Statement expression is GNU C extension, not present in ISO standard.
Type checking works now via implicit conversion performed for compound
literal (compound literals are available since C99). typeof is only used
on GNUC compilers like gcc or clang.
This commit implements two more features:
* min_accept_backoff configuration option
* retry accept() after some close() calls
See also https://github.com/darkk/redsocks/issues/19
Libevent 2 deprecates evbuffer_readline() function, where any sequence
of any number of carriage return and linefeed characters is treated like
end of line, and introduces better evbuffer_readln(), where termination
format can be explicitly set to: \n, [\r]\n, \r\n or already mentioned
old behaviour.
Change past evbuffer_readline() calls to new
redsocks_evbuffer_readline() function. If libevent 2 is present, use
there evbuffer_readln() with eol_style set to an optional carriage
return, followed by a linefeed (EVBUFFER_EOL_CRLF) instead of obsolete
evbuffer_readln().
Important note:
Consuming all CR and LF characters in one go (behaviour of
evbuffer_readline(), nowadays aliasing to evbuffer_readln() with
eol_style set to EVBUFFER_EOL_ANY) hangs up parsing of HTTP request
header ending with "\r\n\r\n", because it misses the empty line.
Conflicts (resolved):
utils.c
utils.h
redsocks.c: In function 'redsocks_read_expected':
redsocks.c:407: warning: unused variable 'read'
http-relay.c: In function 'httpr_client_read_cb':
http-relay.c:520: warning: unused variable 'written_wo_null'
These variables are used in asserts and if asserts are not compiled,
e.g. by defining NDEBUG (usually in CFLAGS via -DNDEBUG), then we have
misleading warnings.
Add in utils.h UNUSED() macro for creating null statement with result
casted to void. Use it to fix above warnings.
