nginx, flask, wsgi

原来自己还没搞懂这些。

首先post一个观点：

nginx应该是没解析任何东西，就判断是不是http请求，然后转发？或者判断是不是tcp请求，然后转发。

所以给了python后台就可以用wsgi解包。

浏览器发送一个HTTP请求；

服务器收到请求，生成一个HTML文档；

服务器把HTML文档作为HTTP响应的Body发送给浏览器；

浏览器收到HTTP响应，从HTTP Body取出HTML文档并显示。

flask默认实现了多线程啊。

在api里面print("??")， time.sleep(5)就知道了，先输出两个？？

那

threaded=True,
processes=5,

这两个参数是干嘛的。

对，默认多线程，threaded=False,就可以开启不是多线程

GET

浏览器直接访问：

GET / HTTP/1.1
Host: localhost:8888
Connection: keep-alive
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8
Cookie: session=eyJ1c2VyX2lkIjoxMX0.XFBI2g.Y6DEEvE55BrKN1RAi3ahzr2ACLY

curl:

('127.0.0.1', 37574)上线
GET / HTTP/1.1
Host: localhost:8888
User-Agent: curl/7.47.0
Accept: */*

 nginx:

GET / HTTP/1.0
Host: localhost:8080
X-Real-IP: 192.18.0.1
X-Forwarded-For: 192.18.0.1
Connection: close
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8
Cookie: session=eyJ1c2VyX2lkIjoxMX0.XFBI2g.Y6DEEvE55BrKN1RAi3ahzr2ACLY
If-None-Match: W/"5c334609-97a"
If-Modified-Since: Mon, 07 Jan 2019 12:28:57 GMT

 post man

GET / HTTP/1.1
Host: localhost:8888
Connection: keep-alive
Cache-Control: no-cache
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
Postman-Token: 30cd6141-94c1-72f4-867b-6812798e630d
Accept: */*
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8

curl post

('192.18.0.1', 37324)上线
POST / HTTP/1.1
Host: localhost:8888
User-Agent: curl/7.47.0
Accept: */*
Content-Length: 144
Expect: 100-continue
Content-Type: multipart/form-data; boundary=------------------------a2d7d2c79637d3d8


--------------------------a2d7d2c79637d3d8
Content-Disposition: form-data; name="weiming"

aa
--------------------------a2d7d2c79637d3d8--

postman post

('192.18.0.1', 37878)上线
POST / HTTP/1.1
Host: localhost:8888
Connection: keep-alive
Content-Length: 141
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36                                                  
Cache-Control: no-cache
Origin: chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop
Postman-Token: 70ba296b-ceaa-10be-0fa0-99f50f7b92c3
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryxQsGCT1GJEFAARPd
Accept: */*
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8

------WebKitFormBoundaryxQsGCT1GJEFAARPd
Content-Disposition: form-data; name="weiming"

liu
------WebKitFormBoundaryxQsGCT1GJEFAARPd--

postman post nginx

('192.18.0.6', 34046)上线
POST / HTTP/1.0
Host: localhost:8080
X-Real-IP: 192.18.0.1
X-Forwarded-For: 192.18.0.1
Connection: close
Content-Length: 234
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
Cache-Control: no-cache
Origin: chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop
Postman-Token: 63158aa1-955c-b6bf-0a25-3ddcf7db86df
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryNM8OhUBY87wBspdZ
Accept: */*
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8

------WebKitFormBoundaryNM8OhUBY87wBspdZ
Content-Disposition: form-data; name="weiming"

liu
------WebKitFormBoundaryNM8OhUBY87wBspdZ
Content-Disposition: form-data; name="aaa"

bbb
------WebKitFormBoundaryNM8OhUBY87wBspdZ--