shadowsocks udp

is about 40 kbps, and is limited by bandwidth, it is best to use the data collection scheme, such as proactive alarms, data Round-Robin collection, and active call-back for alarms, which consume less bandwidth. In addition, considering the support for the real-time data collection solution of the front-end server, the wireless modem transmission solution can only be used as a supplement to the current transmission solution.With the continuous development of wireless communication technology, th

UDP is at the top layer of the IP protocol, which should be clear to everyone. Therefore, the complex protocol structure of the network constructs all aspects of the network. Today we will introduce the basic content of the UDP protocol. The UDP Protocol is short for the User data Protocol. It is mainly used to support network applications that need to transmit d

-65535, generally we use a certain software, such as QQ, and other services, randomly take this range of ports, rather than to get the front of which fixed, get the communication end, will release the port.Know what the port is? What did the transport layer specifically do? Transport layer is to connect two ports to communicate media, otherwise the light knows what two ports are used, how to communicate, or to rely on transport layer to do this thing, which is important is to rely on two protoco

One. What are the main functions of the transport layer?Split and reassemble the data streams provided by the upper layer to provide end-to-end transport services for the data flow.two. How does the transport layer differentiate the data flow of different applications? Because, for the transport layer, it only needs to know which service program on the target host responds to the program, without needing to know what the service program is doing. Therefore, we only need to be able to represent t

TCP and UDP differences Tcp Udp Whether to connect Connection oriented For non-connected Transmission Reliability Reliable, Not reliable. Application situations Transfer large amounts of data Small amount of data Speed Slow Fast The OSI and TCP/IP models define two transp

accomplishes different functions.The TCP/IP reference model is divided into 5 tiers:application layer, Transport layer, network layer, data link layer and physical layerOnly the same layer of hardware or software at the time of communication can identify data to each other, that is, the application layer only talks to the application layer, does not occur on one side is the application layer and the other is the transport layer of the conversation.In the TCP/IP reference Model, theIP address is

This paper illustrates the data transmission UDP implementation method of Python network programming. Share to everyone for your reference. The specific analysis is as follows: First, the question: Do you think that tools like msn,qq on the Web transmit data mysteriously between machines? You want to play a little bit, too? Do you pass data between the two machines? Today let Python tell us the basic principles, of course, just to do simple understa

It is similar to writing a server-side program code under the TCP protocol, but because it is a non-connected form, there is no need to listen.This time, I used a little different idea: I set up a server, with two ports and two sockets, the server as a data forwarding station, so that the client to the UDP protocol communication.Service-Side code:/** * UDP/IP Server-side SERVER.C */#include But there will b

Communicate using a non-connected datagram (UDP)What is datagram?The datagram is an independent packet transmitted on the Internet, whether the datagram can reach the destination correctly, the time of arrival, the order and the correctness of the content are not guaranteed.Datagram and datagrampacket classes are used in Java.The Datagramsocket class uses the UDP protocol to implement a client-server socket

, required operation not performed 553 The mailbox name is not available and the requested operation is not performed 354 start the message input to "." End 554 operation failed Several basic features of UDP protocol (1) UDP is a connectionless protocol to transmit data before the source and terminal do not establish a connection, when it wants to transfer simply to crawl data from the application, and as q

In many cases, the protocol used to send strings on the network is UDP. Here, we use the official UDP library of boost to encapsulate it, and an object is used for sending. Very convenient. The Code is as follows: StringQueue encapsulation. The mutex Lock is added and implemented with simple variable Lock, which is easy to understand. The queue object of the String contains operations such as queuing, self

One. Socket APIThe previous article "--socket Programming based on TCP protocol" http://2627lounuo.blog.51cto.com/10696599/1775559 has spent a lot of time talking about sockets and using basic sockets API needs to be aware of the problem, here will not repeat it. The following is mainly about UDP and TCP in the socket programming differences;1. Create sockand TCP connection-oriented reliable byte stream service is different,

One, the difference between TCP protocol and UDP protocol1.TCP with connection, UDP no connectionTCP is linked, and there is a link that means that before the actual data is transferred, the client and server side of TCP must have three handshakes before the connection is created, and the connection ends after the session ends. And UDP is a non-linkedThe 2.TCP pr

Http://www.cppblog.com/API/archive/2012/08/24/188130.html Principles and implementation of P2P UDP Nat penetration (with source code)Original: shootingstarsReference: http://midcom-p2p.sourceforge.net/draft-ford-midcom-p2p-01.txt There are often discussions on P2P principles on the Forum, but the discussion is based on the discussion, and there are very few substantive issues (source code ). Haha, here I will use a source code implemented by myself to

1. The figure below shows a UDP test and all the information required, including three parts: 1. UDP pseudo Header 2. UDP Header 3. UDP data part (do not omit this part; otherwise ~ Vomiting Blood ~) First, explain the concept of the pseudo-header. the pseudo-header contains some IP header fields. The purpose is to a

that have been received successfully, and the sending entity does not receive the acknowledgement within the delay of the reasonable return, then the packet is assumed to be lost and will be re-transmitted.3. Error CheckingTCP uses a checksum function to verify the data for errors, and to calculate checksums when sending and receiving4. Flow control and congestion managementFlow control is used to prevent the host from sending too fast and the receiver is too late to accept it completely.Second

This morning gives you a brief introduction of TCP network communication knowledge, now for everyone to complement the knowledge of complete network programming, about UDP communication knowledge.UDP is an unreliable network protocol, so what is the use value or necessity? In some cases, the UDP protocol may become very useful. Because UDP has the speed advantage

sockets, TCP/UDP, HTTP, FTP(a) A brief analysis of TCP/UDP,SOCKET,HTTP,FTP TCP/IP is a protocol group that can be divided into three tiers: the network layer, the transport layer, and the application layer:Network layer: IP protocol, ICMP protocol, ARP protocol, RARP protocol and BOOTP protocolTransport layer: TCP protocol and UDP protocolApplicatio

TCP, UDP packet Size determination UDP and TCP protocols enable multiple applications to send and receive data simultaneously using the port number. The data is sent through the source port and is received through the destination port. Some network applications use only reserved or registered static ports, while others can use dynamic ports that are not registered. Because the

Summary of IP,UDP,TCP,SCTP finishing 1. protocol stack: Application Layer DNS, HTTP, FTP, TELNET, SSH, SIP, H.248/mgaco, diameter, MGCP, M3ua,m2ua,m2pa,sua ... Transport Layer Udp Tcp Sctp Network layer IP (ARP/RARP) Data Link Layer Network device drivers 2. IP layer Features: No connection, unreliable, disorderly; · Mainly