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‎202405/20240505_02.md‎

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@@ -226,6 +226,7 @@ function FindProxyForURL(url, host) {
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"appstorrent.ru",
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"msn.cn",
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"wolframscience.com",
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"dropbox.com",
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"userapi.com"
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];
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‎202411/20241115_02.md‎

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Diffusion Bee is the easiest way to run Stable Diffusion locally on your M1 Mac. Comes with a one-click installer. No dependencies or technical knowledge needed.
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- https://github.com/divamgupta/diffusionbee-stable-diffusion-ui
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下载最新DiffusionBee
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- https://github.com/divamgupta/diffusionbee-stable-diffusion-ui/releases
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The Ultimate Suite of Creative AI Tools
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- https://diffusionbee.com/
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‎202411/20241116_01.md‎

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## 用tcpdump抓包了解程序到底在访问什么URL, 科学上网/翻墙场景
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### 作者
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digoal
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### 日期
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2024-11-16
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### 标签
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PostgreSQL , PolarDB , DuckDB , 科学上网
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----
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## 背景
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http代理和socks5代理可以很好的解决某些网站无法访问的问题, 但是前提是你得知道应用到底在访问什么网站? 总不能把所有流量都打到代理, 你要访问国内的网站也打到代理那不是要慢死?
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所以可以配置pac文件, 让某些地址走代理, 其他的走本地. 详见:
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- [《macOS 通过“oversea region ECS和ssh隧道转发代理请求” OR “openVPN” 提升github等访问体验 - chrome Proxy SwitchyOmega , cli ... 可用》](../202310/20231029_01.md)
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- [《iphone/macOS PC 使用nginx/httpd配置proxy.pac共享socks5 代理加速github网络访问》](../202405/20240505_02.md)
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- [《用宿主机代理(all_proxy http_proxy https_proxy)来解决docker build或docker 容器中github clone无法访问的问题》](../202403/20240327_01.md)
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## 如何知道程序访问什么网站失败了呢?
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如果是chrome浏览器就比较方便, 装个SwitchyOmega插件就可以了, 其他程序呢?
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下面给个例子, 刚好在弄使用 DiffusionBee 文生图的工具时, 需要先下载diffusion模型, 但是下载失败了, 不用说, 被墙了.
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- [《如何使用stable diffusion在Apple Silicon芯片的Mac上画图（GPU加速）- 文生图text-to-image》](../202411/20241115_02.md)
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![pic](20241116_01_pic_001.png)
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但DiffusionBee到底要访问什么URL呢? 可以用tcpdump工具抓包看看
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1、首先要知道这个程序的进程名
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![pic](20241116_01_pic_002.png)
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2、抓包
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```
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sudo tcpdump -Q "proc=DiffusionBee"
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```
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```
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Password:
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tcpdump: data link type PKTAP
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tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
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listening on pktap, link-type PKTAP (Apple DLT_PKTAP), snapshot length 524288 bytes
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09:25:33.032957 IP 5c1bf480a210.55306 > edge-z-p4-shv-01-gru2.facebook.com.https: Flags [S], seq 3573734455, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3613718148 ecr 0,sackOK,eol], length 0
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09:25:34.034117 IP 5c1bf480a210.55306 > edge-z-p4-shv-01-gru2.facebook.com.https: Flags [S], seq 3573734455, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3613719149 ecr 0,sackOK,eol], length 0
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09:25:35.034419 IP 5c1bf480a210.55306 > edge-z-p4-shv-01-gru2.facebook.com.https: Flags [S], seq 3573734455, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3613720150 ecr 0,sackOK,eol], length 0
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09:25:36.035753 IP 5c1bf480a210.55306 > edge-z-p4-shv-01-gru2.facebook.com.https: Flags [S], seq 3573734455, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3613721151 ecr 0,sackOK,eol], length 0
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09:25:37.036930 IP 5c1bf480a210.55306 > edge-z-p4-shv-01-gru2.facebook.com.https: Flags [S], seq 3573734455, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3613722152 ecr 0,sackOK,eol], length 0
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09:25:38.038126 IP 5c1bf480a210.55306 > edge-z-p4-shv-01-gru2.facebook.com.https: Flags [S], seq 3573734455, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3613723153 ecr 0,sackOK,eol], length 0
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09:25:40.038747 IP 5c1bf480a210.55306 > edge-z-p4-shv-01-gru2.facebook.com.https: Flags [S], seq 3573734455, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3613725154 ecr 0,sackOK,eol], length 0
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09:25:44.039186 IP 5c1bf480a210.55306 > edge-z-p4-shv-01-gru2.facebook.com.https: Flags [S], seq 3573734455, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3613729155 ecr 0,sackOK,eol], length 0
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09:25:52.040347 IP 5c1bf480a210.55306 > edge-z-p4-shv-01-gru2.facebook.com.https: Flags [S], seq 3573734455, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3613737156 ecr 0,sackOK,eol], length 0
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09:25:53.056284 IP 5c1bf480a210.55307 > 104.21.22.85.https: Flags [S], seq 1043501785, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3463921207 ecr 0,sackOK,eol], length 0
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09:25:53.232616 IP 5c1bf480a210.55307 > 104.21.22.85.https: Flags [.], ack 2268284160, win 2060, options [nop,nop,TS val 3463921383 ecr 3370931023], length 0
