52 results about "Raw socket" patented technology

A multiple network protocol encoder / decoder comprising a network protocol layer, data handler, O.S. State machine, and memory manager state machines implemented at a hardware gate level. Network packets are received from a physical transport level mechanism by the network protocol layer state machine which decodes network protocols such as TCP, IP, User Datagram Protocol (UDP), PPP, and Raw Socket concurrently as each byte is received. Each protocol handler parses and strips header information immediately from the packet, requiring no intermediate memory. The resulting data are passed to the data handler which consists of data state machines that decode data formats such as email, graphics, Hypertext Transfer Protocol (HTTP), Java, and Hypertext Markup Language (HTML). Each data state machine reacts accordingly to the pertinent data, and any data that are required by more than one data state machine is provided to each state machine concurrently, and any data required more than once by a specific data state machine, are placed in a specific memory location with a pointer designating such data (thereby ensuring minimal memory usage). Resulting display data are immediately passed to a display controller. Any outgoing network packets are created by the data state machines and passed through the network protocol state machine which adds header information and forwards the resulting network packet via a transport level mechanism.

A system, method and computer program product for implementing network connection failover during application service interruption. While the application is quiesced, a network socket that terminates a network connection to a network peer is maintained on behalf of the application. The socket's network connection state information is sustained by providing acknowledgements of incoming network traffic to the network peer that prevent the peer from terminating the connection. Upon restart, the application is brought up with a blocked socket. The state of the blocked socket is conformed to a current network connection state of the original socket and the blocked socket is unblocked.

A gigabit Ethernet adapter provides a provides a low-cost, low-power, easily manufacturable, small form-factor network access module which has a low memory demand and provides a highly efficient protocol decode. The invention comprises a hardware-integrated system that both decodes multiple network protocols byte-streaming manner concurrently and processes packet data in one pass, thereby reducing system memory and form factor requirements, while also eliminating software CPU overhead. A preferred embodiment of the invention comprises a plurality of protocol state machines that decode network protocols such as TCP, IP, User Datagram Protocol (UDP), PPP, Raw Socket, RARP, ICMP, IGMP, iSCSI, RDMA, and FCIP concurrently as each byte is received. Each protocol handler parses, interprets, and strips header information immediately from the packet, requiring no intermediate memory. The invention provides an internet tuner core, peripherals, and external interfaces. A network stack processes, generates and receives network packets. An internal programmable processor controls the network stack and handles any other types of ICMP packets, IGMP packets, or packets corresponding to other protocols not supported directly by dedicated hardware. A virtual memory manager is implemented in optimized, hardwired logic. The virtual memory manager allows the use of a virtual number of network connections which is limited only by the amount of internal and external memory available.

A method for establishing a TCP connection between two client terminals protected by stateful firewalls and comprising means for sending messages to each other via a messaging server. The client terminals agree on establishing a mutual TCP connection by sending a message, which indicates port numbers to be used on said connection. A TCP connection establishment procedure is started in both client terminals. After sending a first handshake message, a message indicating a sequence number of the first handshake message is sent from both client terminals to each other. When the firewalls of the opposite client terminals reject the first handshake message, an acknowledgement message to the first handshake message is created in both client terminals using a raw socket, which acknowledgement message includes the received sequence number as an acknowledgement number. Finally, the raw socket based acknowledgement message is sent to the opposite client terminal for completing the establishment of the TCP connection.

The invention discloses an illegal external connection monitoring method, device and system and a storage medium, and the method comprises the steps: obtaining HTTP flow information between a terminalin a first network and a first server in the first network, and the HTTP flow information comprising the interaction information of a first WEB service; respectively constructing a redirection message and an RST reset message through the original socket, wherein the redirection message comprises redirection information enabling the terminal to point to a second server configured in a second network and asynchronous request information enabling the terminal to asynchronously request a first WEB service for the first server; sending an RST reset message to the first server, so that the first server resets TCP connection of the first WEB service originally requested by the terminal; and sending the redirection message to the terminal, so that the second server determines that illegal external connection occurs to the terminal when receiving the request message sent by the terminal. Illegal external connection monitoring deployment is flexible, and users do not perceive the illegal external connection monitoring deployment.

