "message": "Alert sub ob.BTC_USDT.50" } }
3. 操作与数据推送示例
理论说完了,我们来看点实际的代码和数据结构,这能帮你更快地上手。
- 3.1 订阅
订阅请求示例(Python):
from websocket import create_connection
import json
ws = create_connection("wss://ws-testnet.gatenode.ch/v4/ws/futures/usdt")
subscribe_msg = {"time": 1747054611, "channel": "futures.obu", "event": "subscribe", "payload": ["ob.BTC_USDT.50"]}
ws.send(json.dumps(subscribe_msg))
print(ws.recv())
订阅成功响应示例:
{"time":1747054611,"time_ms":1747054611614,"conn_id":"d7de96c024f2a5b2","trace_id":"e6fd9bdd617fcdb80d0762ffa33e71f6","channel":"futures.obu","event":"subscribe","payload":["ob.BTC_USDT.50"],"result":{"status":"success"}}
全量推送示例:
{"channel":"futures.obu","result":{"t":1747054612673,"full":true,"s":"ob.BTC_USDT.50","u":73777715168,"b":[["104027.1","509392"],["104027","477932"],["104026.9","495268"],["104026.7","32736"],["104026.5","34203"],["104026.3","41574"],["104026.1","38304"],["104025.9","32032"],["104025.7","37002"],["104025.5","34533"],["104025.3","33314"],["104025.1","35940"],["104024.9","45910"],["104024.7","35976"],["104024.5","43786"],["104024.3","48071"],["104016.7","41323"],["104006.3","43951"],["103995.9","33242"],["103985.5","41970"],["103975.1","42491"],["103964.7","37901"],["103954.3","39813"],["103943.9","36248"],["103933.5","39625"],["103923.1","39711"],["103912.7","33346"],["103902.3","31525"],["103891.9","34768"],["103881.5","43964"],["103871.1","43706"],["102897.6","1"],["11000","44782"]],"a":[["104027.2","44617"],["104027.4","39322"],["104027.6","41485"],["104027.8","31237"],["104028","31186"],["104028.2","46392"],["104028.4","35450"],["104028.6","36521"],["104028.8","32805"],["104029","41248"],["104029.2","39116"],["104029.4","40685"],["104029.6","37907"],["104029.8","40635"],["104030","38132"],["104037.6","29238"],["104048","38673"],["104058.4","39043"],["104068.8","45300"],["104079.2","45954"],["104089.6","39731"],["104100","44410"],["104110.4","37043"],["104120.8","31646"],["104131.2","32643"],["104141.6","40837"],["104152","42588"],["104162.4","45369"],["104172.8","30834"],["104183.2","41898"],["108000","699"],["100000000","10"]]},"time_ms":1747054612848}
增量推送示例:
{"channel":"futures.obu","result":{"t":1747054612695,"s":"ob.BTC_USDT.50","U":73777715169,"u":73777715212,"b":[["104024.5","10343"],["104014.5","509392"],["104014.3","477932"],["104012.6","33314"],["104012.5","15215"],["104011.6","48071"],["104027.1","0"],["104027","0"],["104026.9","0"],["104026.7","0"],["104026.5","0"],["104026.3","0"],["104026.1","0"],["104025.9","0"],["104025.7","0"],["104025.5","0"],["104025.3","0"],["104025.1","0"],["104024.9","0"],["104024.7","0"],["104024.3","0"]],"a":[["104027.2","0"],["104027.4","0"],["104027.6","0"],["104027.8","0"],["104028.2","0"],["104028.4","0"],["104028.6","0"],["104028.8","0"],["104029.2","0"],["104029.6","0"],["104029.8","0"],["104030","0"]]},"time_ms":1747054612925}
- 3.2 取消订阅
取消订阅请求示例(Python):
from websocket import create_connection
import json
ws = create_connection("wss://ws-testnet.gatenode.ch/v4/ws/futures/usdt")
unsubscribe_msg = {"time": 123456, "channel": "futures.obu", "event": "unsubscribe", "payload": ["ob.BTC_USDT.50"]}
ws.send(json.dumps(unsubscribe_msg))
print(ws.recv())
取消订阅响应示例:
{"time":1743673617,"time_ms":1743673617242,"id":1,"conn_id":"7b06ff199a98ab0e","trace_id":"8f86e4021a84440e502f73fde5b94918","channel":"futures.obu","event":"unsubscribe","payload":["ob.BTC_USDT.50"],"result":{"status":"success"}}
4. 模拟盘测试通知
目前,这项新功能已经在永续合约的模拟环境中上线。开发者可以立即通过以下地址进行接入测试,提前验证你的对接逻辑:
WebSocket U本位永续合约模拟交易地址:
wss://ws-testnet.gatenode.ch/v4/ws/futures/usdt
请各位开发者根据上述新规则,及时调整你们的系统对接逻辑。如果在测试或对接过程中遇到任何问题,欢迎随时联系我们的客户支持团队获取帮助。
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