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feng92f avatar feng92f commented on September 23, 2024

@eycorsican 今天在 openwrt (透明代理)测试PS4还是类型3, 测试 PC 是Full Cone。透明代理已经满意了,就是一直搞不定PS4。

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feng92f avatar feng92f commented on September 23, 2024

@eycorsican 排除了mellow的问题,有可能是PS的测试包太大了,服务端或机房的问题

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feng92f avatar feng92f commented on September 23, 2024

发送了个1522Bytes的UDP有1600的返回:
unknown process | udp | 39s | 192.168.2.150:9308 | 52.40.62.122:3478 | 1,552 | 1,600 |   | udp_out
发送22528的没有返回(我猜这个0是超时了吧)
unknown process | udp | 32s | 192.168.2.150:62484 | 52.40.62.122:3478 | 22,528 | 0 | | udp_out
这是PS的测试

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feng92f avatar feng92f commented on September 23, 2024

服务端的日志是PS测试NAT类型的时候会先发10个小的UDP,都可以成功。然后再发10个大的UDP,ss或者socks都能发出去,但是没有回复。

2019/11/09 05:20:59 [Info] [1998981765] v2ray.com/core/proxy/freedom: opening connection to udp:52.40.62.42:3478
2019/11/09 05:21:00 [Debug] [1998981765] v2ray.com/core/proxy/socks: send packet to udp:52.40.62.42:3478 with 2038 bytes
2019/11/09 05:21:00 [Debug] [1998981765] v2ray.com/core/transport/internet/udp: dispatch request to: udp:52.40.62.42:3478
2019/11/09 05:21:00 [Debug] [1998981765] v2ray.com/core/proxy/socks: send packet to udp:52.40.62.42:3478 with 2038 bytes
2019/11/09 05:21:00 [Debug] [1998981765] v2ray.com/core/transport/internet/udp: dispatch request to: udp:52.40.62.42:3478
2019/11/09 05:21:02 [Debug] [1998981765] v2ray.com/core/proxy/socks: send packet to udp:52.40.62.42:3478 with 2038 bytes
2019/11/09 05:21:02 [Debug] [1998981765] v2ray.com/core/transport/internet/udp: dispatch request to: udp:52.40.62.42:3478
2019/11/09 05:21:03 [Info] [4102669601] v2ray.com/core/app/proxyman/outbound: failed to process outbound traffic > v2ray.com/core/proxy/freedom: connection ends > context canceled
2019/11/09 05:21:03 [Info] [4102669601] v2ray.com/core/transport/internet/udp: failed to handle UDP input > io: read/write on closed pipe
2019/11/09 05:21:03 [Info] [1998981765] v2ray.com/core/app/proxyman/outbound: failed to process outbound traffic > v2ray.com/core/proxy/freedom: connection ends > context canceled
2019/11/09 05:21:03 [Info] [1998981765] v2ray.com/core/transport/internet/udp: failed to handle UDP input > io: read/write on closed pipe

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eycorsican avatar eycorsican commented on September 23, 2024

你服务端用 v2ray-core ?

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feng92f avatar feng92f commented on September 23, 2024

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eycorsican avatar eycorsican commented on September 23, 2024

说起这个包大小,v2ray 在这方面好像是有些问题的,我后面修一下再发个包,你有空测试下一不?需要 macOS 还是 Linux?

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feng92f avatar feng92f commented on September 23, 2024

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eycorsican avatar eycorsican commented on September 23, 2024

发现改起来很麻烦还是算了。

总的来说,通过 v2ray-core (或者 Mellow)的 UDP 包不能超过 2048 字节,超过部分数据会丢失,从上面的日志来看,代理的数据是 2038 字节,如果算上 SOCKS5 协议头 10 字节,刚好传了 2048 字节。

UDP 包一般不会超过 1500 字节所以问题不大,你实际使用中,比如玩游戏时,会因为这个问题玩不了吗?

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feng92f avatar feng92f commented on September 23, 2024

那就是PS4发出的是更大的包,发出前被截取了,导致过不了NAT服务器的校验。感觉是不好修啊。Apex 进不去。

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feng92f avatar feng92f commented on September 23, 2024

还有一些游戏也是哗哗的UDP超时

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feng92f avatar feng92f commented on September 23, 2024

哪有什么推荐的办法处理这些UDP流量呢

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eycorsican avatar eycorsican commented on September 23, 2024

@feng92f 试下这个:https://github.com/mellow-io/mellow/releases/download/v0.1.8/core-linux-amd64-fix-udp

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feng92f avatar feng92f commented on September 23, 2024

@eycorsican 我测试了好几次,结果不同。有时候是类型二,有时候是类型三。类型三会影响游戏。
我把非53的UDP走ss-redir,让ss的路由直接从网关出去的话,每次都是类型2,服务端没问题。

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eycorsican avatar eycorsican commented on September 23, 2024

你的意思是流量先经过 Mellow 再到 ss-redir ?还是完全不经 Mellow ?

