Http Cite

网关：

 

 

 

 

在采用不同体系结构或协议的网络之间进行互通时，用于提供协议转换、路由选择、数据交换等网络兼容功能的设施。

 

 

 

 

 

 

Some Common HTTP methods:

 

HTTP method Description

GET                Send named resource from the server to the client.

PUT                Store data from client into a named server resource.

 

DELETE         Delete the named resource from a server.

POST             Send client data into a server gateway application.

HEAD            Send just the HTTP headers from the response for the named resource.

 

 

 

Architectural components of the Web

Proxy:

    Sit between client and server, important building blocks for web security, application integration, and performance optimization.

Cache:

    A special type of HTTP proxy server that keeps copies of popular documents that pass through the proxy.

Gateway:

    Gateways are special servers that act as intermediaries for other servers. They are often used to convert HTTP traffic to another protocol.

Tunnel:

    HTTP Tunneling is a technique by which communications performed using various network protocols are encapsulated using the HTTP protocol, the network protocols in question usually belonging to the TCP/IP family of protocols. The HTTP protocol therefore acts as a wrapper for a channel that the network protocol being tunneled uses to communicate.

公司的server 可能只开了80端口，那么 其他的app要想访问server只能通过80端口，所以通过Http隧道技术就可以通信了。

Agent:

    User agents (or just agents) are client programs that make HTTP requests on the user’s behalf. 

 反向代理（Reverse Proxy）方式是指以代理服务器来接受internet上的连接请求，然后将请求转发给内部网络上的服务器，并将从服务器上得到的结果返回给internet上请求连接的客户端，此时代理服务器对外就表现为一个服务器。