get raw headers?

**=?Utf-8?B?YnJ1Y2UgYmFya2Vy?=** · Jun 27 '08, 08:06 PM

RE: get raw headers?

HttpUtility.Url Decode supports a string, and string supports SubString, so it:

string s = HttpUtility.Url Decode(header.S ubString(iStart ,iLen));

though it woudl be simple to spilt and decode (air code)

var values = new Dictionary<stri ng,string>();
foreach (string s in header.Split('& '))
{
var items = s.Split('=');
if (items.Length 1)
{
values.Add(item s[0],HttpUtility.Ur lDecode(items[1]));
}
}

-- bruce (sqlwork.com)

"Mark" wrote:

Is there any easy way to get the raw headers (byte[])?
>
We've got a routine that wants to check the referrer for certain query
string parameters. At the moment, it gets Request.UrlRefe rrer, then skims
through the Uri.Query string looking at the name/value pairs.
>
It's doing a Server.UrlDecod e() on both the name and value portions of the
pair, but UrlDecode() doesn't have an UrlDecode(strin g, start, len) overload
- just an UrlDecode(byte[], start, len, encoding) one.
>
In general, I was poking around the docs and didn't see any obvious way of
getting the raw bytes of a given header. Is there such a thing?
>
Thanks
Mark
>

**Steven Cheng [MSFT]** · Jun 27 '08, 08:06 PM

RE: get raw headers?

Hi Mark,

As Bruce has suggested, you can use HttpUtility.Url Decode(string) overload
to decode the substring from the original UrlReferer path.

As for raw header, it seems ASP.NET hasn't exposed the underlying binary
data. So far you can access the UrlReferer via Request.UrlRefe rrer property
or manually lookup the Request.Headers collection(as a string value).

Is there any other concerns that you need accessing the raw bytes?

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
msdnmg@microsof t.com.

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

>Thread-Topic: get raw headers?
>thread-index: Aci5zgEa37thEtz OTsqUd05rnKujlQ ==
>X-WBNR-Posting-Host: 207.46.193.207
>From: =?Utf-8?B?TWFyaw==?= <mmodrall@nospa m.nospam>
>Subject: get raw headers?
>Date: Mon, 19 May 2008 09:33:01 -0700

>
>Is there any easy way to get the raw headers (byte[])?
>
>We've got a routine that wants to check the referrer for certain query
>string parameters. At the moment, it gets Request.UrlRefe rrer, then skims
>through the Uri.Query string looking at the name/value pairs.
>
>It's doing a Server.UrlDecod e() on both the name and value portions of the
>pair, but UrlDecode() doesn't have an UrlDecode(strin g, start, len)

overload

>- just an UrlDecode(byte[], start, len, encoding) one.
>
>In general, I was poking around the docs and didn't see any obvious way of
>getting the raw bytes of a given header. Is there such a thing?
>
>Thanks
>Mark
>
>

**=?Utf-8?B?TWFyaw==?=** · Jun 27 '08, 08:06 PM

RE: get raw headers?

Hi Bruce, Steven...

Several Microsoft whitepapers on performance optimization for .net say to
steer clear of comparatively wasteful operations like String.Split() for all
the extra objects they create putting burden on the garbage collector. I had
a 1.1 app for reading log files that used Split a lot, and I found with
Perfmon that it was spending 35-45% of the time in garbage collection. I
re-implemented to avoid .Split() and performance improved about 30%.

UrlDecode() had a ranged overload but only for the raw bytes, which seems
kind of odd given how awkward it is to *get* raw bytes of anything you'd want
to UrlDecode().

Thanks
Mark

"Steven Cheng [MSFT]" wrote:

Hi Mark,
>
As Bruce has suggested, you can use HttpUtility.Url Decode(string) overload
to decode the substring from the original UrlReferer path.
>
As for raw header, it seems ASP.NET hasn't exposed the underlying binary
data. So far you can access the UrlReferer via Request.UrlRefe rrer property
or manually lookup the Request.Headers collection(as a string value).
>
Is there any other concerns that you need accessing the raw bytes?
>
Sincerely,
>
Steven Cheng
>
Microsoft MSDN Online Support Lead
>
>
Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
msdnmg@microsof t.com.
>
=============== =============== =============== =====
Get notification to my posts through email? Please refer to

Microsoft Learn: Build skills that open doors in your career

http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif

Gain technical skills through documentation and training, earn certifications and connect with the community

ications.
>
=============== =============== =============== =====
This posting is provided "AS IS" with no warranties, and confers no rights.
>
--------------------

Thread-Topic: get raw headers?
thread-index: Aci5zgEa37thEtz OTsqUd05rnKujlQ ==
X-WBNR-Posting-Host: 207.46.193.207
From: =?Utf-8?B?TWFyaw==?= <mmodrall@nospa m.nospam>
Subject: get raw headers?
Date: Mon, 19 May 2008 09:33:01 -0700

>

Is there any easy way to get the raw headers (byte[])?

We've got a routine that wants to check the referrer for certain query
string parameters. At the moment, it gets Request.UrlRefe rrer, then skims
through the Uri.Query string looking at the name/value pairs.

It's doing a Server.UrlDecod e() on both the name and value portions of the
pair, but UrlDecode() doesn't have an UrlDecode(strin g, start, len)

overload

- just an UrlDecode(byte[], start, len, encoding) one.

In general, I was poking around the docs and didn't see any obvious way of
getting the raw bytes of a given header. Is there such a thing?

Thanks
Mark

>
>

**Steven Cheng [MSFT]** · Jun 27 '08, 08:06 PM

RE: get raw headers?

Thanks for the reply Mark,

Yes, the UrlDecode method is not quite useful for those already
encapsulated string values (from raw bytes) in asp.net. However, the
UrlDecode(like many other encoding/decoding methods) belong to the
HttpUtility class which is not restricted to be used in ASP.NET application
only. You can also use it to do UrlEncode/Decode in your own application
which may need to convert some raw byte array to string format encoded
array. For example, if you're writing own http components that may need
such utility function.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
msdnmg@microsof t.com.

=============== =============== =============== =====
Get notification to my posts through email? Please refer to

Microsoft Learn: Build skills that open doors in your career

http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif

Gain technical skills through documentation and training, earn certifications and connect with the community

ications.

=============== =============== =============== =====
This posting is provided "AS IS" with no warranties, and confers no rights.
--------------------

>From: =?Utf-8?B?TWFyaw==?= <mmodrall@nospa m.nospam>
>References: <6F937A57-E486-4126-87D9-B563DDD4261F@mi crosoft.com>

<GEcinIjuIHA.45 12@TK2MSFTNGHUB 02.phx.gbl>

>Subject: RE: get raw headers?
>Date: Tue, 20 May 2008 07:11:01 -0700
>
>Hi Bruce, Steven...
>
>Several Microsoft whitepapers on performance optimization for .net say to
>steer clear of comparatively wasteful operations like String.Split() for

all

>the extra objects they create putting burden on the garbage collector. I

had

>a 1.1 app for reading log files that used Split a lot, and I found with
>Perfmon that it was spending 35-45% of the time in garbage collection. I
>re-implemented to avoid .Split() and performance improved about 30%.
>
>UrlDecode() had a ranged overload but only for the raw bytes, which seems
>kind of odd given how awkward it is to *get* raw bytes of anything you'd

want

>to UrlDecode().
>
>Thanks
>Mark
>
>"Steven Cheng [MSFT]" wrote:
>

>Hi Mark,
>>

get raw headers?

get raw headers?

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