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feng92f avatar feng92f commented on September 23, 2024

备选方案不经过 mellow ,我在session里看不到目的地为ss或者真实服务器的流量记录。

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feng92f avatar feng92f commented on September 23, 2024

之前PS会提示你的路由器不支持IP Fragments,现在看不到了

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feng92f avatar feng92f commented on September 23, 2024

啊不是备选,这个方案太麻烦了,还是完美支持最好啦

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eycorsican avatar eycorsican commented on September 23, 2024

能给日志和用 tcpdump 抓下包最好

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feng92f avatar feng92f commented on September 23, 2024

好的

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eycorsican avatar eycorsican commented on September 23, 2024

@feng92f

再测下这个:https://github.com/mellow-io/mellow/releases/download/v0.1.8/core-linux-amd64-fix-mtu

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feng92f avatar feng92f commented on September 23, 2024

@eycorsican 这个类型3我估计还包含了丢包率信息 这是Apex的连接数据(mellow)
WechatIMG18
用ss-redir测试几乎都是0丢包

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eycorsican avatar eycorsican commented on September 23, 2024

再用这个抓下包:https://github.com/mellow-io/mellow/releases/download/v0.1.8/core-linux-amd64-ttl-tos

抓包时不要只过滤 udp,抓所有的数据,并用 -w 写到 pcap 文件里,比如这样:

tcpdump -i tun1 -w out.pcap

分别抓以下场景:

  • 用 mellow 测出类型二
  • 用 mellow 测出类型三
  • 用 ss-redir 测出类型二

每次抓包只包含一次测试,从开始测试到结果显示出来为止,如果出现超时或者类型不符合的话要重测的话,抓包程序也要重启,不要把多次测试混在里面。

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feng92f avatar feng92f commented on September 23, 2024

可能是由于昨天重启路由的时候,mellow 启动前 sleep 时间太长了,所以走的是直连。

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eycorsican avatar eycorsican commented on September 23, 2024

@feng92f https://github.com/mellow-io/mellow/releases/download/v0.1.8/core-linux-amd64-fix-nat

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feng92f avatar feng92f commented on September 23, 2024

@eycorsican 成就达成。稳定类型2,但是丢包(测试提示不支持Fragment,游戏丢包5%,进不去),应该是大包的问题。

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eycorsican avatar eycorsican commented on September 23, 2024

不应该有 fragment 问题啊,会不会是网络波动问题

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feng92f avatar feng92f commented on September 23, 2024

@eycorsican "测试提示不支持Fragment" 是误报,抱歉,是我的MTU改成1400测试的,改为1500就好了。丢包还存在,我再确认一下。

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feng92f avatar feng92f commented on September 23, 2024

会不会是有的包不被core识别为UDP,然后走了vmess?我好几个出口

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eycorsican avatar eycorsican commented on September 23, 2024

把配置改为全局代理到 ss-libev 服务器测下

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feng92f avatar feng92f commented on September 23, 2024

@eycorsican 稍等一下 我得换个服务器

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feng92f avatar feng92f commented on September 23, 2024

@eycorsican 全局后仍然有2%的丢包率(多个机房),进入游戏要多次重试,可以进入。使用ss-redir可以0%丢包。让ss-redir处理非tcp流量后走mellow可以0丢包(游戏-ss-mellow-libev)。

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eycorsican avatar eycorsican commented on September 23, 2024

流量是怎样从 ss-redir 给到 mellow 的?整个配置是怎样的?多个机房是指多个游戏区域服务器还是不同机房的 ss-libev?

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feng92f avatar feng92f commented on September 23, 2024

多个机房是:多个ss-libev测试多个游戏的机房都丢包。最后一个版本的session页面故障了,所以我不是很确定,通过iptables把udp标记,通过tproxy转给ssredir,然后ssredir走core出去。。。。如果我给ss加入静态路由直接到eth1,这个就不走core。

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eycorsican avatar eycorsican commented on September 23, 2024

ss-redir 走 core (mellow) 的 freedom 出去?sessions 页面有啥故障了?

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feng92f avatar feng92f commented on September 23, 2024

@eycorsican 不好意思哈,昨天那个session页面打开的确表格只有表头, 里面没数据,我没能确认。
刚才重试了,没能重现,昨天应该是幻觉。通过ss转给mellow,仍然有2%的丢包。
Snip20191113_2
这个就是ss走了mellow,挺滑稽,从udp-out出去的。这个红色的是sslibev。

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feng92f avatar feng92f commented on September 23, 2024

udp_out 就是 sslibev

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eycorsican avatar eycorsican commented on September 23, 2024

我还是没看懂,大概是因为我没用过 ss-redir 吧,你直接把 ss-redir 和 mellow 的配置发一下。

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feng92f avatar feng92f commented on September 23, 2024

@eycorsican 我刚找机器测试了PUBG,ss-redir和mellow做到同样的效果,反复确认延迟和丢包率一样都是100ms和0%丢包。100ms主要是因为机房远。

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feng92f avatar feng92f commented on September 23, 2024

加 ip route add xxxxx via 192.168.1.1 table main 就绕过mellow,不加就走mellow,mellow配置没什么变化,基本就是你的推荐配置

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feng92f avatar feng92f commented on September 23, 2024

这Apex丢包是很严重的,2%是启动游戏前的测试,进入后丢包是上升的,应该和具体游戏的通讯方式有关了,Apex是不能玩的。PUBG没问题。

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eycorsican avatar eycorsican commented on September 23, 2024

没什么头绪,感觉像是配置不当引起的问题,比如 DNS 解析返回了一个不合适的 IP。

现在 NAT 问题解决了,丢包问题另外开个 issue 讨论吧。

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feng92f avatar feng92f commented on September 23, 2024

好的 #80 #80

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