337 results about "User Datagram Protocol" patented technology

A fabric control protocol is described for use within a data center in which a switch fabric provides full mesh interconnectivity such that any of the servers may communicate packet data for a given packet flow to any other of the servers using any of a number of parallel data paths within the data center switch fabric. The fabric control protocol enables spraying of individual packets for a given packet flow across some or all of the multiple parallel data paths in the data center switch fabric and, optionally, reordering of the packets for delivery to the destination. The fabric control protocol may provide end-to-end bandwidth scaling and flow fairness within a single tunnel based on endpoint-controlled requests and grants for flows. In some examples, the fabric control protocol packet structure is carried over an underlying protocol, such as the User Datagram Protocol (UDP).

Apparatus for data communication includes a network interface for connection to a packet data network and a host interface for connection to a host computer, which includes a central processing unit (CPU) and a host memory. Packet processing circuitry receives, via the host interface, from a kernel running on the CPU, associations between multiple remote direct memory access (RDMA) sessions and multiple different User Datagram Protocol (UDP) 5-tuple, which are assigned respectively to the RDMA sessions, and receives from an application running on the CPU a request to send an RDMA message, using a selected group of one or more of the RDMA sessions, to a peer application over the packet data network, and in response to the request, transmits, via the network interface, one or more data packets using a UDP 5-tuple that is assigned to one of the RDMA sessions in the selected group.

The invention relates to the technical field of digital relays, and discloses a digital relay telephone traffic real-time acquisition and intelligent distribution system for emergency scheduling, which executes the following steps through five modules: receiving and normalizing UDP (User Datagram Protocol) data through a time domain buffer management module, completing space-time matching of telephone traffic and media streams through a cross-protocol association engine, and completing real-time transmission of the telephone traffic and the media streams. And unsuccessful data triggers a reverse tracing service for remedy, the intelligent scheduling controller performs grading processing according to the emergency degree and dynamically deploys resources, and finally the data is intelligently distributed to a message queue cluster through an elastic load balancing module. By constructing a multi-level heterogeneous data processing framework and dynamic redundancy transmission, intelligent space-time alignment and elastic resource scheduling mechanisms, accurate routing of first-aid instructions and zero-loss guarantee of key data are achieved, meanwhile, the self-adaptive fault-tolerant capability of the system to abnormal working conditions such as equipment clock skew and burst flow is enhanced, and the system reliability is improved. And high-availability technical support is provided for digital upgrading of emergency dispatching.

The invention relates to the technical field of audio processing, and discloses a multi-room multi-channel audio synchronization method, device and equipment and a storage medium, and the method comprises the steps: determining an audio signal to be played in main audio equipment, and carrying out the coding of the audio signal according to a channel through employing a preset low-delay audio coding strategy, and obtaining audio coding data; based on a user datagram protocol and an NACK retransmission mechanism, optimizing the audio coding data to obtain an audio coding sequence data packet; and controlling the audio coding sequence data packet to be synchronously played in the at least one slave audio device by using a preset room synchronization control strategy and a sound channel synchronization control strategy. In the invention, the audio signal is coded through the low-delay LC3 coding, so that the transmission delay is reduced to the greatest extent, and the coded audio signal is transmitted by using the UDP protocol and the NACK retransmission mechanism, so that the network bandwidth occupation is reduced, and the additional delay caused by transmission or retransmission is avoided.

The invention discloses a video stream non-perception encryption and decryption method based on an IP (Internet Protocol). The method comprises the following steps: acquiring a plaintext data stream, splitting the plaintext data stream into data packets, transmitting the data packets by using a UDP (User Datagram Protocol), introducing a forward error correction code, recombining the transmitted data packets, and generating an original plaintext video stream; carrying out network flow feature extraction on the plaintext data flow to obtain network flow features, carrying out load optimization to obtain a first network flow feature, carrying out encryption by using an encryption algorithm, and attaching an authentication tag to the end of the encrypted first network flow feature to obtain a second authentication tag; embedding the encrypted first network traffic feature into a data packet of the original plaintext video stream to obtain an encrypted data packet; the authentication tag is recalculated and compared with the second authentication tag, and the encrypted data packet is decrypted by using the corresponding key to obtain the original plaintext video stream after recombination, so that network attack can be effectively prevented, and the security of video transmission is guaranteed.

