396 results about "Transmission Control Protocol" patented technology

A method for performing an application migration operation includes initiating the application migration operation to migrate an application from a source device to a target device, where the source device includes a source data migration agent and the target device comprises a target data migration agent. The method also includes initiating an active scan of network traffic at a transmission control protocol layer. The method further includes establishing a secure data path between the source device and the target device. In addition, the method includes beginning migration of the application from the source device to the target device using the secure data path. Moreover, the method includes making a first determination, using the active scan, that a data packet is associated with suspicious activity and rejecting the data packet based on the first determination.

The invention discloses a millimeter wave radar meteorological target detection method based on deep learning, and relates to the technical field of meteorological radar processing. The method comprises the following steps: acquiring a millimeter wave radar original signal by using a transmission control protocol for preprocessing; the distance and the angle between an object and an antenna are measured through a millimeter wave radar, so that three-dimensional space coordinates of the measured object are obtained; converting the three-dimensional space coordinates through time alignment and a space coordinate system, and projecting the three-dimensional space coordinates into a visual coordinate system; pre-training a feature extractor, analyzing a data label by using ECMWF, and then performing end-to-end fine tuning; and automatically optimizing the detection threshold according to the signal-to-noise ratio, and outputting target meteorological classification, meteorological intensity and meteorological motion prediction. According to the method, the detection threshold is automatically optimized according to the signal-to-noise ratio, target classification, intensity estimation and motion vector prediction are output, weather weak signal leak detection is avoided, and the target tracking capability and the extreme weather generalization capability are improved.

The invention relates to the technical field of industrial control systems, and discloses a multi-axis multi-slave-station industrial control system, which comprises an upper computer; the master station is communicated with the upper computer through an Ethernet transmission control protocol; a plurality of extended slave stations, each of which is independently connected to the master station and communicates with the master station by using a CANFD communication protocol; wherein the master station and the extension slave station respectively comprise a multi-axis driving unit, and at least the master station comprises an IO control unit, so that the extension slave station can be in communication connection with the master station only through a CANFD transceiver chip. According to the invention, the master station communicates with the upper computer through an Ethernet transmission control protocol, the master station communicates with the slave station through a CANFD protocol, the slave station only needs a single CANFD transceiver chip, and both the master station and the slave station comprise a multi-axis driving unit, so that efficient communication with low cost is realized.

A method comprises receiving one or more data packets corresponding to at least one communications protocol request, and scanning the one or more data packets to validate one or more elements corresponding to the at least one communications protocol request. The at least one communications protocol request is rejected in response to invalidating the one or more elements, and the at least one communications protocol request is forwarded to one or more servers in response to validating the one or more elements.

The invention relates to the technical field of databases, in particular to a main and standby automatic fault switching system and method based on database state awareness, and the system comprises a daemon module which is used for monitoring the operation condition of a local database in real time, and periodically publishing and updating the state information of the local database; the synchronization program module is used for regularly connecting the main database and the local database and executing a differential synchronization strategy according to different synchronization requirements and environmental factors; the main library inquiry interface module is used for sending a transmission control protocol message to the daemon module; and the coordination program module is used for executing decisions of the main and standby library roles, managing and issuing main library information, and regularly updating the main library information and database information. The multi-node daemon program, the multi-node synchronization program, the main library inquiry interface and the single instance coordination program are integrated to jointly form the database fault automatic switching system, safe and accurate automatic switching during main library fault is achieved, and the safety of the main and standby automatic switching process is ensured.

A data packet transmission method and apparatus are provided. The method includes: An IAB donor determines first configuration information, where the first configuration information is used to indicate a first backhaul link BH RLC channel, and the first BH RLC channel is used to transmit a control protocol data unit PDU at a backhaul adaptation protocol BAP layer. The IAB donor sends the first configuration information to an IAB node. According to the foregoing procedure, the IAB donor indicates, by using the first configuration information, the IAB node to send the control PDU at the BAP layer through the first BH RLC channel, to implement bearer mapping when the IAB node needs to send the control PDU at the BAP layer.

