[REBOL] Solution: Proxy-Authentication Bug in REBOL/View-Panel
From: jsc:dataheaven at: 26-Sep-2000 21:55
I earlier posted a quick-hack to allow to use the REB-Access
through Proxies/Firewalls.
But there was another Bug in the patched read-net function
that prevents read-net to work through Proxies that want a
username and a password for authentication.
This is another quick hack to solve this:
read-net: func [
{Read a file from the net (web). Update progress bar. Allow abort.}
host-name
path
/progress callfunc port-hand
/local port buffer hdr-brk get-data body time data errc size wholepath
][
if error? try [
port: open/direct/binary/no-wait
[scheme: 'tcp
host:
system/schemes/default/proxy/host
port-id:
system/schemes/default/proxy/port-id]
wholepath: rejoin ["http://" host-name path]
] [return none]
insert port rejoin [
"GET " wholepath " HTTP/1.0" crlf
"User-Agent: REBOL/View " system/version crlf
"Accept: */*" crlf
"Host: " host-name crlf
"Proxy-Authorization: " join "Basic " enbase
join system/schemes/default/proxy/user
[#":" system/schemes/default/proxy/pass]
crlf
"Connection: close" crlf
crlf
]
buffer: make binary! 4000
hdr-brk: rejoin [crlf crlf]
size: none
errc: 900
get-data: func [port] [
if none? data: copy port [close port return 'break]
append buffer data
if all [not size body: find/tail buffer hdr-brk] [
parse buffer [
"HTTP" thru " " copy errc [to " " | to newline]
(errc: load/all errc)
thru "Content-length:" copy size to newline]
if errc > 299 [close port return 'break]
size: either size [to-integer trim size] [10000]
remove/part buffer body
buffer: make binary! size + 32
append buffer head body
]
if all [size progress] [callfunc size length? buffer]
]
dispatch append copy any [port-hand []] [
port :get-data
30 [print "TIMEOUT***********" close port 'break]
]
if errc < 300 [return buffer]
]
IMPORTANT:
If you want to use this function you have to set your default-proxy "host" ,
port-id
, "user" and "pass" parameters.
If you do not need proxy-authentication you have to use the function of my
earlier post.
Experienced readers will easily find the lines I've changed in comparison
to the old function.
But let's face it - this is an ugly hack, that makes that read-net doesn't
work without a proxy (and now authentication) anymore.
What someone (at RT?) should do now is to ad the proper tests if
a Proxy should be used and then does the connection and request either
the old direct way or the new "proxied" way.
Heres an outline:
1) Test if a default-proxy is set
2) Test if requested hostname is in he "bypass" default-proxy settings
3) if 1) is false or 2) is true use the old code
otherwise use the default-proxy for connection, the whole url in the
request and obviously the username and password for proxy-authorization
I've think I'll send a feedback to RT and hope they will finally fix this in
a nice way.
Jochen
