I found this code from Mojolicious::Plugin::Proxy works like a charm:
$self->client->async->get($url, sub {
my ($self, $tx) = @_;
if (my $res=$tx->success) {
$self->tx->res($res);
$self->rendered;
}else {
my ($msg,$error) = $tx->error;
$self->tx->res->headers->add('X-Remote-Status',$error.': '.$msg);
$self->render(
status => 500,
text => 'Failed to fetch data from backend'
);
}
})->start;
On Friday, February 3, 2017 at 1:05:52 PM UTC+1, rasta wrote:
>
> Hi!
>
> I'm using mojolicious 6.11. I have a proxy environment like this:
>
> apache -> hypnotoad -> tomcat
>
> and the proxy code looks like this:
>
> sub proxy {
>
> ...
>
> if (Mojo::IOLoop->is_running) {
> $self->render_later;
> $self->ua->get(
> $url,
> sub {
> my ($c, $tx) = @_;
> _proxy_tx($self, $tx);
> }
> );
> }else {
> my $tx = $self->ua->get($url);
> _proxy_tx($self, $tx);
> }
> }
>
> sub _proxy_tx {
> my ($c, $tx) = @_;
> if (my $res = $tx->success) {
> $c->tx->res($res);
> $c->rendered;
> }
> else {
> my $error = $tx->error;
> $c->tx->res->headers->add('X-Remote-Status', $error->{code} . ': ' .
> $error->{message});
> $c->render(status => 500, text => 'Failed to fetch data:
> '.$c->app->dumper($tx->error));
> }
> }
>
> Am I doing this right at all? I thought it's going to stream the stuff
> through but that's not happening, mojo writes the data down to it's
> mojo.tmp file and it seems that nothing comes out unless it fetched the
> whole file from tomcat. The problem is it works for smaller files but when
> I'm proxying 2.7GB file after the mojo.tmp file reaches ~ 2.5GB I'll get
>
> The proxy server received an invalid response from an upstream server.
> The proxy server could not handle the request *GET
> /api/object/o:292171/diss/Content/download
> <https://services.phaidra.univie.ac.at/api/object/o:292171/diss/Content/download>*
> .
>
> Reason: *Error reading from remote server*
>
> from Apache. In tomcat log it seems the file was sent OK (the bytesize
> matches and the response is 200). Mojo will log
> "Nothing has been rendered, expecting delayed response"
> before it starts proxying but nothing afterwards.
>
> Any idea what could be wrong here or how to do this better? Otherwise I'd
> have to send a redirect but I'd like to avoid that.
>
> Thanks!
> Rasta
>
>
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