通过代理服务器【1】访问受限资源【2】的Smalltalk【3】网络代理【4】案例
在网络世界中，受限资源的存在使得用户在访问某些特定内容时受到限制。为了绕过这些限制，网络代理服务器应运而生。代理服务器作为中介，可以帮助用户匿名访问【5】受限资源。本文将使用Smalltalk语言，通过构建一个简单的网络代理模型，展示如何通过代理服务器访问受限资源。
Smalltalk简介
Smalltalk是一种面向对象的编程语言，由Alan Kay等人于1970年代初期设计。它以其简洁、易学、易用而著称。Smalltalk语言具有强大的元编程【6】能力，能够方便地创建网络代理等应用。
网络代理原理
网络代理服务器的工作原理如下：
1. 用户请求访问受限资源。
2. 请求首先发送到代理服务器。
3. 代理服务器将请求转发【7】到目标服务器【8】。
4. 目标服务器响应请求，并将响应返回【9】给代理服务器。
5. 代理服务器将响应转发给用户。
Smalltalk网络代理案例
以下是一个使用Smalltalk语言实现的简单网络代理案例：
```smalltalk
| proxyServer |
Class category: 'Network【10】' instanceVariableNames: 'socket【11】' methods: 'start stop connectToServer sendRequest【12】 receiveResponse【13】' end
Class category: 'Network' instanceVariableNames: 'host port' methods: 'initialize【14】' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize connectToServer sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods: 'initialize sendRequest receiveResponse' end
Class category: 'Network' instanceVariableNames: 'socket' methods
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