openvpn udp

UDP is also one of the basic Internet protocols. Like TCP, It is a protocol in the transport layer. Then we will introduce the specific situation of this agreement in detail from the following article. However, UDP is a non-connection-oriented protocol. TCP is a surface connection protocol ). The establishment of a UDP connection does not require the server to li

Socket programming practices in Linux (10) Basic UDP programming detailsIn my two blogs, I briefly introduced and implemented the server and client programs under UDP (TCP)-based windows (basically consistent procedures in UNIX, this article continues to explore some details about UDP programming.Is a simple UDP client

During UDP programming, the most common question is how many bytes are sent at a time? Of course, there is no unique answer. The answer is different from the requirements of different systems. Here we only analyze the situation of sending chat messages like ICQ, in other cases, you may be able to get some help: First, we know that TCP/IP is generally considered as a layer-4 protocol system, including the link layer, network layer, transport layer, an

Differences Between TCP byte stream and UDP datagram, tcpudp "TCP is a stream-mode protocol and UDP is a datagram-mode protocol". I believe you are familiar with this sentence ~ However, what is the difference between "stream mode" and "data packet mode" in programming? The following is my understanding for your reference only! 1. TCP For example, TCP. You have a reservoir in your house. You can pour water

Tag: Send protocol data in UDP formatBasic introduction to UDP Protocol 1. Basic conceptsUDP is a simple packet-oriented Transport layer protocol: each output of the process produces exactly one UDP datagram and is assembled into an IP datagram to be sent, unlike the stream character protocol, such as TCP, where the entire data generated by the application is not

For a UDP server, if several UDP clients send data to it at the same time, and the UDP server uses a single-thread serial processing method to process received UDP packets, then, when the UPD server has not processed a packet, several other clients send data at the same time, and the data is accumulated together (or ov

The most complete difference between TCP and UDP TCP UDPBasic differences between TCP and UDP1. Connection-based and no-connection2.TCP requires more system resources, less UDP;3.UDP program structure is relatively simple4. Stream mode (TCP) and datagram Mode (UDP);5.TCP guaranteed data correctness,

Socket is a set of interfaces built on the TCP/IP protocol is not a protocolApplication layer: HTTP FTP SMTP WebTransport layer: Provides logical, not physical, communication between two applications (TCP UDP)TCP reliable connection-oriented servicesUDP unreliable, non-connected serviceAs long as the underlying implementation of the TCP IP protocol can be used to communicate with the socket1. TCP and UDP1.1 TCP ConnectionsThe TCP protocol can provide

Network communication In addition to the way the TCP, there is a way to implement the UDP way. UDP (user Datagram Protocol), the Chinese meaning is the Customer datagram protocol, similar to send short message, is a cheap way of communication, use this way without establishing a dedicated virtual connection, because no need to establish a dedicated connection, so the pressure on the server is much smaller t

This article mainly introduces the C #-based UDP protocol synchronous implementation code, small series feel very good, and now share to everyone, but also for everyone to do a reference. Let's take a look at it with a little knitting. I. Summary Summarizes the synchronous communication of the UDP protocol based on C #. Second, the experimental platform Visual Studio 2010 Three, the principle of experiment

1. Brief Introduction to UDP UDP is a transport layer protocol, which is in a layer with TCP protocol. However, unlike TCP, UDP does not provide timeout retransmission, error retransmission, and other functions, that is, it is an unreliable protocol.2. UDP header 2.1.udp por

1.UDP Brief Introduction UDP is a transport layer protocol, and TCP protocol is in a hierarchy, but unlike the TCP protocol, UDP protocol does not provide timeout retransmission, error retransmission and other functions, that is, it is unreliable protocol. 2.UDP Protocol Header 2.1.

one. UDP ProtocolUDP (user Datagram Protocol) protocol is a "Subscriber datagram Protocol", which is a non-connected protocol, and no connection is primarily compared to the TCP protocol. We know that when transmitting data using the TCP protocol, it is first necessary to establish a connection (the so-called handshake) to transmit the data. When the computer uses the UDP protocol for data transmission, the

Compared with TCP, we know that UDP is an unreliable transmission protocol. We still have a lot to do with this Protocol. Because its transmission mode and speed are incomparable to TCP. Let's take a closer look at this agreement. 1. Brief Introduction to UDP UDP is a transport layer protocol, which is in a layer with TCP protocol. However, unlike TCP,

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, the bandwidth of wireless transmission data will continue to increase. with 3G wireless networks, the bandwidth of data transmission will reach 2 Mbps, the wireless transmission solution will gradually

Overview Although the Protocol family is called "TCP/IP", there are many other members in addition to the two main protocols, TCP and IP. Figure 2-1 shows an overview of these protocols. Figure 2-1 shows both IPv4 and IPv6. From the right to the left, the five network applications on the rightmost are using IPV6, And the next six network applications are using IPv4. The network application named tcpdump on the leftmost side can use the BSD grouping filter (BPF) or the data link layer Provi

Finally, I found a satisfactory explanation of UDP punching principle, attached the text, and sorted out the source code. 3.3. UDP hole punching UDP Punching Technology The third technique, and the one of primary interest in this document, is widely known as "UDP hole punching. "UD