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09:25:53.233202 IP 5c1bf480a210.55307 > 104.21.22.85.https: Flags [P.], seq 0:517, ack 1, win 2060, options [nop,nop,TS val 3463921383 ecr 3370931023], length 517
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09:25:53.411151 IP 5c1bf480a210.55307 > 104.21.22.85.https: Flags [.], ack 204, win 2057, options [nop,nop,TS val 3463921562 ecr 3370931202], length 0
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09:25:53.411798 IP 5c1bf480a210.55307 > 104.21.22.85.https: Flags [P.], seq 517:705, ack 204, win 2057, options [nop,nop,TS val 3463921562 ecr 3370931202], length 188
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09:25:53.597359 IP 5c1bf480a210.55307 > 104.21.22.85.https: Flags [.], ack 1455, win 2037, options [nop,nop,TS val 3463921748 ecr 3370931388], length 0
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09:25:53.597431 IP 5c1bf480a210.55307 > 104.21.22.85.https: Flags [.], ack 1480, win 2037, options [nop,nop,TS val 3463921748 ecr 3370931388], length 0
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09:25:53.599281 IP 5c1bf480a210.55307 > 104.21.22.85.https: Flags [P.], seq 705:729, ack 1480, win 2048, options [nop,nop,TS val 3463921750 ecr 3370931388], length 24
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09:25:53.599472 IP 5c1bf480a210.55307 > 104.21.22.85.https: Flags [F.], seq 729, ack 1480, win 2048, options [nop,nop,TS val 3463921750 ecr 3370931388], length 0
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09:25:53.601604 IP 5c1bf480a210.55308 > r-199-59-148-229.twttr.com.https: Flags [S], seq 4273572242, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3593822057 ecr 0,sackOK,eol], length 0
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09:25:54.601967 IP 5c1bf480a210.55308 > r-199-59-148-229.twttr.com.https: Flags [S], seq 4273572242, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3593823057 ecr 0,sackOK,eol], length 0
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09:25:55.603155 IP 5c1bf480a210.55308 > r-199-59-148-229.twttr.com.https: Flags [S], seq 4273572242, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3593824059 ecr 0,sackOK,eol], length 0
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09:25:56.604516 IP 5c1bf480a210.55308 > r-199-59-148-229.twttr.com.https: Flags [S], seq 4273572242, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3593825060 ecr 0,sackOK,eol], length 0
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09:25:57.605715 IP 5c1bf480a210.55308 > r-199-59-148-229.twttr.com.https: Flags [S], seq 4273572242, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3593826061 ecr 0,sackOK,eol], length 0
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09:25:58.606917 IP 5c1bf480a210.55308 > r-199-59-148-229.twttr.com.https: Flags [S], seq 4273572242, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3593827062 ecr 0,sackOK,eol], length 0
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09:26:00.607693 IP 5c1bf480a210.55308 > r-199-59-148-229.twttr.com.https: Flags [S], seq 4273572242, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3593829063 ecr 0,sackOK,eol], length 0
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09:26:04.608511 IP 5c1bf480a210.55308 > r-199-59-148-229.twttr.com.https: Flags [S], seq 4273572242, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3593833064 ecr 0,sackOK,eol], length 0
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09:26:12.609854 IP 5c1bf480a210.55308 > r-199-59-148-229.twttr.com.https: Flags [S], seq 4273572242, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 3593841065 ecr 0,sackOK,eol], length 0
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```
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更多用法请参考tcpdump 帮助文档.
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最后还是失败了, 把proxy全放开, 也没能下载成功, 可能对方根据来源IP进行了限制吧.
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## 参考
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[《iphone/macOS PC 使用nginx/httpd配置proxy.pac共享socks5 代理加速github网络访问》](../202405/20240505_02.md)
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[《macOS 通过“oversea region ECS和ssh隧道转发代理请求” OR “openVPN” 提升github等访问体验 - chrome Proxy SwitchyOmega , cli ... 可用》](../202310/20231029_01.md)
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[《用宿主机代理(all_proxy http_proxy https_proxy)来解决docker build或docker 容器中github clone无法访问的问题》](../202403/20240327_01.md)
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ip地址详情
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- https://ipinfo.io/
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Recording a Packet Trace
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- https://developer.apple.com/documentation/network/recording-a-packet-trace
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macOS 下使用 tcpdump 抓包
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- https://www.jianshu.com/p/a57a5b0e58f0
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tcpdump 详细使用指南（请尽情食用）
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- https://blog.csdn.net/qq_24433609/article/details/126729595
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diffusionbee
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- https://github.com/divamgupta/diffusionbee-stable-diffusion-ui/releases
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- https://github.com/divamgupta/diffusionbee-stable-diffusion-ui
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wireshark 抓包工具
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- https://www.wireshark.org/
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sniffnet 网络监控工具
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- https://sniffnet.net/download/
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#### [期望 PostgreSQL|开源PolarDB 增加什么功能?](https://github.com/digoal/blog/issues/76 "269ac3d1c492e938c0191101c7238216")
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#### [PolarDB 开源数据库](https://openpolardb.com/home "57258f76c37864c6e6d23383d05714ea")
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#### [PolarDB 学习图谱](https://www.aliyun.com/database/openpolardb/activity "8642f60e04ed0c814bf9cb9677976bd4")
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#### [PostgreSQL 解决方案集合](../201706/20170601_02.md "40cff096e9ed7122c512b35d8561d9c8")
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#### [德哥 / digoal's Github - 公益是一辈子的事.](https://github.com/digoal/blog/blob/master/README.md "22709685feb7cab07d30f30387f0a9ae")
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#### [About 德哥](https://github.com/digoal/blog/blob/master/me/readme.md "a37735981e7704886ffd590565582dd0")
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![digoal's wechat](../pic/digoal_weixin.jpg "f7ad92eeba24523fd47a6e1a0e691b59")
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‎202411/20241116_01_pic_001.png‎