The invention discloses a method and a system for batch upgrading of gateways based on WINDOWS and LINUX platforms, and relates to the field of communication between cross-platform equipment. The method comprises the following steps of enabling a server to establish the cross-platform bidirectional communication between a server and a client according to an original socket, wherein the server adopts a WINDOWS system, and the client adopts an LINUX embedded type system; enabling the server to dynamically distribute an unique IP (Internet protocol) address for the found client, and establishing TCP (transmission control protocol) connection; enabling the server to check whether the client needs to be upgraded or not; when the upgrading is not needed, finishing the process; when the upgrading is needed, enabling the client to rewrite a file transmission protocol defined in an inner core TCP / IP of the Linux system, splicing fragments of a file into a block, and directly storing into a memory. The method has the advantages that the integrity and correctness of the gateway client receiving the file can be guaranteed, the memory space is saved, the probability of upgrading failure is reduced, and the starting and finishing identifications of upgrading are clearly identified.

A gigabit Ethernet adapter provides a provides a low-cost, low-power, easily manufacturable, small form-factor network access module which has a low memory demand and provides a highly efficient protocol decode. The invention comprises a hardware-integrated system that both decodes multiple network protocols in a byte-streaming manner concurrently and processes packet data in one pass, thereby reducing system memory and form factor requirements, while also eliminating software CPU overhead. A preferred embodiment of the invention comprises a plurality of protocol state machines that decode network protocols such as TCP, IP, User Datagram Protocol (UDP), PPP, Raw Socket, RARP, ICMP, IGMP, iSCSI, RDMA, and FCIP concurrently as each byte is received. Each protocol handler parses, interprets, and strips header information immediately from the packet, requiring no intermediate memory. The invention provides an Internet tuner core, peripherals, and external interfaces. A network stack processes, generates and receives network packets. An internal programmable processor controls the network stack and handles any other types of ICMP packets, IGMP packets, or packets corresponding to other protocols not supported directly by dedicated hardware. A virtual memory manager is implemented in optimized, hardwired logic. The virtual memory manager allows the use of a virtual number of network connections which is limited only by the amount of internal and external memory available.

A protocol emulator includes an executable emulation application configured for promiscuously detecting IP frames on a network interface. The executable emulation application generates response IP frames for each corresponding detected IP frame. The protocol emulator also includes a raw socket configured for outputting each response IP frame onto the network interface. Hence, the protocol emulator minimizes use of UNIX kernel resources by eliminating IP filtering of received IP frames from the network interface, and by using a raw socket for sending a response IP frame generated by the emulation application instead of the socket layer or the kernel. Hence, the minimal use of UNIX kernel resources enables scalable emulation of multiple logical IP addresses, effectively enabling an unlimited number of IP devices to be emulated without assignment of IP addresses to respective sockets.

The invention provides a packet processing-based hypertext transfer protocol (HTTP) server and a data processing method thereof. The HTTP server processes data packets of a communication port by adopting an original socket, wherein the HTTP server receives data transmitted by a client, and the data is processed by a network card driver and is copied into a memory buffet zone of an application layer in a memory mapping mode; and in the process of transmitting the data, the HTTP server constructs an internet protocol (IP) data packet and transmits the IP data packet to an IP protocol stack, the IP protocol stack transmits the IP data packet to the network card driver, and the network card driver processes the IP data packet and transmits the IP data packet to the client. The provided packet processing-based HTTP server and the data processing method thereof can support mass data requests of the client and have better processing performance.

The invention discloses a method and system for processing capwap tunnel data on a wireless network controller based on a linux virtual network card. The method includes: receiving data from a UDP port 5247 of a downlink real network card; removing a capwap protocol header of the data and obtaining user data; or receiving data of a raw socket bound by an uplink real network card; processing the user data according to a forwarding rule and obtaining forwarded user data; comparing a target address of the processed user data with a user MAC address and judging a sending direction of the data; if the data is to be sent to a network, sending the data to the network through the raw socket bound by the uplink real network card; and if the data is to be sent to a wireless access point, adding the capwap protocol header to the data and sending the data to the wireless access point through the UDP port 5247 of the downlink real network card. Software related to the method and system is low in development difficulty, short in development cycle and small in dependence on hardware.

