limit spot dup checking to first 12 characters

[spider.git] / perl / Msg.pm

diff --git a/perl/Msg.pm b/perl/Msg.pm
index 746878e26e3c0df1288781e5420b35a1fec18be6..ec2f3b4ca0214836327bb99c8a84aaa60a609b6a 100644 (file)
--- a/perl/Msg.pm
+++ b/perl/Msg.pm
@@ -37,6 +37,7 @@ $now = time;
 BEGIN {
     # Checks if blocking is supported
     eval {
+               local $^W;
         require POSIX; POSIX->import(qw(O_NONBLOCK F_SETFL F_GETFL))
     };
        if ($@ || $main::is_win) {
@@ -50,8 +51,34 @@ BEGIN {
 
        # import as many of these errno values as are available
        eval {
+               local $^W;
                require Errno; Errno->import(qw(EAGAIN EINPROGRESS EWOULDBLOCK));
        };
+
+       unless ($^O eq 'MSWin32') {
+               if ($] >= 5.6) {
+                       eval {
+                               local $^W;
+                               require Socket; Socket->import(qw(IPPROTO_TCP TCP_NODELAY));
+                       };
+               } else {
+                       dbg("IPPROTO_TCP and TCP_NODELAY manually defined");
+                       eval 'sub IPPROTO_TCP {     6 };';
+                       eval 'sub TCP_NODELAY {     1 };';
+               }
+       }
+       # http://support.microsoft.com/support/kb/articles/Q150/5/37.asp
+       # defines EINPROGRESS as 10035.  We provide it here because some
+       # Win32 users report POSIX::EINPROGRESS is not vendor-supported.
+       if ($^O eq 'MSWin32') { 
+               eval '*EINPROGRESS = sub { 10036 };';
+               eval '*EWOULDBLOCK = *EAGAIN = sub { 10035 };';
+               eval '*F_GETFL     = sub {     0 };';
+               eval '*F_SETFL     = sub {     0 };';
+               eval '*IPPROTO_TCP     = sub {     6 };';
+               eval '*TCP_NODELAY     = sub {     1 };';
+               $blocking_supported = 0;   # it appears that this DOESN'T work :-(
+       } 
 }
 
 my $w = $^W;
@@ -109,14 +136,23 @@ sub set_rproc
 sub blocking
 {
        return unless $blocking_supported;
-       
-       my $flags = fcntl ($_[0], F_GETFL, 0);
-       if ($_[1]) {
-               $flags &= ~O_NONBLOCK;
+
+       # Make the handle stop blocking, the Windows way.
+       if ($main::is_win) { 
+         # 126 is FIONBIO (some docs say 0x7F << 16)
+               ioctl( $_[0],
+                          0x80000000 | (4 << 16) | (ord('f') << 8) | 126,
+                          "$_[1]"
+                        );
        } else {
-               $flags |= O_NONBLOCK;
+               my $flags = fcntl ($_[0], F_GETFL, 0);
+               if ($_[1]) {
+                       $flags &= ~O_NONBLOCK;
+               } else {
+                       $flags |= O_NONBLOCK;
+               }
+               fcntl ($_[0], F_SETFL, $flags);
        }
-       fcntl ($_[0], F_SETFL, $flags);
 }
 
 # save it
@@ -356,19 +392,31 @@ sub new_server {
        return $self;
 }
 
+
 sub nolinger
 {
        my $conn = shift;
-       my $buf;
-       if (isdbg('sock') && ($buf = getsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER))) {
-               my ($l, $t) = unpack("ll", $buf);
-               dbg("Linger is: $buf = $l $t");
-       }
-       setsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER, pack("ll", 0, 0)) or confess "setsockopt: $!";
-       if (isdbg('sock') && ($buf = getsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER))) {
-               my ($l, $t) = unpack("ll", $buf);
-               dbg("Linger is: $buf = $l $t");
-       }
+
+       unless ($main::is_win) {
+               if (isdbg('sock')) {
+                       my ($l, $t) = unpack "ll", getsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER); 
+                       my $k = unpack 'l', getsockopt($conn->{sock}, SOL_SOCKET, SO_KEEPALIVE);
+                       my $n = $main::is_win ? 0 : unpack "l", getsockopt($conn->{sock}, IPPROTO_TCP, TCP_NODELAY);
+                       dbg("Linger is: $l $t, keepalive: $k, nagle: $n");
+               }
+               
+               eval {setsockopt($conn->{sock}, SOL_SOCKET, SO_KEEPALIVE, 1)} or dbg("setsockopt keepalive: $!");
+               eval {setsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER, pack("ll", 0, 0))} or dbg("setsockopt linger: $!");
+               eval {setsockopt($conn->{sock}, IPPROTO_TCP, TCP_NODELAY, 1)} or eval {setsockopt($conn->{sock}, SOL_SOCKET, TCP_NODELAY, 1)} or dbg("setsockopt tcp_nodelay: $!");
+               $conn->{sock}->autoflush(0);
+
+               if (isdbg('sock')) {
+                       my ($l, $t) = unpack "ll", getsockopt($conn->{sock}, SOL_SOCKET, SO_LINGER); 
+                       my $k = unpack 'l', getsockopt($conn->{sock}, SOL_SOCKET, SO_KEEPALIVE);
+                       my $n = $main::is_win ? 0 : unpack "l", getsockopt($conn->{sock}, IPPROTO_TCP, TCP_NODELAY);
+                       dbg("Linger is: $l $t, keepalive: $k, nagle: $n");
+               }
+       } 
 }
 
 sub dequeue