The invention belongs to the field of Internet of Vehicles, and discloses an IVCPS vehicle-mounted terminal concurrent simulation test method, which comprises the following steps: S1, carrying out simulation construction on a traffic environment by using software, and constructing a vehicle end module, a cloud end module, a roadside facility module and a vehicle end information processing module according to an IVCPS scene; s2, based on a TCP / IP (Transmission Control Protocol / Internet Protocol) or UDP / IP (User Delivery Protocol / Internet Protocol) communication protocol, constructing communication modules between vehicles and roads, vehicle cloud and vehicles, and finishing information transmission and interaction between the vehicle and road cloud modules in a real local area network environment; s3, building a vehicle end performance monitoring module; and S4, establishing a vehicle end communication performance monitoring module. According to the method, the simulation environment can be flexibly adjusted, efficient interaction of information is realized, and the method can be used for monitoring the performance bottleneck in a concurrent scene.

The invention relates to the technical field of digital information transmission, in particular to a protocol stack fingerprint-based host asset surveying and mapping method, which comprises the following steps of: designing a host discovery algorithm of a combined multi-protocol data packet by referring to an open system interconnection seven-layer network model layering protocol; performing feature analysis and data preprocessing based on a protocol stack fingerprint rule base of a network mapper transmission control protocol, and constructing a protocol stack fingerprint data set of a host asset operating system; the host asset operating system fingerprint identification classification model is constructed based on the random forest algorithm, the coverage rate of survival host discovery is remarkably improved, and the limitation of a traditional rule-based matching method is effectively overcome. According to the method, the accuracy rate in the fingerprint identification task of the coarse-grained operating system reaches 97%, the weighted F1 value in the fingerprint identification task of the fine-grained operating system reaches 0.87, the technical level of host asset surveying and mapping is improved, and a more comprehensive and accurate technical path is provided for network asset security assessment.

The invention discloses a linear motion and rotary motion compound type robot flexible punching gun, which relates to the technical field of punching equipment and comprises a shell unit (01-00), a core unit (02-00), a zero reset unit (03-00), a floating unit (04-00) and a TCP (Transmission Control Protocol) unit (05-00). The method is scientific, reasonable and safe and convenient to use. The invention discloses a linear motion and rotary motion composite robot flexible punching gun. Punching of workpieces in different avoiding spaces is achieved through a linear motion form and a rotary motion form, meanwhile, the time for quickly replacing a punching gun is saved to improve the takt time and stability, and the problem of hydraulic oil leakage of a hydraulic driving system is solved without quickly replacing the punching gun. Due to the design of the floating unit, the whole punching gun is self-adaptive to fluctuation, generated by welding, of a punched face within the tolerance tolerance range of position tolerance, and smooth damage to a punched part due to the fact that the face needing to be punched is rigidly and rigidly pulled and punched by the punching gun within the tolerance tolerance range of the tolerance tolerance of profile tolerance is avoided.

The invention provides an nginx monitoring index scheme of a message queue. The method belongs to the technical field of web performance monitoring. According to the scheme, the method comprises the steps that Filebeat serves as a log collector and is deployed on an Nginx server, and access logs and error logs of the Nginx are captured in real time; the Filebeat encapsulates the collected log data into a message, and pushes the message to a Kafka message queue through a TCP (Transmission Control Protocol); the consumer pulls the log message from the Kafka, and analyzes and processes the Nginx access log in the message; and through an intelligent aggregation algorithm, performing aggregation processing on the Request-URLs with the same service meaning, and summarizing the Request-URLs as a monitoring index set. Nginx logs are captured in real time through Filebeat and quickly pushed to Kafka, and it is ensured that a monitoring system can respond to changes in the logs in time.

