[ naviserver-Bugs-1663763 ] /*.tcl files always returned w/ Transfer-Encoding: chunked?

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Bugs item #1663763, was opened at 2007-02-19 19:24
Message generated for change (Comment added) made by sdeasey
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Category: naviserver - libnsd, libnsthread, nsd
Group: Bug 
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Michael A. Cleverly (cleverly)
>Assigned to: Stephen Deasey (sdeasey)
Summary: /*.tcl files always returned w/ Transfer-Encoding: chunked?

Initial Comment:
AFAICT (with enabletclpages on), any *.tcl page under the documentroot will have its content returned to the user with a Transfer-Encoding: chunked, regardless of whether the request is HTTP/0.9, HTTP/1.0 or HTTP/1.1.  

For modern browsers this isn't an issue as they'll generally always make (and understand a response in) HTTP/1.1 requests.  But for some clients (i.e., Lynx, wget, etc.) that don't expect an HTTP/1.1 encoded reply the transfer-encoding byte ranges end up being interpreted as part of the request body.

For example, I have the following one line script in $NSHOME/pages/hello.tcl:

    ns_return 200 text/plain "Hello World"


## HTTP/1.1 request (expected result)
michael@ned:/usr/local/ns/pages$ telnet localhost 80
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GET /hello.tcl HTTP/1.1
Host: localhost
Connection: close

HTTP/1.1 200 OK
MIME-Version: 1.0
Accept-Ranges: bytes
Date: Mon, 19 Feb 2007 19:06:01 GMT
Server: NaviServer/4.99.2
Content-Type: text/plain; charset=utf-8
Transfer-Encoding: chunked
Connection: close

b
Hello World
0

Connection closed by foreign host.

## HTTP/1.0 request (unexpected result)
michael@ned:/usr/local/ns/pages$ telnet localhost 80
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GET /hello.tcl HTTP/1.0
Connection: close

HTTP/1.1 200 OK
MIME-Version: 1.0
Accept-Ranges: bytes
Date: Mon, 19 Feb 2007 19:06:14 GMT
Server: NaviServer/4.99.2
Content-Type: text/plain; charset=utf-8
Transfer-Encoding: chunked
Connection: close

b
Hello World
0

Connection closed by foreign host.

## HTTP/0.9 request (unexpected result; do we need 
## to even support HTTP/0.9 really?)
michael@ned:/usr/local/ns/pages$ telnet localhost 80
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GET /hello.tcl
b
Hello World
0

Connection closed by foreign host.

## From Lynx (unexpected result)
michael@ned:/usr/local/ns/pages$ lynx -dump http://localhost/hello.tcl
b
Hello World
0


(All of the above tested with Naviserver compiled from CVS HEAD as of Feb 7th, 2007 & Tcl 8.4.14 under Debian.)

----------------------------------------------------------------------

>Comment By: Stephen Deasey (sdeasey)
Date: 2007-02-23 00:57

Message:
Logged In: YES 
user_id=87254
Originator: NO

Current status:

All responses from Tcl/ADP scripts to HTTP/1.1 clients will be sent in the
chunked transfer encoding.

All responses from Tcl/ADP scripts to HTTP/1.0 clients will have their
connections close. No keep-alives.

Static pages work as expected.


----------------------------------------------------------------------

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