mirror of
https://github.com/lunarmodules/luasocket.git
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87 lines
3.1 KiB
Plaintext
87 lines
3.1 KiB
Plaintext
What's New
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Everything is new! Many changes for 2.0 happened in the C layer,
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which has been almost completely rewritten. The code has been ported to
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Lua 5.0 and greatly improved. There have also been some API changes
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that made the interface simpler and more consistent. Here are some of
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the changes that made it into version 2.0:
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<> Major C code rewrite. Code is modular and extensible. Hopefully, other
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developers will be motivated to provide code for SSL, local domain
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sockets, file descriptors, pipes (on Unix) and named pipes etc;
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<> Everything that is exported by the library is exported inside
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namespaces. These should be obtained with calls to the
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'require' function;
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<> Functions such as
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send/receive/timeout/close etc do not exist anymore as stand-alone
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functions. They are now only available as methods of the appropriate
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objects;
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<> All functions return a non-nil value as first return value if successful.
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All functions return 'nil' followed by error message
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in case of error. This made the library much easier to use;
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<> Greatly reduced the number of times the C select is called
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during data transfers, by calling only on failure. This might
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improve a lot the maximum throughput;
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<> TCP has been changed to become more uniform. It's possible to first
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create a TCP object,
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then connect or bind if needed, and finally use I/O functions.
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'socket.connect' and 'socket.bind' functions are still
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provided for simplicity;
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<> This allows for setting a timeout value before connecting;
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<> And also allows binding to a local address before connecting;
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<> New 'socket.dns.gethostname' function and 'shutdown'
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method;
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<> Better error messages and parameter checking;
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<> Should be interrupt safe;
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<> UDP connected sockets can break association with peer by calling
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'setpeername' with address ''*'';
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<> Sets returned by 'socket.select' are associative;
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<> Select checks if sockets have buffered data and returns immediately;
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<> 'socket.sleep' and 'socket.time' are now part of the
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library and are supported. They used to be available only when
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LUASOCKET_DEBUG was defined, but it turns out they might be useful for
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applications;
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<> 'socket.try' and 'socket.protect' provide a simple
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interface to exceptions that proved very in the implementation of
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high-level modules;
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<> Socket options interface has been improved. TCP objects also
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support socket options and many new options were added.
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Lots of changes in the Lua modules, too!
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<> Every module loads only the modules that it needs. There is no waste
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of memory. LuaSocket core takes only 20k of memory;
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<> New MIME and LTN12 modules make all other modules much more powerful;
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<> Support for multipart messages in the SMTP module;
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<> The old callback mechanism of FTP and HTTP has been replaced with LTN12
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sources and sinks, with advantage;
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<> Common implementation for low-level FTP and SMTP;
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<> FTP, HTTP, and SMTP are implemented in multiple levels in such a way
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that users will have no problems extending the functionality to satisfy
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personal needs;
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<> SMTP knows how to perform LOGIN and PLAIN authentication.
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