High-performance network communication framework HP-Socket v5.7.3

• Project homepage:  http://www.oschina.net/p/hp-socket
• Development documentation: https://www.docin.com/p-2287339564.html
• Download link: https://github.com/ldcsaa/HP-Socket
• QQ Group: 44636872, 75375912

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This update adds UDP Node components and adds a lot of APIs!

v5.7.3 update

1. New component: UDP Node

1. UDP Node has no concept of "connection" and can send and receive data to and from any address
2. UDP Node supports three operating modes: unicast, multicast and broadcast
3. Add UDP Node component example Demo'TestUDPNode'
4. UDP Node workflow
   

2. API update

1. All components add Wait() method to wait for the component to close
2. All communication components add SetReuseAddressPolicy() method to support setting address reuse strategy
3. All SSL communication components add SetSSLCipherList() method to support setting SSL cipher suite
4. Add Brotli compression/decompression support, (provide _BROTLI_DISABLED precompiled macro to close Brotli library function)
5. OpenSSL upgraded to version 1.1.1h

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HP-Socket component list

1. Basic components
   
2. SSL components
   
3. HTTP component
   

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