A multi-room multi-channel audio synchronization method, apparatus, and device and a storage medium are provided. In this method, an audio signal to be played in a primary audio device is determined, the audio signal is encoded according to channels by using a preset low-latency audio encoding strategy and audio encoding data is obtained. Next, the audio encoding data is optimized based on a User Datagram Protocol and a Negative Acknowledgment NACK retransmission mechanism to obtain audio coded sequence data packets. The audio encoding sequence data packets are controlled to be synchronously played in at least one secondary audio device by using a preset room synchronization control strategy and a channel synchronization control strategy.

The invention provides a PCIe (Peripheral Component Interconnect Express)-Ethernet high-speed data transmission system based on an FPGA (Field Programmable Gate Array), which belongs to the field of communication of digital circuits and comprises a PCIe interface module, a gigabit Ethernet interface module, a DDR3 (Double Data Rate 3) cache module and an AXI (Advanced eXtensible Interface) bus control module. The high-speed data transmission capability of the PCIe interface and the flexible port expansion capability of the gigabit Ethernet interface are integrated, and a user datagram protocol (UDP)-based control logic is constructed to realize data interaction between the PCIe and the gigabit Ethernet, so that high-speed and reliable data transmission is realized; and the high requirements of a high-speed signal acquisition and playback system and the like on the data transmission rate and reliability are met.

The invention discloses a detection method for ROS2 communication security vulnerabilities. The method comprises the following steps of: obtaining all UDP (User Datagram Protocol) ports needing to be scanned according to a DDS Discovery protocol, then scanning the UDP ports in a target local area network, and obtaining a communication domain ID (Identity) where an ROS2 application program is located; performing ROS2 basic information scanning on the communication domain according to the obtained communication domain ID to obtain basic information of ROS2 application program communication; step 2, according to the basic information obtained in the step 2, performing vulnerability detection on all scanned topics, services and actions, analyzing the security of the topics, services and actions, and generating a detection report; and combining the obtained safety detection reports of the topics and / or the services and / or the actions to generate a complete safety report of the ROS2. The invention also discloses a detection system for realizing the detection method, and application of the detection method or the detection system in the aspect of ROS2 communication security vulnerability detection.

The invention discloses a communication method and device based on a container cluster, equipment and a storage medium. The method is applied to a working node in a container cluster, and comprises the following steps: creating and starting a first endpoint device for VXLAN communication based on user datagram protocol port information, a network identifier of a virtual extensible local area network (VXLAN) and a node address of the working node; creating a network resource of the working node in the main node of the container cluster based on the container group unit adaptive network segment of the working node, the device address of the first endpoint device, the physical address of the first endpoint device and the node address of the working node; detecting a network resource creation event of a cluster external node in combination with the main node, and determining a network resource of the cluster external node; and according to the network resource of the cluster external node, establishing a VXLAN tunnel for communication between the first endpoint device and a second endpoint device in the cluster external node, so that the cluster external node accesses the container group unit through the VXLAN tunnel. And the cost of accessing the cluster inner container group unit by the cluster outer node is reduced.

The invention discloses a multi-device collaborative passenger flow statistical method and system, and the method comprises the following steps: presetting a unique identity label and a physical position index for devices, reading the unique identity label and the physical position index, and initializing the attribute information of the devices; a user datagram protocol broadcasting mechanism is started, and heartbeat information including the unique identity label, the physical position index and the online state is sent according to a preset period; monitoring the user datagram protocol broadcast message in the local area network, constructing and maintaining an online equipment list, and updating the online state of the equipment according to the heartbeat information receiving analysis condition; judging adjacent equipment based on a physical location index, and deciding whether to start a first boundary or a second boundary according to the online state of the adjacent equipment; and the decision result is transmitted to a passenger flow statistical algorithm to generate a shop-crossing detection line. According to the invention, multi-device collaborative passenger flow statistics dynamic boundary configuration is realized, the shop-crossing detection line is accurately generated, and the passenger flow statistics problems of fixed boundary configuration, easy missed counting and poor multi-device collaboration are solved.