The invention discloses a method and a system for capturing and remotely controlling an equipment picture, in the system, a webpage end and an equipment end respectively establish TCP (Transmission Control Protocol) connection with a server end; the webpage side initiates an RTC connection request to the server side, and the server side forwards the request; the device end obtains a screen video stream, initializes RTC, configures video transmission parameters, and transmits the video stream to the webpage end; the webpage end and the equipment end carry out P2P connection negotiation through SDP and CAN information exchange, and after RTC connection is successfully established, the webpage end receives and displays a video stream of the equipment end; the webpage end monitors the control instruction and the function instruction and transmits the control instruction and the function instruction to the equipment end, and the equipment end executes a corresponding screen response according to the control instruction or the function instruction and sends an execution result to the webpage end to be displayed. Through the technical scheme of the invention, stable and timely interaction experience is provided, the pressure of data transmission and exchange is reduced, the migration cost of multiple types of equipment ends is reduced, and the development and maintenance cost is reduced.

The invention discloses a method and a system for debugging and running a brain-like computing chip, compared with the prior art, the system comprises an upper computer and a lower computer, the upper computer and the lower computer are connected through a transmission control protocol to improve the reliability of communication transmission, a command buffer module is introduced into the upper computer, and the command buffer module is connected with the lower computer. The upper computer packages communication data and a command header and puts the communication data and the command header into a command buffer module, so that one-time connection between the upper computer and the lower computer is realized, the overhead of multiple times of connection is reduced, and the communication efficiency is improved; in the lower computer, a sending module and a receiving module of a field programmable gate array based on a first-in first-out queue and a handshake mechanism play a role in buffering communication data, congestion control of the communication data is realized, and communication complexity is reduced.

The invention discloses an ALG (Application Layer Gateway) processing method and device, electronic equipment and a storage medium. The method comprises the steps that a control channel session table corresponding to a first message is detected, the control channel session table is used for recording a message load content length change difference value before and after a preset type of message is subjected to target conversion, and the preset type of message is a multi-channel protocol negotiation message based on a transmission control protocol; the target conversion is ALG application layer message information analysis and address conversion performed when passing through an NAT (Network Address Translation) router; determining a second message according to the type of the first message and a control channel session table corresponding to the first message, wherein the second message is a subsequent message which correspondingly needs to be forwarded after the first message; and carrying out forwarding processing on the second message. According to the technical scheme, the problem that the serial number operation consumption of the subsequent message after TCP message conversion in the NAT ALG scene is large is solved.

The invention relates to the technical field of Internet information, in particular to an Internet service provider-oriented encrypted multimedia traffic classification method and device.The method comprises the steps of capturing statistical characteristics, time sequence characteristics and original byte domains of target encrypted traffic to construct a multi-domain characteristic data set; simulating transmission control protocol behaviors in real network transmission according to the multi-domain feature data set to generate an enhanced data set containing transmission control protocol semantics; inputting the enhanced data set containing the transmission control protocol semantics into a pre-constructed hybrid fusion model so as to respectively extract a feature vector of each domain; and integrating the weight of the feature vector of each domain by using maximum likelihood estimation to determine the category of the target encrypted traffic. Therefore, the problems that an existing Internet traffic classification method mostly depends on single-dimensional features for classification, but the use of the single-dimensional features causes that an existing classification model cannot comprehensively capture traffic features, and the improvement of classification precision is limited are solved.

The invention relates to the technical field of data transmission, in particular to a data transmission system and method for enhancing computer network stability. Comprising the following steps of performing flow scheduling and multi-path transmission, setting data encryption and access control, implementing network topology dynamic adjustment, performing data transmission optimization, establishing security audit and log analysis, constructing baseband processing and error control, realizing cross-platform data synchronization and integration, and performing fault recovery and disaster recovery backup. Through a deep reinforcement learning algorithm and a multi-path transmission control protocol, the routing and priority of a data stream are intelligently adjusted, an encryption key which cannot be cracked is generated by using a quantum key distribution protocol and a continuous verification mechanism, and by combining network flow analysis and a machine learning algorithm, subnet division is dynamically adjusted, the size of a broadcast domain is reduced, and the transmission efficiency is improved. Fault diffusion is prevented and overall stability of the network is guaranteed.