The invention provides a method for achieving batch data upgrade on two-layer switching devices. The method specifically comprises the steps that the multiple two-layer switching devices are connected with an interchanger which is connected with a PC terminal, the PC terminal is provided with a batch data upgrade tool which can upload batch data regularly, the PC terminal achieves data receiving and transmitting of a data link layer through a WinPcap open source bank, the two-layer switching devices achieve data receiving and transmitting of the data link layer through an original socket RAW SOCKET, upgrade data are transmitted between the PC terminal and the two-layer switching devices through a UCP, and then the batch data upgrade is completed. The UCP is an upgrade communication protocol and is a control protocol of the data link layer, the packet format of communication data packets of the batch data upgrade tool and the two-layer switching devices is defined, and the whole process of upgrade communication conversations is specified. By means of the method, resources are saved and upgrade efficiency is improved.

The invention provides a message processing method and device. The method comprises the steps that an NQA (Network Quality Analyzer) process sends an ICMP (Internet Control Message Protocol) echo request message to an RAWIP protocol through a raw socket; the RAWIP protocol adds a preset identifier field to an ICMP head of the ICMP echo request message and sends the ICMP echo request message carrying the preset identifier field; when receiving an ICMP echo reply message, the RAWIP protocol judges whether the preset identifier field is carried in the ICMP head of the ICMP echo reply message or not; if the preset identifier field is carried in the ICMP head of the ICMP echo reply message, the RAWIP protocol caches the ICMP echo reply message to a socket receiving buffer queue; and if the preset identifier field is not carried in the ICMP head of the ICMP echo reply message, the RAWIP protocol discards the ICMP echo reply message. Through application of the embodiment of the invention, theinfluence of an ICMP echo reply attack message on the normal processing of the ICMP echo reply message replied by a destination device can be avoided, and the network connectivity state inspection accuracy can be improved.

The invention provides a method simulating trap messages of multiple network elements and a system and relates to the communication technology field. The method comprises steps that, configuration files of a to-be-measured network management system are read to acquire and store configuration parameters of the to-be-measured network management system; command parameters inputted by a user through a simulation terminal are received and stored, an MAC address and an IP address of the simulation terminal are simultaneously read, an MAC address and an IP address of a simulation network element are generated based on the command parameters, the MAC address and the IP address of the simulation terminal according to predetermined rules; an Snmp trap message of the simulation element is assembled based on the configuration parameters and the MAC address and the IP address of the simulation network element and by employing the raw socket programming technology; the Snmp trap message is sent to the to-be-measured network management system through a raw socket sending function, and performance test on the to-be-measured network management system is carried out according to the Snmp trap message. Through the method, multiple network elements are simulated to send Snmp trap messages to the to-be-measured network management system, networking test on the to-be-measured network management system can be rapidly and conveniently carried out, and reliability and stability of the to-be-measured network management system can be effectively tested.

The invention discloses a data sending method, a data receiving method and a data communication system. The data receiving method is suitable for being performed in a first computing device. The firstcomputing device and a second computing device are in communication connection and store data processing rules. The method comprises the steps of establishing an original socket and setting a socketoption field to appoint a mode of filling an IP data packet, wherein the IP data packet comprises a packet header and a data field; obtaining a preset protocol number and port number from the data processing rules; filling the corresponding field of the packet header of the IP data packet with an IP address and the protocol number of the second computing device; filling the data field of the IP data packet with a transmission layer data packet corresponding to the protocol number, wherein the transmission layer data packet comprises the packet header and the data field, and filling the corresponding field of the packet header of the transmission layer data packet with the port number; and filling the data field of the transmission layer data packet with to-be-sent data, thereby generatingthe corresponding IP data packet; and sending the IP data packet to the second computing device.

A method for establishing a TCP connection between two client terminals protected by stateful firewalls and comprising means for sending messages to each other via a messaging server. The client terminals agree on establishing a mutual TCP connection by sending a message, which indicates port numbers to be used on said connection. A TCP connection establishment procedure is started in both client terminals. After sending a first handshake message, a message indicating a sequence number of the first handshake message is sent from both client terminals to each other. When the firewalls of the opposite client terminals reject the first handshake message, an acknowledgement message to the first handshake message is created in both client terminals using a raw socket, which acknowledgement message includes the received sequence number as an acknowledgement number. Finally, the raw socket based acknowledgement message is sent to the opposite client terminal for completing the establishment of the TCP connection.

