We always talk about network ...... There are actually many types of networks, such as wired networks, wireless networks, wide area networks, and local area networks. However, with the continuous technological innovation, our network boundaries are gradually blurred. Just as we always cover many Protocol sets by the TCP transmission control protocol and the IP network protocol, we do not want to correct this statement, but need to clarify their specif
For real-time transmission (here, real-time transmission mainly refers to interactive video and audio, such as video conferencing and Im video and audio conversations), data volume has the following two features:
1.Data is generated in real time and sent in real time. If the data cannot be sent within a given period of time, the data will be discarded.
2.Generally, data traffic transmitted per unit of ti
RTP/RTCP/RTSP/SIP/SDP relationship1. RTPReal-time Transport Protocol is a Transport layer protocol for multimedia traffic on the Internet. The RTP protocol details the standard packet format for transmitting audio and video over the Internet. RTP protocols are commonly used in streaming media systems (with the RTCP protocol), video conferencing and a Push-to-talk system (with either a/p or SIP), making it the technical foundation of the IP telephony industry. The RTP Protocol and RTP Control pro
[Streaming media] Android real-time video collection/encoding/transmission/decoding/playback-Solution Research (initial)
Skyseraph Mar 23rd 2012
Email: zgzhaobo@gmail.com QQ: 452728574
Real-Time Video Stream collection
Solution 1: Set setpreviewcallback in Android camera shooting preview to implement the onpreviewframe interface to capture video stream data of each frame in real time
Solution 2: Use mediarecorder of Android to
of using protobuf in Network Programming
Google Protocol Buffers (Protobuf) is a very good library that defines a compact and scalable binary message format, which is especially suitable for network data transmission. It provides binding for multiple languages, greatly facilitating the development of distributed programs, so that the system is no longer limited to writing in a certain language.
To use protobuf in network programming, you need to solv
transmission media, and electrical equality are different. The following describes the most commonly used Ethernet NIC.
Ethernet adopts CSMA/CD (carrier-based multi-channel access/conflict detection) control technology. He mainly defines how the physical layer and data link layer work. The data link layer and the physical layer implement their own functions, so they do not care about how the other party operates. There are standard interfaces (such a
introducing the transmission security of WCF, let's first introduce these security risks.
1. Transmission security risks in distributed applications
We can regard it as a message processing framework. The entire framework is divided into two parts: client and server. The client is responsible for sending the request message and receiving the reply message, while the server is responsible for receiving the
the same priority. The priority and security parameters used by TCP are defined in the IP protocol. The security/interval mentioned here refers to the priority defined in the IP address, user group and handling rules. If not, RST is sent. Please refer to the description in the previous section. TCP also checks the priority of the received data segment during the operation, and can also increase the priority in the operation. Although running in a secure environment, the host must be able to pro
1. Physical LayerPhysicallayer: Transmission of the original bit stream (BIT)
(1) provide physical channels for data transmission
(2) Data Transmission
Main devices: relay, Hub
2. Data Link LayerDatalinklayer: Establish data link transmission (frame) for adjacent nodes)
(1) establish, maintain, remove, specify the topo
In the past, the author has analyzed many methods which can reduce the delay of HTTPS transmission, such as the reuse of distributed Session;With HSTS enabled, the client opens HTTPS jump by default, adopts HTTP/2 transport protocol, and uses chacha20-poly1305 algorithm to reduce the CPU time of the mobile terminal.These methods can greatly optimize the delay of HTTPS in transmission, and bring a better exp
Solution:
HDD Protection 7. After the X version, the network has only one intelligent biography with the cross, no previous 6. The increment of the same function in X. This is not to say does not support the increment of the same biography, but only unified to the intelligent same transmission, that is, the software automatically determines whether the current system and the previous system has a difference between, if there is, then the increment of
Data Guard offers two main services:1 Redo Transport Service: The Primay end of the redo log transmission to one or more standby destinations.2 Redo Application Service: The redo log which is transmitted from the Primay end is applied to the standby end.This article first discusses the redo transport services.
1, the use of ARCN transmission redo logBy default, the ARCN transport redo log, but only in the
the client, which is inefficient. Another approach is to write the response to disk and then use Flask.send_file () to return the file, but this adds a combination of I/O. Assuming that the data can be generated in chunks, providing a response to the request in small chunks of data is a better solution.Real-time data. For some applications, you need to request the returned data from a live data source. A good example of this is the provision of a live video or audio. Many security cameras use t
Implementation of real-time transmission based on Jrtplib library under LinuxRTP is a standard protocol and key technology for real-time streaming media transmission.Real-time transport protocol (real-time transport PROTOCOL,PRT) is a network protocol for processing multimedia data streams on the Internet, which can be used in one-to-one (unicast, unicast) or one-to-many (multicast, multicast), the real-time trans
During the differential transmission of twisted pair wires, for external interference signals, the two twisted pair wires are equivalent to the Same conductor, and the interference signals have the same amplitude and polarity on the two wires. At the input end of the differential amplifier, if the CMR value of the two-wire common mode input is large enough to receive the difference amplifier, it can be well restrained.
Generally, the characteristic im
We know that SPI data transfer can be in two ways: synchronous and asynchronous. The so-called synchronization means that the initiator of the data transmission must wait for the end of this transmission, can not do other things, in code to explain that, after the transfer function is called, until the data transfer completes, the function will return. The asynchronous approach is the opposite, the initiato
With the development of technology, the product needs to improve the data transmission speed. The data transmission mode of the IDE interface hard disk has undergone three different technological changes, from the initial Pio mode, to the DMA mode, and then to the ultra DMA mode.
Pio ModeThe English spelling of PIO is "programming input/output model". Pio mode is a data exchange mode that reads and writes d
Sometimes in the backup or synchronization with a large number of files (such as a few GB or dozens of GB of database directory, log directory), the direct SCP takes longer, although the first compression and re-transmission can be decompressed, the amount of data transmitted is really reduced, but compression and decompression will also take a lot of time , the overall effect is not satisfactory, yesterday night whim, due to previous experience in st
USB drive Slow transmission speed is very delayed, then there is no way to speed up the transmission of the U disk? Of course, today to share with you on the WIN10 system, to improve the transmission speed of the USB stick a little trick.method of improving transmission speed of USB flash drive under WIN10 system1. Rig
This article describes in detail the transmission speed problems in LAN faults, provides possible analysis of some faults, and provides troubleshooting methods, the following article gives you a detailed answer.
A just-built small LAN, a server, and more than a dozen workstations, using a switch as the access device, the connection line is 6 types of lines. The main failure is that the transmission speed o
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.