In one embodiment, a network device includes a network interface to receive secured packets from a remote device over a packet data network, each of the secured packets being secured according to a security protocol and including a respective security protocol header and a Transmission Control Protocol (TCP) packet, which is encrypted according to the security protocol, a host device interface to connect the network device to a host device, and packet processing circuitry to decrypt each of the secured packets based on the respective security protocol header yielding multiple decrypted packets including decrypted TCP packets, aggregate the decrypted TCP packets into a single aggregated packet, and provide the single aggregated packet to software running on a processor of the host device via the host device interface.

The invention discloses a system for accelerating a satellite link, which comprises the following steps of: optimizing the data transmission speed by deploying a TCP (Transmission Control Protocol) agent module at a satellite ground station and a terminal; the agent module dynamically adjusts the size of a TCP window according to the link state, and optimizes the data flow; the link performance is monitored in real time, and the system adjusts a TCP proxy strategy and switches the link; the edge calculation module performs data preprocessing, compression, acceleration and optimization, and adopts an optimal algorithm and a flow distribution strategy; when the link quality is deteriorated, the system is automatically switched to a redundancy forward error correction mechanism and cooperatively works with the TCP agent module; end-to-end data encryption is carried out by adopting a quantum encryption technology, so that communication security is ensured; decentralized identity verification is realized by adopting a block chain technology, and identity credibility of communication nodes is ensured; according to the satellite link acceleration system, a flexible and dynamic acceleration mode is adopted, and the data transmission efficiency and stability are improved based on the intelligent proxy technology of the TCP protocol.

The invention discloses a data packet sending method and system for configuring a queue rule according to a power business demand, and the method comprises the steps: setting a queue rule corresponding to a business according to power business classification, configuring a priority, and distributing a rule scheme of a data packet sending space for different power business data with the same priority; the method comprises the following steps of: marking different types of power services through a giritc power service rule module added in a TCP / IP (Transmission Control Protocol / Internet Protocol) network protocol stack, and marking different flow control strategies according to queue rules corresponding to the services; and calling a corresponding network drive to send the data packet according to a queue rule realized by software. According to the method, a method of modifying a network data protocol stack in network equipment is adopted, the power business is customized and optimized and is matched with the power grid business demand when the flow overflows in an emergency, and multiple pieces of power business data still have the network communication capability under the condition that multiple pieces of power business data flow have the same priority, so that the network communication efficiency is improved. And the safety and the robustness of the power business are improved.

The invention discloses a flow-based deep intranet topology structure inference method and system, and belongs to the technical field of network topology construction. The method comprises the following steps: acquiring NTP (Network Time Protocol) traffic characteristics and TCP (Transmission Control Protocol) traffic characteristics of traffic; inferring the Windows equipment scale and the Linux equipment scale of each level of intranet according to the NTP traffic characteristics; performing hierarchical feature clustering on the TCP traffic based on the TCP traffic features and the Windows device scale and the Linux device scale of each level of intranet to obtain a TCP data packet array classified according to host devices; and performing host device relationship inference based on the TCP data packet array classified according to the host devices so as to construct a deep intranet topology structure. According to the invention, the network level of the deep local area network can be accurately deduced.

The invention provides a transmission control method based on flow and delay perception in a data center network, which comprises the following steps of: delay measurement: calculating round-trip delay and minimum queuing delay of a data packet without queuing delay to obtain a delay measurement result; transmission is paused, and the sender of the data packet adopts a corresponding strategy to execute transmission pause operation of the data flow according to the delay measurement result and different flow types. According to the method, a pause transmission technology is adopted, the data packets can be effectively prevented from being subjected to large queuing delay, meanwhile, short flow transmission is preferentially carried out, the overall performance of the network is remarkably improved, meanwhile, the method can be flexibly integrated to an existing timeout-free transmission control protocol, queuing backlog is rapidly eliminated, the link utilization rate is improved, and therefore the network performance is further improved.