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‎202411/20241116_01_pic_002.png‎

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‎202411/readme.md‎

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### 文章列表
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----
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##### 20241116_01.md [《用tcpdump抓包了解程序到底在访问什么URL, 科学上网/翻墙场景》](20241116_01.md)
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##### 20241115_03.md [《PostgreSQL SaaS业务DBaaS设计 - schema与database的优劣 - schema如何解决隔离问题?》](20241115_03.md)
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##### 20241115_02.md [《如何使用stable diffusion在Apple Silicon芯片的Mac上画图（GPU加速）- 文生图text-to-image》](20241115_02.md)
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##### 20241115_01.md [《qwen2.5-coder真牛~~用它打PolarDB国赛劲劲的》](20241115_01.md)

‎README.md‎

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### 六、所有文档如下
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----
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##### 202411/20241116_01.md [《用tcpdump抓包了解程序到底在访问什么URL, 科学上网/翻墙场景》](202411/20241116_01.md)
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##### 202411/20241115_03.md [《PostgreSQL SaaS业务DBaaS设计 - schema与database的优劣 - schema如何解决隔离问题?》](202411/20241115_03.md)
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##### 202411/20241115_02.md [《如何使用stable diffusion在Apple Silicon芯片的Mac上画图（GPU加速）- 文生图text-to-image》](202411/20241115_02.md)
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##### 202411/20241115_01.md [《qwen2.5-coder真牛~~用它打PolarDB国赛劲劲的》](202411/20241115_01.md)

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