rfc 1035

token bus network,802.5 for the Token Ring network. The common features of these three are defined by the 802.2 Standard, which is the logical link control (LLC) shared by the 802 network.Note: IEEE 802.2 and 802.3 define a different frame format than Ethernet.(3) related RFC documentationIn TCP/IP, the encapsulation of an Ethernet IP datagram is defined in RFC 894 . IEEE 802 The IP datagram encapsulation

secure HTTP transactions. For these requirements, it is more appropriate to use Transport Layer Security (Transport layer Safety, TLS) and secure HTTP (secure HTTP, HTTPS) protocols.However, abstract authentication is much more powerful than the basic authentication it is to replace. Abstract authentication is also much more powerful than many of the common strategies that are recommended for use by other Internet services (such as CRAM-MD5 that have been recommended for LDAP, pop, and IMAP)So

generally used to increase resource information, delete is generally used to delete resource information RFC Quest: RFC definition: Request for Comments (English: Request for Comments, abbreviated as RFC), is a series of memos published by the Internet Engineering Task Force (IETF). The document collects information about the In

In the previous article, the experimental environment was built. The protocol analysis can be performed once the IKE/IPSEC protocol is fully run and the relevant output and capture packets are collected. During the analysis, we will use the output of the IKE process and the Wireshark grab packet, combined with the relevant RFC, using Python to verify the calculation. First look at the full operation of the Protocol (filtering out irrelevant messages,

New features of PHP7 this article is based on new files at PHP release. link: PHP 7 new Features Added ?? Operator Added New operators Php // PHP 7 before writing: compare two numbers of function order_func ($ a, $ B) {return ($ a Added \ u {xxxxx} Unicode Codepoint Escape SyntaxYou can use this method to output unicode characters directly. Phpecho "\ u {1F602}"; // outputs (this is the question mark in square brackets. as it is a unicode character, it is not supported by the sg

Reprint: http://www.cnblogs.com/ishangs/p/3816689.htmlApplication of Stun/turn/ice protocol in peer-to sip (II.)1 description2 dozen holes and the concept of crossing ... 13 hitting holes and crossing ... 24 using the STUN Series Protocol traversal features ... 25 Stun/turn/ice The relationship of the agreement ... 36 Stun protocol (RFC 5389) 36.1 Why the STUN protocol is used ... 3How the 6.2 stun protocol works ... 47 Turn protocol ... 47.1 Why the

Use Socket to send emails-continued author: limodou I have previously written an article about how to use socket programming to send emails to solve the problem that web servers do not support mail () function problems. It can also be used after my tests. However, many free email providers (starting from 263, SyntaxHighlighter. Use Socket to send emails-continued author: limodou I have previously written an article about how to use socket programming to send emails to solve the problem that web

to Use cl_dd_document to output the title header in ALV How to output the title header in ALV How to solve the problem of displaying the negative symbols before ALV How to Use 'f4if _ int_table_value_request 'to fill in multiple fields on the screen How to return the fields hidden in the 'f4if _ int_table_value_request 'function SAP Enhancement Num Description SAP User export type

This article is based on the new files when PHP was released, link address: PHP 7 new Features at a glance Added?? operator Added New operator php//PHP 7: Compare the size of two numbers function Order_func ($a, $b) { return ($a Added \u{xxxxx} Unicode codepoint Escape SyntaxYou can output Unicode characters directly using this method Phpecho "\u{1f602}"; Outputs (this is the question mark inside the square brackets, because it is a Unicode character, the SG blog

: The E modifier indicates that the Preg_replace function is used to evaluate the replacement string as PHP code, rather than just a simple string substitution. Unsurprisingly, this kind of behavior will continue to have security problems. This is why using this modifier in PHP5.5 throws a deprecated warning. As an alternative, you should use the Preg_replace_callback function. You can find more information about this change from the RFC. Second, new