The invention discloses a UDP effective message sending sequential control method. The method employs combination of a common hardware and software, and uses an original socket technology to directlybypass a protocol stack and a lower-layer MAC of an operation system, thereby fully controlling random packages and parameter change of lower-layer network messages; furthermore, data filling and transmission are separated using multithreading technology, and one CPU core is exclusively provided in transmission and receiving, thereby ensuring full-speed transmission of network; moreover, time among effective network messages is filled using ineffective network messages, thereby realizing nanosecond control of time interval of effective network messages.

The invention relates to network communication field, for solving the problem that prior Linux system can not acquire certain consultative message in a bridge mode, particularly providing a method of transmitting the message under linux bridge mode and a system. Received message is processed on a mount point 3 between the step of processing the mount point 1 and transmitting the received message, comprising: judging whether protocol type value of the received message is a special protocol type value, if true, copying the received message and copying to a Raw socket unit corresponding to the protocol type value, obtaining received message through the Raw socket unit by a supernatant application program; otherwise transmitting the received message. The invention has the advantages in that, the Linux system greatly advances system performance in the bridge mode, thereby reducing system load and increasing monitoring efficiency.

The invention provides a method for simulating multiple clients to test DHCP by utilizing raw socket, which comprises the following steps: configuring a DHCP server in SDN equipment, and starting theDHCP server; on the SDN client equipment, specifying a parameter type to establish raw socket connection, binding a CPU, and filling a DHCP request message; and finally, sending a request message atthe client to test the DHCP, and checking a test result at the DHCP server to obtain test data. Based on the method, the invention further provides a system for simulating the multiple clients to testthe DHCP by using the raw socket. The method provided by the invention is efficient, simple in logic and high in universality, realizes load pressure test in the aspects of performance and function of the DHCP server, and determines the maximum load capacity that the DHCP can bear under the condition of meeting the performance index by gradually increasing the number of concurrent users so as toobtain the maximum service level of the DHCP.

The invention provides a one-way communication method and apparatus, a user terminal and a computer readable storage medium. The method includes the following steps: a sender creates an original socket and constructs an ether frame; the sender sends a connection message to a receiver based on the ether frame according to the original socket, so that the receiver returns a response message according to the connection message; and a one-way communication protocol is established after the sender receives the response message, and data interaction is performed with the receiver according to the one-way communication protocol. The one-way communication method performs one-way communication by utilizing a simple and reliable one-way communication protocol, the data interaction in an operating environment in which message interaction needs to be performed without a protocol stack is completely satisfied the protocol stack is simple in technology, the development cost is greatly reduced, and great convenience is brought for research and development work of research and development personnel in a communication field.

The invention discloses a method, equipment and system for configuring and managing an AP (Access Point) and a medium. The method for managing an equipment end comprises the following steps of: establishing an original socket based on a data link layer and binding the original socket to a network card interface; sending a first data packet, wherein the first data packet comprises an MAC address and a broadcast address of the management equipment; receiving a second data packet sent by the wireless access node AP, wherein the second data packet comprises the MAC address of the AP; the management equipment sends a third data packet to the AP corresponding to the second data packet according to the MAC address, wherein the third data packet comprises a management API acquisition request; receiving a response message corresponding to the management API acquisition request, wherein the response message comprises an API interface list of the AP corresponding to the second data packet; and sending a fourth data packet to the AP corresponding to the second data packet according to the MAC address, wherein the fourth data packet comprises at least one API in the API interface list and a parameter corresponding to the API. The method is based on an original socket of a data link layer, and configuration can be carried out without depending on an IP address; and meanwhile, the IP address resource is also saved.

A multiple network protocol encoder / decoder comprising a network protocol layer, data handler, O.S. State machine, and memory manager state machines implemented at a hardware gate level. Network packets are received from a physical transport level mechanism by the network protocol layer state machine which decodes network protocols such as TCP, IP, User Datagram Protocol (UDP), PPP, and Raw Socket concurrently as each byte is received. Each protocol handler parses and strips header information immediately from the packet, requiring no intermediate memory. The resulting data are passed to the data handler which consists of data state machines that decode data formats such as email, graphics, Hypertext Transfer Protocol (HTTP), Java, and Hypertext Markup Language (HTML). Each data state machine reacts accordingly to the pertinent data, and any data that are required by more than one data state machine is provided to each state machine concurrently, and any data required more than once by a specific data state machine, are placed in a specific memory location with a pointer designating such data (thereby ensuring minimal memory usage). Resulting display data are immediately passed to a display controller. Any outgoing network packets are created by the data state machines and passed through the network protocol state machine which adds header information and forwards the resulting network packet via a transport level mechanism.