The invention discloses a UDP-based large file one-way gatekeeper passing method, and relates to the technical field of data processing. The problems of high packet loss rate, low bandwidth utilization rate and insufficient verification efficiency in large file transmission in a one-way non-feedback gatekeeper environment are solved. The method comprises the following steps: segmenting a file into small fragments based on configuration, generating metadata with verification, and compressing the metadata; a fragment transmission sequence is dynamically scheduled through a priority queue, a uniform retransmission strategy is adopted to guarantee reliability, and overtime tasks are automatically cleared; a metadata verification and deduplication mechanism is utilized to ensure that the fragments are complete and unique, and redundant storage is avoided; and recombining the fragments into a complete file according to a metadata sequence, updating a database state to be'received ', and synchronously cleaning temporary fragments and redundant logs. The method has a good application prospect in the fields of distributed storage, cloud computing, CDN (Content Delivery Network), big data transmission and the like.

The invention discloses a radio astronomical real-time data stream processing method and system based on a distributed acquisition component, and the method comprises the steps: S1, data transmission: a server receives a user datagram protocol UDP data packet transmitted by a radio astronomical telescope through a network card, and carries out the data transmission through an open-source pulsar distributed acquisition component and a data analysis system PSRDADA; creating and managing annular buffers, and transmitting data streams among the annular buffers; s2, data processing: using a CUDA (Unified Computing Device Architecture) parallel computing platform and a programming model of a GPU (Graphics Processing Unit) to write a computing and unpacking program so as to realize parallel processing and data extraction of large-scale data; and S3, writing data into a disk, writing the data blocks into the disk by using a data storage client of the PSRDADA, and dividing the data into files with any length. According to the invention, high-speed radio data streams can be received efficiently and stably, real-time processing of data is realized, and a reliable solution is provided for high-bandwidth signal transmission and processing in radio astronomical observation.

The invention discloses a UDP (User Datagram Protocol) socket buffer area self-adaptive adjustment method and system and a medium. The method comprises the following steps: setting an initial UDP socket buffer area size, a buffer area size adjustment rule and a packet loss rate threshold value before network transmission; when network transmission is carried out, the packet loss rate is sampled regularly, the average value of the packet loss rate of each evaluation window period is calculated, and the average value of the packet loss rate of each evaluation window period is compared with a packet loss rate threshold value. And matching the comparison result with a buffer area size adjustment rule, and dynamically adjusting the size of the UDP socket buffer area according to the matching result corresponding to each evaluation window period in sequence so as to give consideration to low packet loss rate and high memory resource utilization rate. The invention aims to solve the problems that the existing UDP-based data transmission method cannot change the size of the UDP socket buffer area according to the real-time change of the network environment and the packet loss rate, so that the system resource memory waste and the transmission performance reduction are easily caused, and the system memory resource utilization rate and the network transmission stability can be improved.

Examples described herein relate to an interface and circuitry. The circuitry can perform offloaded performance of a cryptographic handshake with a client in connection with initiation of a quick User Datagram Protocol Internet Connections (QUIC) connection with the client. In some examples, the cryptographic handshake comprises process a first client hello datagram from the client, the first client hello datagram is consistent with QUIC, and the offloaded performance of the cryptographic handshake with the client is offloaded from a processor to the circuitry.

Provided are a communication method and a communication device, the method comprising: a session management network element receiving first information, the first information comprising information of an application, or a data network name and / or single network slice selection auxiliary information, the data network name and / or single network slice selection auxiliary information corresponding to a data connection session, data of the application or the data connection session is transmitted through a media transmission protocol MoQ based on a fast user datagram protocol; the session management network element acquires information of at least one MoQ relay according to the first information, the information of the at least one MoQ relay being used for establishing a connection between a user equipment and a first MoQ relay of the MoQ relay; and the session management network element sends second information, wherein the second information comprises information of the at least one MoQ relay sent to the user equipment. Through the method, the user equipment can obtain the information of the MoQ relay to establish the connection, so that data is transmitted based on the connection.

