From 94691b3cc39f64c1ef7c333f3663df6019b7fbee Mon Sep 17 00:00:00 2001
From: "roberto@sirius" <roberto@sirius>
Date: Mon, 12 Apr 2010 13:07:25 +0200
Subject: [PATCH] Plack::Handler:Uwsgi

---
 contrib/Uwsgi.pm | 133 +++++++++++++++++++++++++++++++++++++++++++++++
 psgi.py          |   3 ++
 2 files changed, 136 insertions(+)
 create mode 100644 contrib/Uwsgi.pm
 create mode 100644 psgi.py

diff --git a/contrib/Uwsgi.pm b/contrib/Uwsgi.pm
new file mode 100644
index 0000000000..9729b3e1e4
--- /dev/null
+++ b/contrib/Uwsgi.pm
@@ -0,0 +1,133 @@
+package Plack::Handler::Uwsgi;
+
+use strict;
+use warnings;
+
+use IO::Socket::INET;
+use HTTP::Status;
+
+use Plack::Util;
+
+sub new {
+    my $class = shift;
+    my $self  = bless {@_}, $class;
+    $self;
+}
+
+sub run {
+    my ($self, $app) = @_;
+
+    my $server = IO::Socket::INET->new(LocalPort => $self->{port}, Listen => 100);
+
+    while ( $client = $server->accept ) {
+
+	my $head = ''
+	my $remains = 4 ;
+
+	while($remains) {
+		$client->recv(my $buf, $remains);	
+		last unless $buf;
+		$head.=$buf;
+		$remains -= length($buf);
+	}
+
+	if (length($head) != 4) {
+		$client->close ;
+		next;
+	}
+
+	my ($mod1, $envsize, $mod2) = unpack('CvC', $head) ;
+
+	unless ($envsize) {
+		$client->close ;
+		next;
+	}
+
+	$remains = $envsize ;
+	my $envbuf = '' ;
+	while($remains) {
+		if ($remains >= 4096) {
+			$client->recv(my $buf, 4096);	
+		}
+		else {
+			$client->recv(my $buf, $remains);	
+		}
+
+		unless($buf) {
+			$client->close ;
+			next;
+		}
+
+		$envbuf.=$buf;
+		$remains -= length($buf);
+	}
+
+	if (length($envbuf) != $envsize ) {
+		$client->close ;
+		next;
+	}
+
+	my %env = {};
+
+	my $i = 0;
+	while($i < $envsize) {
+		my $kl = unpack('v', substr($envbuf, $i, 2)) ; $i+=2;
+		my $key = substr($envbuf, $i, $kl); $i+=$kl;
+		my $vl = unpack('v', substr($envbuf, $i, 2)) ; $i+=2;
+		$env{$key} = substr($envbuf, $i, $vl); $i+=$vl;
+	}
+
+        my $env = {
+            %env,
+            'psgi.version'      => [1,1],
+            'psgi.url_scheme'   => ($env{HTTPS}||'off') =~ /^(?:on|1)$/i ? 'https' : 'http',
+            'psgi.input'        => $client,
+            'psgi.errors'       => *STDERR,
+            'psgi.multithread'  => Plack::Util::FALSE,
+            'psgi.multiprocess' => Plack::Util::TRUE,
+            'psgi.run_once'     => Plack::Util::FALSE,
+            'psgi.streaming'    => Plack::Util::TRUE,
+            'psgi.nonblocking'  => Plack::Util::FALSE,
+        };
+
+        my $res = Plack::Util::run_app $app, $env;
+
+        if (ref $res eq 'ARRAY') {
+            $self->_handle_response($client, $res);
+        }
+        elsif (ref $res eq 'CODE') {
+            $res->(sub {
+                $self->_handle_response($client, $_[0]);
+            });
+        }
+        else {
+            die "Bad response $res";
+        }
+
+    }
+}
+
+sub _handle_response {
+	my ($self, $client, $protocol, $res) = @_;
+
+	$client->send($protocol.' '.$res->[0].' '.HTTP::Status::status_message( $res->[0] )."\r\n";
+
+	my $headers = $res->[1];
+	while (my ($k, $v) = splice @$headers, 0, 2) {
+        	$hdrs .= "$k: $v\r\n";
+	}
+	$hdrs .= "\r\n";
+
+	$client->send($hdrs);
+
+	my $cb = sub { $client->send($_[0]) };
+	my $body = $res->[2];
+	if (defined $body) {
+        	Plack::Util::foreach($body, $cb);
+    	}
+	else {
+		return Plack::Util::inline_object write => $cb,close => sub { };
+    	}
+}
+
+1;
diff --git a/psgi.py b/psgi.py
new file mode 100644
index 0000000000..aa249b4bff
--- /dev/null
+++ b/psgi.py
@@ -0,0 +1,3 @@
+import uwsgi
+
+uwsgi.load_plugin(0, "plugins/psgi/psgi_plugin.so", "test.psgi")