Perl HTTP/1.1 206 Partial Content

Question

How can I set my server's HTTP response to:

HTTP/1.1 206 Partial Content

In PHP I would write header('HTTP/1.1 206 Partial Content') but what about in Perl CGI?

I'm using this code but the client reports an HTTP 500 error

if ( defined $ENV{HTTP_RANGE} ) {

    my $startrange = 500;
    my $endrange = 900;
    $length = $endrange-$startrange;

    print qq{HTTP/1.1 206 Partial Content\n};
    my $range = $startrange.'-'.$endrange.'/'.$filesize;
    print qq{Content-Range: bytes $range\n};
}

print qq{Accept-Ranges: bytes\n};
print qq{Content-Disposition: attachment; filename="$filename"\n};
print qq{Content-length: $length\n\n};

I have checked the error log, which says this:

malformed header from script 'download.cgi': Bad header: HTTP/1.1 206 Partial Content

You can't get an HTTP 500 error on the server. You have given way too little information. Show your code and describe the network — Borodin
– Borodin, Commented Jun 5, 2016 at 18:59
@Borodin i have just updated the question, check the code, .. for some reason i'm getting HTTP 500 error but if i remove that line print qq{HTTP/1.1 206 Partial Content\n}; i get 200 OK, i need to get 206 Partial Content for resumable download — Abdelhafidh Belalia
– Abdelhafidh Belalia, Commented Jun 5, 2016 at 19:06
@Borodin, You are incorrect! CGI responses differs from HTTP responses! But what do I know about HTTP or CGI? I have only written most Engines for Catalyst, HTTP::Body, HTTP::Tiny and maintains FCGI ;o) — chansen
– chansen, Commented Jun 5, 2016 at 20:58
@chansen: Yes, my senses departed me and I made a mistake. Your reminder that this is CGI and not bare HTTP restored them. Thank you — Borodin
– Borodin, Commented Jun 5, 2016 at 21:03

Community · Accepted Answer · 2021-10-07 10:55:51Z

2

You should not send a HTTP status line for Partial Content response in a CGI script. Your script should send a correct CGI response:

1*header-field NL [ response-body ]

This should work:

Status: 206 Partial Content\n
Content-Range: bytes 500-900/12000\n
Content-Type: ?\n

Your script must also send a Content-Type header:

If an entity body is returned, the script MUST supply a Content-Type field in the response.

edited Oct 7, 2021 at 10:55

CommunityBot

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answered Jun 5, 2016 at 20:04

chansen

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2 Comments

Abdelhafidh Belalia Over a year ago

That what i was looking for. Thank you ^^

chansen Over a year ago

@Borodin, CGI responses differs from HTTP responses! First and second hyperlink refers to the HTTP standard, third and forth hyperlinks refers to the CGI standard.

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