apt-get does't work with http_proxy

[zhang sheng]

I use lubuntu 16.04.
$ uname -a
Linux ubuntu 4.4.0-22-generic #40-Ubuntu SMP Thu May 12 22:03:46 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

$ dpkg -l |grep apt
ii apt 1.2.10ubuntu1 amd64 commandline package manager

When I set "http_proxy" environment var and run "apt-get update", I get many "connection failed"
Err:16 http://archive.ubuntu.com/ubuntu xenial/main Sources
  Connection failed
Err:17 http://archive.ubuntu.com/ubuntu xenial/restricted Sources
  Connection failed
Err:18 http://archive.ubuntu.com/ubuntu xenial/universe Sources
  Connection failed
Err:19 http://archive.ubuntu.com/ubuntu xenial/multiverse Sources
  Connection failed
Err:20 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
  Connection failed
Err:21 http://archive.ubuntu.com/ubuntu xenial/main i386 Packages
  Connection failed

But I can use curl and wget to fetch website homepage.
And in centos7, yum can work with 'http_proxy', I can update my centos7.

[David Kalnischkies (donkult)]

What type of proxy is that? Given you were using it before I presume its an HTTP proxy. Does the URI you specify has "http://" in front? Is that perhaps a public proxy? We have a test covering HTTP proxies and I have just run an upgrade myself with a SOCKS proxy so that more likely something specific to your setup than a general "everything broken" case…

Please run apt with some debug options enabled: -o Debug::Acquire::http=1 -o Debug::pkgAcquire::Worker=1

Beware: That generates a lot of output, so you might want to add also somthing like: 2>&1 | tee apt-update.log

[zhang sheng (langyxxl)]

$ export http_proxy=http://192.168.1.1:8080
$ apt-get -o Debug::Acquire::http=1 -o Debug::pkgAcquire::Worker=1 update >apt-update.log 2>&1

I paste all output at "http://paste.ubuntu.com/23060145/"

I find something strange. I can't find port 8080 at debug output.
Does apt can't specify proxy port?

[zhang sheng (langyxxl)]

I use tcpdump to capture http request among "yum" "wget" "apt-get".
# yum repolist
Hypertext Transfer Protocol
    GET http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock HTTP/1.1\r\n
    User-Agent: urlgrabber/3.10 yum/3.4.3\r\n
    Host: mirrorlist.centos.org\r\n
    Accept: */*\r\n
    Proxy-Connection: Keep-Alive\r\n
    \r\n
    [Full request URI: http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock]
    [HTTP request 1/1]
    [Response in frame: 8]

# wget http://archive.ubuntu.com/ubuntu/dists/xenial/restricted/i18n/Translation-zh
Hypertext Transfer Protocol
    GET http://archive.ubuntu.com/ubuntu/dists/xenial/restricted/i18n/Translation-zh HTTP/1.1\r\n
    User-Agent: Wget/1.17.1 (linux-gnu)\r\n
    Accept: */*\r\n
    Accept-Encoding: identity\r\n
    Host: archive.ubuntu.com\r\n
    Connection: Keep-Alive\r\n
    Proxy-Connection: Keep-Alive\r\n
    \r\n
    [Full request URI: http://archive.ubuntu.com/ubuntu/dists/xenial/restricted/i18n/Translation-zh]
    [HTTP request 1/1]
    [Response in frame: 1180]

# apt-get update
Hypertext Transfer Protocol
    GET http://archive.ubuntu.com/ubuntu/dists/xenial/restricted/i18n/Translation-zh HTTP/1.1\r\n
    Host: archive.ubuntu.com\r\n
    Cache-Control: max-age=0\r\n
    Accept: text/*\r\n
    User-Agent: Debian APT-HTTP/1.3 (1.2.10)\r\n
    \r\n
    [Full request URI: http://archive.ubuntu.com/ubuntu/dists/xenial/restricted/i18n/Translation-zh]
    [HTTP request 1/1]

Only "apt-get" doesn't have "Proxy-Connection: Keep-Alive", how can i add "Proxy-Connection: Keep-Alive" to apt-get? I need to verify this.

[zhang sheng (langyxxl)]

Finally I find the problem is User-Agent string in apt-get.

see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=355782

[Julian Andres Klode (juliank)]

Marking as invalid then.