A method and system for detecting a denial of service (DOS) attack when packets used in the DOS attack are user datagram protocol (UDP) packets, are disclosed. The method includes obtaining values from an application header of a UDP packet; and when, based on use of at least one modified probabilistic Bloom filter (PMBF) for a destination to which the UDP packet indicates that it is destined, the obtained values are not values expected to be found in a UDP packet destined for the destination: increasing an uncommon per sample (ups) estimate for the PMBF; and when the increased uncommon per sample estimate is greater than an upper ups threshold: setting an alarm state to on; suspending update of the PMBF counters; and initiating a mitigation action at least with respect to the UDP packet.

The invention provides a QT-based module plug-in communication system and a QT-based module plug-in communication method. The QT-based module plug-in communication system comprises a UDP (User Datagram Protocol) communication module for providing a message communication function based on a network card for software; the model data processing module is used for providing full-life-cycle model data for the software; the plug-in management module can load different types of plug-ins; and the plug-in module is used for coding implementation by a user according to the service and generating a plug-in. The invention provides a QT-based module plug-in communication method, which is used for solving the problems of complicated coding, difficulty in collaborative development and low code reusability.

The invention relates to the technical field of computer network communication and signal processing, and particularly discloses a low-delay signal real-time processing and visualization method based on a UDP (User Datagram Protocol), which comprises the following steps: S1, initializing a data receiving module, and receiving and processing data; s2, signal processing and spectrum analysis; s3, updating the oscillogram in real time and displaying a time domain signal; s4, drawing a spectrogram through the spectrum data; s5, updating the waterfall plot in real time; s6, controlling the periodicity of data acquisition and graph updating by adopting a timer; and S7, storing the image and the collected data. The invention further provides a low-delay signal real-time processing and visualization system based on the UDP. The system comprises a data receiving module, a signal processing module, a waveform display module, a spectrum analysis module, a waterfall plot module and a storage module. According to the scheme, the problems of high delay, slow display updating, complex data processing and the like in the prior art can be solved, and efficient data processing and stable graph updating are realized.

The invention discloses an edge cloud cluster dynamic conversion and service sharing method, system and device. The method comprises the following steps: determining a network quality index between nodes in an edge cloud cluster; under the condition that the number of the first nodes in the edge cloud cluster is greater than a first preset number, converting the edge cloud cluster into a master-free cluster; under the condition that the edge cloud cluster is a main-free cluster, each node shares the application service and the resource utilization rate of the own node with adjacent nodes in a preset range in a mode of broadcasting a user datagram protocol data packet; and under the condition that the edge cloud cluster is a master-free cluster, if any node detects that the network quality index between the node and other nodes with a preset number is greater than a preset threshold value, electing a master node from the nodes. According to the invention, the technical problems that the edge cloud cluster depends on the central cloud and the service between the nodes is unreliable in a high-mobility environment and a network limited condition are solved.

The invention relates to an IPSEC (Internet Protocol Security) key exchange method resistant to quantum computing. According to the invention, based on a lattice cryptographic algorithm and improved SM4-256 symmetric encryption, secure communication between a master mode and a fast mode is realized; in the main mode, an initiator sends an IKE first message through a UDP (User Datagram Protocol), negotiates SA parameters with a responder and exchanges a lattice password certificate; the two parties encapsulate a temporary 32-byte secret key by using the public key of the opposite party, generate a 512-bit random number through SM4-256 encryption, and sign and transmit the 512-bit random number to realize secure random number exchange and certificate verification; and the two parties calculate a first session key based on a PRF (Pseudo Random Function), and encrypt an exchange data HASH value to complete main mode key consistency confirmation. And after entering the fast mode, taking the main mode session key as an SM4-256 symmetric key to continue communication, sending an SA message carrying a 512-bit random number by the two parties, calculating to obtain a second session key, and establishing an ESP tunnel. According to the method, the security of IPSEC under the threat of quantum computing is improved through the lattice password.

Two electronic devices attempt to communicate and exchange Internet Protocol (IP) packets over a cellular communication network, and at least one of the two devices is behind a symmetric Network Address Translation (NAT) service. At least one of the two devices executes a Session Traversal Utilities for NAT (STUN) protocol, which provides to that device a pair of external IP address and port of that device; which that device then informs to a Message Broker Unit that is accessible to both devices via the public Internet. The Message Broker Unit provides the external IP address and port of that device, to the other device; which then connects to a Virtual Private Network (VPN) server and sends to the first device one or more User Datagram Protocol (UDP) packets that penetrate or puncture the NAT service in an application-agnostic manner.