The invention discloses a vehicle-mounted Ethernet link state identification method, device and equipment, a medium, a product and a vehicle, and relates to the technical field of vehicle-mounted Ethernet. The method comprises the steps of obtaining physical layer state information of an Ethernet link where an Ethernet ECU node is located based on a physical layer under the condition that the Ethernet ECU node is powered on; when the physical layer state information is detected to be abnormal, identifying that the Ethernet link is in a network abnormal state; under the condition that the physical layer state information is detected to be normal, data link layer state information of an Ethernet link is obtained based on a data link layer, and / or transmission control protocol state information between the Ethernet ECU node and an opposite end is obtained based on a transmission layer; and when the data link layer state information or the transmission control protocol state information is detected to be abnormal, identifying that the Ethernet link is in a network abnormal state. According to the embodiment of the invention, the overall Ethernet link state identification efficiency can be effectively improved.

There is provided an apparatus, method, and computer program for transmitting, to a first roaming intermediary, a hypertext transfer protocol connect request of establishing a transmission control protocol connection between the first roaming intermediary and a peer apparatus, wherein the transmission control protocol connection is used for establishing an inter-public-land-mobile-network signaling connection between the apparatus and the peer apparatus via the first roaming intermediary; and receiving, from the first roaming intermediary, a hypertext transfer protocol connect response comprising response information which indicates whether the transmission control protocol connection towards the peer apparatus is established; wherein the hypertext transfer protocol connect request comprises information indicating the peer apparatus, and wherein the hypertext transfer protocol connect request comprises a header comprising at least one of: information indicating the apparatus; information describing a purpose of establishing the transmission control protocol connection; information describing the inter-public- land-mobile-network signaling connection being established by using the transmission control protocol connection; or information controlling forwarding or origination of messages by the first roaming intermediary towards the apparatus or the peer apparatus.

The invention discloses a cross-local area network equipment interaction method and system, a terminal and a storage medium, and relates to the technical field of communication, and the method comprises the steps: building transmission control protocol connection with connection application equipment through a cloud server, and obtaining identification information sent by the connection application equipment; storing the identification information in a device connection table, and searching the identification information of the to-be-connected device matched with the identification information of the connection application device in the device connection table; and if the identification information of the to-be-connected device is found, the cloud server realizes interaction between the connection application device and the to-be-connected device according to the connection application device and the identification information corresponding to the to-be-connected device. According to the invention, the transmission control protocol connection is established between the cloud server with the public network address and the local area network equipment, and the cloud server is used as a transit to realize the interaction between the local area network equipment; therefore, the problem that the security of data transmission is difficult to guarantee while the shortage of the current public network internet protocol address is solved in the prior art can be effectively solved.

The invention discloses a game client seamless reconnection method, device and equipment in a weak network environment, and the method comprises the steps: after a client establishes network connection with a server through a TCP (Transmission Control Protocol), the server distributes a corresponding message serial number according to a generated message and caches the message serial number in a message cache pool; the client sends a heartbeat packet to the server regularly, and judges whether network connection is abnormal or not according to the heartbeat packet; when the network connection is abnormal, triggering a first reconnection mode to perform reconnection, and monitoring whether reconnection is successful in the first reconnection mode, if not, triggering a second reconnection mode to perform reconnection, and monitoring whether reconnection is successful in the second reconnection mode; and when reconnection succeeds, the client synchronizes a latest message serial number to the server, and the server screens out a message to be resent from the message cache pool according to the latest message serial number and sends the message to be resent to the client.

