Misc sendto/recvfrom tweaks that have been pending here for a while...

Make sure this is initialized...

More wordsize fixes

Fix a bug in the persistent socket liveness checks and feof(); they were
using the default socket timeout of 60 seconds before returning the socket
to the calling script. The reason they wer

Fix a bug in the persistent socket liveness checks and feof(); they were
using the default socket timeout of 60 seconds before returning the socket
to the calling script. The reason they were using that value is that the
same code is used for feof(), so the fix is allowing the caller to
indicate the timeout value for liveness checks.

A possible remaining issue now is that 0 second timeout[1] for pfsockopen
is possibly too short; it's impossible to specify a sane value for all
possible uses, so maybe we need a stream context or an .ini option to
control this, or maybe use the timeout value that was passed to
pfsockopen().

# [1] by timeout, I mean the time that PHP will wait for data on a
# persistent socket before deciding if a new connection should be made;
# NOT the timeout while waiting for a new connection to be established.

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- A belated happy holidays and PHP 5

this can't be persistent

Removed unused variables.

Add stream_socket_sendto and stream_socket_recvfrom which work very much
like sendto() and recvfrom() syscalls.

(sort of) MFB, feof fix for sockets.

port "liveness" checks and a couple of other things from the 4.3 branch.
Liveness checks are used to validate persistent socket connects when they
are re-used.

Set the EOF indicator after each read attempt.
This prevents it getting stuck in the on position.

Merge selectable descriptor casting from PHP_4_3 branch.

Win32 build fixes for openssl

updating license information in the headers.

Fix warnings.

Add IPv6 support to stream_socket_client/server()

avoid unsigned issues.

64bit fixes

Compiler warning fix.

Don't shutdown() unix sockets.
It causes the server end to close down/break.

Tidy up stupid signed/unsigned issues with win32 by introducing a php_socket_t typedef.

New user-space functions:
. stream_socket_client() - similar to fsockopen(), but more powerful.
. stream_socket_server() - Creates a server socket.
. stream_socket_accept() - Accept

New user-space functions:
. stream_socket_client() - similar to fsockopen(), but more powerful.
. stream_socket_server() - Creates a server socket.
. stream_socket_accept() - Accept a client connection.
. stream_socket_get_name() - Get local or remote name of socket.

Tidy up some leaks and debug printfs.
Move more streams functions into streamsfuncs.c and streamsfuncs.h.

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Add a generic meta data api for streams.

Fixup build for win32

Another big commit (tm).

Main Changes:
- Implement a socket transport layer for use by all code that needs to open
some kind of "special" socket for network or IPC.
- Extension

Another big commit (tm).

Main Changes:
- Implement a socket transport layer for use by all code that needs to open
some kind of "special" socket for network or IPC.
- Extensions can register (and override) transports.
- Implement ftruncate() on streams via the ioctl-alike option interface.
- Implement mmap() on streams via the ioctl-alike option interface.
- Implement generic crypto API via the ioctl-alike option interface.
(currently only supports OpenSSL, but could support other SSL toolkits,
and other crypto transport protocols).

Impact:
- tcp sockets can be overloaded by the openssl capable sockets at runtime,
removing the link-time requirement for ssl:// and https:// sockets and
streams.
- checking stream types using PHP_STREAM_IS_SOCKET is deprecated, since
there are now a range of possible socket-type streams.

Working towards:
- socket servers using the new transport layer
- mmap support under win32
- Cleaner code.

# I will be updating the win32 build to add the new files shortly
# after this commit.

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