The invention belongs to the field of data transmission, and discloses a data transmission method and device for a user datagram protocol and a storage medium, and the method comprises the steps: firstly generating a target serial number through a receiving end, searching a corresponding target data packet in a receiving buffer queue, and guaranteeing that the data packets are processed according to a correct sequence; in a complex network environment, data packets may arrive at a receiving end in an out-of-order manner due to various reasons, so that the problem can be effectively solved, the data processing sequence is ensured, and the accuracy and integrity of data are improved. And the receiving end only needs to pay attention to the target data packet which needs to be processed currently, so that unnecessary processing time and resource consumption are reduced. By accurately finding and processing the target data packet, error processing of repeated data packets or data packets which do not need to be processed is avoided, and the efficiency and accuracy of data processing are further improved.

The embodiment of the invention discloses a session keeping method and device, equipment, a medium and a product, and the method comprises the steps: determining a first container instance which builds transmission control connection with a client and first socket information of the first container instance, building the first socket information and second socket information of a cloud container cluster, the mapping relation between the first socket information and the second socket information and the third socket information of the public network corresponding to the second socket information; sending the third socket information to the client; and forwarding the user datagram protocol data packet sent by the client to the first container instance through the second container instance according to the mapping relationship. According to the technical scheme provided by the embodiment of the invention, the problem that cloud container session maintenance cannot be realized at present is solved, the UDP data packets of the client can be uniformly forwarded to the first container instance through the container instance for forwarding according to the socket mapping relationship by mapping the socket of the cloud container cluster to the socket of the first container instance, and the user experience is improved. Therefore, multi-protocol sessions can be maintained together.

The invention belongs to the field of distributed control systems, and provides a DCS controller credible alarm uploading method, system and device and a storage medium, and the method comprises the steps: S1, a credible proxy service module monitors and obtains alarm information generated by a credible module in a DCS controller in real time; s2, the trusted proxy service module analyzes the alarm information and generates an alarm information message; s3, the trusted proxy service module sends the alarm information message to DCS system control software; the DCS system control software runs in an operating system of the DCS controller; s4, the DCS system control software receives the alarm information message and sends the alarm information message to a trusted management center by using a communication link; wherein the communication link is an encrypted communication link based on a UDP (User Datagram Protocol) and depending on a TPM (Trusted Platform Module). According to the invention, the alarm information can be sent timely, efficiently and safely, and the reliability and safety of the DCS system are improved.

The invention discloses a remote intelligent control system for multimedia equipment and an implementation method thereof, and belongs to the technical field of network communication, and the implementation method comprises the following steps: acquiring network environment information of the multimedia equipment, judging an NAT (Network Address Translation) type, and generating a mixed penetration protocol selection rule to determine an initial penetration protocol; the method comprises the following steps: acquiring port allocation characteristics of NAT equipment based on an initial penetration protocol, generating port prediction parameters through linear increment prediction and LSTM neural network training, and formulating a port prediction and keep-alive strategy; executing UDP (User Datagram Protocol) penetration according to a keep-alive strategy, starting a TCP (Transmission Control Protocol) standby mechanism when the UDP penetration fails, and generating a penetration scheme by combining HTTP tunnel encapsulation and firewall inbound rule configuration; equipment identification information collection, signaling interaction, penetration attempt and connection establishment are completed based on a penetration scheme, successful feedback is generated after verification is passed, and remote control is realized; according to the invention, the stability and efficiency of remote connection of the multimedia equipment in a complex network environment are improved.

The invention discloses a software-in-the-loop simulation test system and method for intelligent driving, and relates to the technical field of automatic driving algorithm testing. According to the scheme, a closed-loop test of an in-the-loop simulation test is realized only through an intelligent driving platform, a scene simulation software end and an initialized vehicle dynamics model group; all the components realize distributed communication through a user datagram protocol without additional hardware, so that complicated external communication configuration is not needed in a closed-loop test for realizing in-loop simulation test, multi-tool collaboration is simplified, and the complexity of a system structure is reduced. And the intelligent driving platform coordinates vehicle dynamics data according to a preset algorithm to carry out path planning and decision control, so that the interaction efficiency of software in a loop simulation test process is improved. And the vehicle dynamics model group is used for sending the RDB data packet to the scene simulation software end through the public user datagram protocol channel, that is, cross-component collaboration is realized through the public user datagram protocol channel, and the synchronism of closed-loop testing is ensured.