Examples of adding partitions using Fdisk;In this example we will add two 200M primary partitions, the others are extended partitions, we add two 200M-size logical partitions in the extended partitionCommand (M for help): P Note: Lists the partition table;disk/dev/sda:1035 MB, 1035730944 bytesHeads, Sectors/track, cylindersUnits = Cylinders of 16128 * 8257536 bytesDevice Boot Start End Blocks Id SystemCommand (M for help): N Note: Add partition;Comman

input FTP 4. Add Endpoints to Portal The azure VM should know that underneath the virtual machine there is a endpoints tab, we can add some http,ftp below ..., port, as shown in the following figure A. For active FTP you need to allow access to the FTP Command port and the (FTP data port) port, so you need to add these two ports to your Azure VM under endpoints: tcp/20,tcp/21.b. For passive FTP , we need to tell the FTP server can be used for data connection of the port range, the scope

In the web domain, we are familiar with three professional vocabulary uri,url,urn, for these three words we may know its original intention, its relationship with each other, but for Uri,urn there is always a layer of hazy sense, because the URI is abstract concept, and URN away from the reality of development. Here are some analysis of these 3 concepts to try to clarify their internal logic.First you need to know IETF,RFCBefore we know the 3 professional nouns above, we need to understand the I

and multiple options can be carried at the same time. The first byte of each option is the Information Code, the last byte is the Data Length of the item, and finally the project content. Code Len value this field is fully compatible with BOOTP, and more options are expanded. DHCP packets can be encoded as 0x53 to set the encapsulation category: item value category.1 DHCP discover2 DHCP offer3 DHCP Request4 DHCPDECLINE5 dhcpack6 dhcpnack7 dhcprelease DHCP has many options. For more information,

characters and binary format attachments. This standard is defined in;RFC 2045,; RFC 2046,; RFC 2047,; RFC 2048, and RFC 2049. By RFCRFC 8222822. It is stipulated that the email standard does not allow the use of characters other than the 7-bit ASCII character set in mail m

HTTP Status Management The original HTTP is designed as a stateless request/response-oriented protocol. It does not have special provisions and is stateful and runs through some logically related request/response exchange sessions. As HTTP protocol is becoming increasingly popular and popular, more and more systems that have never intended to use it have begun to use it for applications, such as transmission methods for e-commerce applications. Therefore, it is necessary to support status manag

A long time ago, I took a rough look at Osip, exosip, ortp and quickly "encapsulate" a Windows-based vc6-based mfc sip Soft Phone (all source code vc6 project files and Lib libraries can be found in this blog shared folder ), due to time constraints, I can only analyze the code of Osip, exosip, and other development libraries in a pure "application" manner. As a matter of interest, I can refer to the working principles of the SIP Phone, but as a reference for commercial product development, it i

Specification"[Iec62455] IEC, IEC 62455, "Internet Protocol (IP) and transport stream (TS) based service access"[Rfc1321] IETF, RFC 1321, "the MD5 message-Digest algorithm", limit l 1992.[Rfc2119] IETF, RFC 2119, "Key Words for use in rfcs To Indicate Requirement Levels", March[Rfc2326] IETF, RFC 2326, "Real Time Streaming Protocol (RTSP)", limit l 1998.[Rfc2616

1 Description 2 Concepts of drilling and traversing... 1 3. Drilling and traversing in P2P... 2 4. Features of protocol traversal using stun series... 2 5 relationship between stun/turn/ice protocols... 3 6 STUN Protocol (RFC 5389) 3 6.1 Why stun protocol is used... 3 6.2 how stun works... 4 7 TURN protocol... 4 7.1 why the TURN protocol is used... 4 7.2 how the TURN protocol works... 5 7.2.1 allocate request... 5 7.2.2 relay port message forwarding..

In the use of the Internet, the most basic protocol stack is the TCP/IP protocol stack. The basic protocols are TCP transmission control protocol and IP Internet protocol. Next, we will introduce the concept and basic structure of the two parties, as well as their functions. TCP: Transmission Control Protocol TCP is a connection-oriented) Reliable, byte stream-based Transport layer (Transport layer) communication protocol, defined by RFC 793 of IETF )