Re: Different response content-type when including -I

Hi Tom,

-I will trigger a HEAD request instead of GET. Try curl -v
https://broken-avatars-one.gogitlab.ml/uploads/-/system/user/avatar/1/avatar.png
 -X HEAD to get the same response.

HTH!

Regards,
Bartek

śr., 8 sty 2020 o 16:19 Toon Claes via curl-users <curl-users_at_cool.haxx.se>
napisał(a):

> Hi,
>
> I was debugging a content-type issue I was having in my application, and
> I noticed something weird. Let me demonstrate:
>
> On my server there's a file names 'avatar.png', but in fact the file
> contains "Hello world", in plain text.
>
> To fetch the file I'm seeing different behavior when I use the -I
> command line param and when I don't. See the output below:
>
> curl -v
> https://broken-avatars-one.gogitlab.ml/uploads/-/system/user/avatar/1/avatar.png
> * Trying 35.205.109.182:443...
> * TCP_NODELAY set
> * Connected to broken-avatars-one.gogitlab.ml (35.205.109.182) port 443
> (#0)
> * ALPN, offering h2
> * ALPN, offering http/1.1
> * successfully set certificate verify locations:
> * CAfile: none
> CApath: /etc/ssl/certs
> * TLSv1.3 (OUT), TLS handshake, Client hello (1):
> * TLSv1.3 (IN), TLS handshake, Server hello (2):
> * TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
> * TLSv1.3 (IN), TLS handshake, Certificate (11):
> * TLSv1.3 (IN), TLS handshake, CERT verify (15):
> * TLSv1.3 (IN), TLS handshake, Finished (20):
> * TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
> * TLSv1.3 (OUT), TLS handshake, Finished (20):
> * SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
> * ALPN, server accepted to use h2
> * Server certificate:
> * subject: CN=broken-avatars-one.gogitlab.ml
> * start date: Dec 6 08:39:36 2019 GMT
> * expire date: Mar 5 08:39:36 2020 GMT
> * subjectAltName: host "broken-avatars-one.gogitlab.ml" matched cert's
> "broken-avatars-one.gogitlab.ml"
> * issuer: C=US; O=Let's Encrypt; CN=Let's Encrypt Authority X3
> * SSL certificate verify ok.
> * Using HTTP2, server supports multi-use
> * Connection state changed (HTTP/2 confirmed)
> * Copying HTTP/2 data in stream buffer to connection buffer after
> upgrade: len=0
> * Using Stream ID: 1 (easy handle 0x562fcbe9db50)
> > GET /uploads/-/system/user/avatar/1/avatar.png HTTP/2
> > Host: broken-avatars-one.gogitlab.ml
> > user-agent: curl/7.67.0
> > accept: */*
> >
> * TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
> * TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
> * old SSL session ID is stale, removing
> * Connection state changed (MAX_CONCURRENT_STREAMS == 128)!
> < HTTP/2 200
> < server: nginx
> < date: Wed, 08 Jan 2020 14:57:39 GMT
> < content-type: text/plain; charset=utf-8
> < content-length: 12
> < ... [TRUNCATED]
>
> Compared to:
>
> curl -Iv
> https://broken-avatars-one.gogitlab.ml/uploads/-/system/user/avatar/1/avatar.png
> * Trying 35.205.109.182:443...
> * TCP_NODELAY set
> * Connected to broken-avatars-one.gogitlab.ml (35.205.109.182) port 443
> (#0)
> * ALPN, offering h2
> * ALPN, offering http/1.1
> * successfully set certificate verify locations:
> * CAfile: none
> CApath: /etc/ssl/certs
> * TLSv1.3 (OUT), TLS handshake, Client hello (1):
> * TLSv1.3 (IN), TLS handshake, Server hello (2):
> * TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
> * TLSv1.3 (IN), TLS handshake, Certificate (11):
> * TLSv1.3 (IN), TLS handshake, CERT verify (15):
> * TLSv1.3 (IN), TLS handshake, Finished (20):
> * TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
> * TLSv1.3 (OUT), TLS handshake, Finished (20):
> * SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
> * ALPN, server accepted to use h2
> * Server certificate:
> * subject: CN=broken-avatars-one.gogitlab.ml
> * start date: Dec 6 08:39:36 2019 GMT
> * expire date: Mar 5 08:39:36 2020 GMT
> * subjectAltName: host "broken-avatars-one.gogitlab.ml" matched cert's
> "broken-avatars-one.gogitlab.ml"
> * issuer: C=US; O=Let's Encrypt; CN=Let's Encrypt Authority X3
> * SSL certificate verify ok.
> * Using HTTP2, server supports multi-use
> * Connection state changed (HTTP/2 confirmed)
> * Copying HTTP/2 data in stream buffer to connection buffer after
> upgrade: len=0
> * Using Stream ID: 1 (easy handle 0x564063725b50)
> > HEAD /uploads/-/system/user/avatar/1/avatar.png HTTP/2
> > Host: broken-avatars-one.gogitlab.ml
> > user-agent: curl/7.67.0
> > accept: */*
> >
> * TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
> * TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
> * old SSL session ID is stale, removing
> * Connection state changed (MAX_CONCURRENT_STREAMS == 128)!
> < HTTP/2 200
> HTTP/2 200
> < server: nginx
> server: nginx
> < date: Wed, 08 Jan 2020 15:04:33 GMT
> date: Wed, 08 Jan 2020 15:04:33 GMT
> < content-type: image/png
> content-type: image/png
> < cache-control: max-age=300, public
> cache-control: max-age=300, public
> < content-disposition: inline; filename*=UTF-8''avatar.png;
> filename="avatar.png"
> content-disposition: inline; filename*=UTF-8''avatar.png;
> filename="avatar.png"
> < content-transfer-encoding: binary
> content-transfer-encoding: binary
>
>
> So I'd like to understand why when including `-I` I'm getting
> 'content-type: image/png', even while 'accept: */*' is in the request?
>
> --
> Toon
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Received on 2020-01-08