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1What's New 1What's New
2 2
3Everything is new! Many changes for 2.0 happened in the C layer, 3Changes in the 2.0-beta2 were mostly bug-fixes.
4which has been almost completely rewritten. The code has been ported to 4
5Lua 5.0 and greatly improved. There have also been some API changes 5<> Fixed silly last-minute-change bug in HTTP/SMTP running;
6that made the interface simpler and more consistent. Here are some of 6<> usocket.c/wsocket.c look nicer thanks to Mike;
7the changes that made it into version 2.0: 7<> Finally total timeout is reliable on Windows! (found a pretty
8 8 simple work around);
9<> Major C code rewrite. Code is modular and extensible. Hopefully, other 9<> UDP has a reasonable maximum datagram size (8k);
10 developers will be motivated to provide code for SSL, local domain 10<> Receive accepts the prefix optional argument (good for
11 sockets, file descriptors, pipes (on Unix) and named pipes etc; 11 non-blocking);
12 12<> <b>Send doesn't support multiple arguments anymore</b>;
13<> Everything that is exported by the library is exported inside 13<> Instead, send allows the selection of the substring
14 namespaces. These should be obtained with calls to the 14 to be sent (good for non-blocking);
15 'require' function; 15<> Fixed bug that caused select return tables not to be associative
16 16 on windows;
17<> Functions such as 17<> Should compiles with g++;
18 send/receive/timeout/close etc do not exist anymore as stand-alone 18<> New sample unix domain support;
19 functions. They are now only available as methods of the appropriate 19<> New sample LPD support;
20 objects; 20<> Comprehensive error messages;
21 21<> New getstats and setstats methods to help
22<> All functions return a non-nil value as first return value if successful. 22 throttling;
23 All functions return 'nil' followed by error message 23<> Listen defaults to 32 backlog;
24 in case of error. This made the library much easier to use; 24<> SMTP/FTP/HTTP fail gracefully;
25 25<> accept/connect/select interrupt safe
26<> Greatly reduced the number of times the C select is called 26<> Fixed bug that didn't set accepted sockets as non-blocking
27 during data transfers, by calling only on failure. This might 27<> <b>New timming functions sleep and gettime have
28 improve a lot the maximum throughput; 28 higher resolution and no wrap around problems</b>;
29 29<> Bug fixes in the manual;
30<> TCP has been changed to become more uniform. It's possible to first 30<> Fixed bug of missing cast in getfd.
31 create a TCP object,
32 then connect or bind if needed, and finally use I/O functions.
33 'socket.connect' and 'socket.bind' functions are still
34 provided for simplicity;
35
36<> This allows for setting a timeout value before connecting;
37
38<> And also allows binding to a local address before connecting;
39
40<> New 'socket.dns.gethostname' function and 'shutdown'
41 method;
42
43<> Better error messages and parameter checking;
44
45<> Should be interrupt safe;
46
47<> UDP connected sockets can break association with peer by calling
48 'setpeername' with address ''*'';
49
50<> Sets returned by 'socket.select' are associative;
51
52<> Select checks if sockets have buffered data and returns immediately;
53
54<> 'socket.sleep' and 'socket.time' are now part of the
55 library and are supported. They used to be available only when
56 LUASOCKET_DEBUG was defined, but it turns out they might be useful for
57 applications;
58
59<> 'socket.newtry' and 'socket.protect' provide a simple
60 interface to exceptions that proved very in the implementation of
61 high-level modules;
62
63<> Socket options interface has been improved. TCP objects also
64 support socket options and many new options were added.
65
66
67Lots of changes in the Lua modules, too!
68
69<> Every module loads only the modules that it needs. There is no waste
70 of memory. LuaSocket core takes only 20k of memory;
71
72<> New MIME and LTN12 modules make all other modules much more powerful;
73
74<> Support for multipart messages in the SMTP module;
75
76<> The old callback mechanism of FTP and HTTP has been replaced with LTN12
77 sources and sinks, with advantage;
78
79<> Common implementation for low-level FTP and SMTP;
80
81<> FTP, HTTP, and SMTP are implemented in multiple levels in such a way
82 that users will have no problems extending the functionality to satisfy
83 personal needs;
84
85<> SMTP knows how to perform LOGIN and PLAIN authentication.
86 31