The invention discloses a data transmission method, which comprises the following steps: in response to file fragment data received from a server of a data transmission component, generating first verification information of the file fragment data based on the file fragment data, and generating a fragment verification transaction request; the file fragment data is obtained by performing fragment processing on target file data through a server side of the data transmission component; calling a data verification contract based on the fragment verification transaction request through a block chain node in the block chain network, and determining a data verification result of the file fragment data based on the first verification information and the second verification information; the second verification information is generated by the server side of the data transmission component based on the file fragment data; determining a file transmission state of the target file data based on the data verification result; and data transmission is carried out between the client and the server of the data transmission component by adopting a user datagram protocol. According to the invention, the reliability and security of data transmission are ensured while low-delay data transmission is realized.

The invention discloses a transmission method in an integrated NR base station communication system with a sunk core network, which comprises the following steps of: newly adding a dynamic library to reload a socket API (Application Program Interface) which comprises a socket interface, a bind interface, a sendto interface, a recvfrom interface and a close interface, loading the library through an LDPRELOAD environment variable, starting an NGC (Network Gateway Converter) and an NR process, and replacing all UDP (User Datagram Protocol) socket API. The method comprises the following steps of: constructing a stockkokinit function, realizing interface reloading through a dlsym function, and initializing a shared memory annular queue, a lock and the like. Socket, bind, sendto and recvfrom interfaces are realized, socket descriptors of GTPU communication are specially processed, and accelerated data transmission is realized by using FIFO, a shared memory annular queue and a timer. According to the embodiment, by configuring the LDPRELOAD environment variables, NGC and NR codes do not need to be changed, and automatic replacement is achieved. On integrated equipment with resource shortage, an NGC (Next Generation Core Network) and an NR (New Radio Communication Technology) base station realize data plane transmission through a GTPU protocol and UDP (User Datagram Protocol) communication, and the problems of high bandwidth demand and resource occupation are faced. The problems of performance, resource occupation and code invasiveness existing in an existing transmission scheme are solved.

The invention discloses a log storage and transmission processing method and system, electronic equipment and a medium, and the method comprises the steps: obtaining an access parameter and a link log requested by a user at a client, and obtaining to-be-stored log information; performing serialization and first compression processing on the to-be-stored log information to obtain first log information; sending the first log information to a service cluster through a user datagram protocol or a hypertext transfer protocol according to the message size of the first log information and the number of servers in the service cluster; in the service cluster, writing the first log information into a double-buffer queue, and transmitting the first log information to a storage cluster in a multi-thread aggregation mode; and in the storage cluster, performing second compression processing on the first log information, and storing the first log information in a database of the storage cluster. The log storage and transmission efficiency and the application performance are improved, read-write operation does not need to be conducted on a disk in the log transmission process, resources of a server are saved, the technical cost is reduced, and the method can be widely applied to the technical field of computers.

The invention provides a vehicle central domain controller software upgrading method and system based on a flash diagnostic instrument. The method comprises the following steps that the flash diagnostic instrument is connected to a Switch through an Ethernet ETH network cable; establishing UDP (User Datagram Protocol) connection with the MPU; initiating an identity verification request to the MPU; verifying whether the identity of the flash diagnostic instrument is legal; initiating a file transmission request to the MPU, and sending the controller flash program compressed file to the MPU; receiving and storing the compressed file; sending the file verification value; the MPU receives the file verification value and calculates the file verification value; the MPU compares whether the verification values of the two files are consistent or not; initiating an installation request to the MPU; the MPU decompresses the compressed file and analyzes the file content; judging whether the decompressed file content is legal or not; the MPU downloads the MCU flash program file to the Nor Flash, downloads the communication SoC flash program file to the internal memory of the communication SoC, writes the MPU flash program file to the eMMC, and respectively performs flash updating; sending an installation result to the flashing diagnostic apparatus; and the flash diagnostic instrument resets the central domain controller.