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Questions tagged [rfc]

An RFC is a "Request For Comments": the form of internet standards from the Internet Engineering Task Force (IETF) until they are made standards. And the usual form of reference to those standards.

An RFC is a "Request For Comments": the form of internet standards from the Internet Engineering Taskforce (IETF) until they are made standards. And the usual form of reference to those standards.

Official Site: http://www.ietf.org/rfc.html

590 questions
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RFC 2119 and use of "MAY"

I'm wondering about the scope of the interpratation of the RFC 2119's MAY word. Let's take an example: The yellow button of the system MAY be stop the process. In this phrase, according to the definition of MAY, the yellow button of the system is…
Zag zag..
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May every IPv6 address be written as an IPv4-mapped IPv6-address?

In RFC 5952 - section 5 it is stated that for some IPv6 addresses it is recommended to give the mixed notation, if it has a certain prefix. However, it is unclear which prefixes are used for this, because it is stated that a prefix may be used if it…
Dennis
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php headers mail headers "554 Message not allowed - Headers are not RFC compliant[291]"

I'm having problems sending email to yahoo.com email addresses, the mail I send from my php script works perfectly for every other domain i send it to apart from one of our users who insists on keeping her yahoo email. here are my headers …
hippytyre
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What is the correct XDR syntax for a variable-length array of strings?

I am reading the RFC 4506 to understand the XDR data definition language. It mentions that variable-length arrays are declared as follows. type-name identifier; It also mentions that variable-length strings are declared as follows. string…
merlin2011
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Year 2038 bug, can I deviate from the OpenPGP RFC?

The RFC 4880, a document that describes the OpenPGP cryptography standard, finds its roots in RFC 2440, published in 1998 (that's sixteen years ago, supposedly before 64-bit systems emerged). Both specifications tell the same thing about how…
Diti
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UNSAF method for UDP in rfc 4787

I was going through rfc 4787 and the author mentions about UNSAF method . What is UNSAF method ?
user2139084
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Delphi HMAC-SHA1 unexpected results

I am writing in an old version of Delphi (Delphi 5) for reasons I could not possibly explain in this thread. I am trying to implement an HOTP and currently all of my code is working short of the HMACSHA1 portion and I do not understand why. I…
Kyle Jurick
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Generic MIME type for a MIME entity?

Is there such a thing as a generic MIME type for a MIME entity? A MIME entity would be something that consists of a header section, followed by a blank line, followed by a body section (with CRLF line endings) according to RFC 2045/2046. An example…
buge
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Empty productions in RFC 5234 (Augmented BNF)

Does Augmented BNF (as specified by RFC 5234) allow matches to empty string? From reading grammar of the Augmented BNF itself (section 4, ABNF Definition of ABNF) it seems to me that the only way is to use empty quotes (""): empty-rule =…
Adam Badura
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"NOTICE AUTH" notifications when connecting to IRC server

As a learning exercise, I'm writing a Python program to connect to a channel on an IRC network, so I can output messages in the channel to stdout. I'm using asynchat and manually sending the protocol messages, rather than using something like…
graememcc
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Does IE10 send illegal POST requests?

I've got a wireshark capture of a POST request sent by IE10. The POST request is issued as specified by RFC 1867 and it includes a boundary: Content-Type: multipart/form-data; boundary=945637143527273; charset=UTF-8 What strikes me rather odd is…
eckes
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How do I compute an RFC 791 IP header checksum?

I am rolling my own IP packets for a teach-yourself-Ruby project, and need to compute the IP header checksum (as described in RFC 791 p.14). One of the related questions that popped up when I typed my question here pointed me at RFC 1071, so I'm…
Josh Glover
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Specific uses of reserved characters in HTTP URLs

I have seen a LOT of pages which give the same lists of unreserved and reserved characters for URIs, so I have a good idea what characters are allowed and disallowed and in what contexts generally speaking. However, there is almost ZERO…
Vector Gorgoth
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RTP H.264 Packet Depacketizer

Usually for videos the marker bit of RTP Packet indicates the last packet of the RTP. So, with this it is guaranteed that I will receive 1 frame per packet or can receive more than one? In the case beyond the depacketization I would have to make a…
pcbb
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C Programming - Sending HTTP Request

My recent assignment is to make a proxy in C using socket programming. The proxy only needs to be built using HTTP/1.0. After several hours of work, I have made a proxy that can be used with Chromium. Various websites can be loaded such as google…
StayPuff
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