此服务器工作正常,但如果我这样做
bash $(echo -n“abcd”; sleep 50; echo“efgh”)| nc localhost 9090
服务器阻塞50秒。在我的完整代码中,我有多个IO::Select::INET
。我有另一个套接字侦听其他端口(1234),当服务器被睡眠阻塞时,我无法处理该端口中的任何内容。我尝试按getline
更改getc
,但我只读了第一个字母“a”并且它会阻止。
有人可以帮助我吗?
use common::sense;
use IO::Select;
use IO::Socket;
use constant PORT1 => 9090;
use constant TIMEOUT => 1;
my $event_socket = new IO::Socket::INET(Listen => 1, LocalPort => PORT1, ReuseAddr => 1)
or die "Can't bind event_socket: $@\n";
my $sel = IO::Select->new;
$sel->add($event_socket);
my $event_emiter = undef;
while(1){
foreach my $sock (my @ready = $sel->can_read(TIMEOUT)) {
if ($sock == $event_socket) {
my $new = $event_socket->accept;
binmode($new, ":encoding(UTF-8)");
$sel->add($new);
$event_emiter=$new;
warn "[event socket] connect from ",$new->peerhost, "\n";
} elsif ($sock == $event_emiter) {
unless($sock->eof){
my $recv_data = $sock->getline;
warn "[event socket] LOL '$recv_data'\n";
} else {
$sel->remove($sock);
$sock->close;
$event_emiter = undef;
warn "[socket] disconnect\n";
}
} else {
$sel->remove($sock);
$sock->close;
warn "[socket] disconnect\n";
}
}
}
答案 0 :(得分:5)
在阅读换行符之前,您不会阅读可用数据。始终使用sysread
。
更改
elsif ($sock == $event_emiter) {
unless($sock->eof){
my $recv_data = $sock->getline;
warn "[event socket] LOL '$recv_data'\n";
} else {
$sel->remove($sock);
$sock->close;
$event_emiter = undef;
warn "[socket] disconnect\n";
}
}
到
elsif ($sock == $event_emiter) {
our $buf; local *buf = \$bufs{$fh}; # alias $buf = $bufs{$fh};
my $rv = sysread($fh, $buf, 64*1024, length($buf));
if (!$rv) {
if (defined($rv)) { # EOF
# ... Handle anything left in $buf ...
} else { # Error
# ... Handle error ...
}
delete $bufs{$fh};
$sel->remove($sock);
$sock->close;
$event_emiter = undef;
warn "[socket] disconnect\n";
next;
}
while ($buf =~ s/^(.*)\n//) {
warn "[event socket] LOL '$1'\n";
}
}
在select循环之外添加my %bufs;
。
答案 1 :(得分:0)
它在这里阻止:
my $recv_data = $sock->getline;
这是因为getline()阻塞了等待\n
的调用。相反,您应该sysread()
并将命令组合在单独的缓冲区中。