Most of the internet traffic today is carried out via the Transmission Control Protocol (TCP). The main advantage of TCP is that it provides reliable data transfer to the application layer and simplifies programming. The protocol maximizes data throughput but may also lead to noticeable transmission delay in wide area networks (WAN). A client-server based medical image viewing system is disclosed that achieves high data throughput over TCP without impacting responsiveness. Special timestamp messages inserted into the data stream allow the system to detect situations where network latency increases noticeably and to obtain a reliable estimate of sustained transfer bandwidth. The system applies a feedback scheme that avoids network delays by limiting send bandwidth. In addition other parameters, in particular image compression settings, are dynamically adjusted depending on current network quality.

The invention discloses a method and a system for identifying general overseas VPN (Virtual Private Network) proxy traffic based on a TCP (Transmission Control Protocol). The method comprises the following steps: S1, carrying out switch TCP traffic mirroring and session SYN related time delay calculation; s2, performing hash table interaction and time delay calculation under downlink message load distinguishing; s3, on the basis of judgment of the time delay # imgabs0 # and a threshold value D, counting and logic insertion are carried out on the HashVPS hash table; s4, periodically triggering HashVPS traversal and VPS proxy service affirmation in a timing manner; the system is suitable for the general overseas VPN proxy traffic identification method based on the TCP protocol. Aiming at various TCP transmission VPN protocols, the method breaks through conventional identification limitation, is not afraid of encryption, disguising and mining proxy traffic characteristic differences, constructs a complete identification closed loop, accurately screens out proxy traffic, and builds a network security defense line.

The invention discloses an intelligent edge calculation method for fire target detection, and belongs to the technical field of fire target detection, and the method comprises the following steps: S1, making a fire target detection data set; s2, an improved YOLO-AFPN-LADH-WIOU model is formed, and an improved YOLO-AFPN-LADH-WIOU S3, carrying out evaluation and transverse comparison on the improved YOLO-AFPN-LADH-WIOU model, and carrying out visual analysis on a result; s4, based on the step S3, realizing remote deployment of the basic model on the development board; s5, establishing a connection between the edge detection system and the client monitoring end by using a TCP transmission control protocol so as to perform interaction; and S6, realizing image acquisition and user GUI display. According to the intelligent edge calculation method for fire target detection, the precision, the speed and the breadth of detection are improved, and meanwhile, the real-time performance and the accuracy of fire monitoring and protection in practice are ensured.

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 relates to the technical field, and discloses a TCP connection information management method based on Netlink, and the method comprises the steps: obtaining an application process; establishing connection between the application process and the system to obtain TCP connection information; an initial Netlink socket is obtained; a blocking mode is set for the initial Netlink socket, and a blocking mode Netlink socket is obtained; sending TCP information to a system according to the TCP connection information and the blocking mode Netlink socket to obtain a TCP data packet; analyzing the data packets one by one to obtain a serial number, an acknowledgement number and an initial sending window; inputting the serial number and the acknowledgement number into a process, and setting to obtain a TCP transmission parameter; sending the serial number and the confirmation number to a specified destination address and port to obtain return information; and connecting with a destination address and a port according to the return information and the TCP transmission parameters to realize data transmission. According to the method, the problem that the data transmission efficiency of the TCP protocol is reduced due to the fact that the size of the sending window is adjusted to be too conservative when the TCP protocol is in a large-bandwidth environment and data volume sending is hindered can be solved.

The invention provides a traffic tracking method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of computers, in particular to the technical fields of traffic tracking, link tracking and the like. The specific implementation scheme is as follows: in response to a target process receiving a target domain socket link, obtaining a first socket address newly established based on the target domain socket link; obtaining a target thread corresponding to the first socket address based on the intermediate address value; the intermediate address value is an address value input by the target domain socket link calling function received by the target process; the target thread is a thread of the target process; and performing traffic tracking on the target domain socket link based on at least one target transmission control protocol link corresponding to the target thread.