The invention belongs to the technical field of computers, and particularly relates to a data transmission method, a data transmission device, a computer readable medium and electronic equipment. The method comprises the following steps: packaging a to-be-sent data segment recorded in a state memory into a downlink TCP data packet with a TCP message format based on a user mode protocol stack; sending the downlink TCP data packet to a client through an original socket, so that the client receives the downlink TCP data packet through a TCP socket; and when an uplink TCP data packet returned by the client is received through the original socket, determining a target TCP connection matched with the uplink TCP data packet according to the identification information of the TCP connection recorded in the state memory, so as to transmit the uplink TCP data packet to a server corresponding to the target TCP connection. The method can improve data transmission efficiency and transmission reliability.

The invention relates to a real-time Ethernet field bus network data packet processing method based on PACKETMMAP, and relates to the technical field of numerical control, in particular to the technical field of real-time Ethernet field buses, and specifically relates to a real-time Ethernet field bus data packet processing method based on an original socket, and the original socket adopts a PACKETMMAP method. The method comprises the following steps: firstly, analyzing a transmission path of a real-time Ethernet fieldbus data packet from a network card driver to a kernel network protocol stack, and establishing a capture point of the real-time Ethernet fieldbus data packet at an entrance of the kernel network protocol stack; then, analyzing the characteristics of the data packet at the capture point, and establishing a data packet capture and forwarding method based on PACKETMMAP; and finally, according to the bus protocol type to which the data packet belongs, designing an analysis processing method of the data packet in the real-time Ethernet bus component in the user space.

The present invention provides a one-way communication method, device, user terminal and computer-readable storage medium, wherein the method includes: the sender creates a raw socket and constructs an Ethernet frame; word, based on the Ethernet frame to send a connection message to the receiver, so that the receiver returns a response message according to the connection message; after receiving the response message, the sender establishes one-way communication protocol, and perform data interaction with the receiver according to the one-way communication protocol. The present invention uses a simple and reliable one-way communication protocol for one-way communication, which fully satisfies data interaction in an operating environment where there is no protocol stack and message interaction is required. The protocol stack technology is simple and greatly reduces development costs. The research and development work of the research and development personnel in the field brings great convenience.

The invention discloses a gate offline detection method based on SYN semi-connection data packets. The method comprises the following steps: S01, initializing a Pcap library, and setting a Pcap filtering rule; S02, initializing a Raw Socket, and creating a Raw Socket original socket to directly send SYN handshake data on an OSI network layer; S03, initializing an LRU queue, and recording an original IP address, a final response timestamp and an IP address of the gate; S04, sending and receiving an SYN semi-connection data packet, sending the SYN semi-connection data packet to the gate machineby the server, receiving data through the Pcap by the gate machine receives, analyzing the data into an OSI model data structure and transmiting the OSI model data structure to the OSI model application layer; and S05, updating and searching the LRU queue, positioning the memory position of the gate information in the LRU priority queue, and judging whether the gate is offline or not according tothe response time. According to the invention, the gate detection survival mode configuration is flexible. The reporting interval is short. The broadband consumption is small. The occupied heartbeat receiving server resources are few, and the machine room safety is not limited.

A method for realizing an adaptive extended domain management entity mechanism in a flexible IP network technical system, the method is: when a network access point of a mobile node switches to another link, the address of the extended domain management entity is obtained through proxy discovery, Determine whether it and the extended domain management entity belong to the same network segment. If yes, construct the registration request data packet according to the traditional mobile IP principle, and send the extended domain management entity to forward the registration request; if not, obtain the relevant information, construct the original socket, and Send a registration request to the extended domain management entity; through registration, the mobile node informs the basic domain management entity of its care-of address; establishes a bidirectional tunnel between the extended domain management entity and the basic domain management; the extended domain management entity generates a proxy ARP of the mobile node Table entry to enable proxy ARP mechanism for successfully registered mobile nodes. The invention solves the technical problem that the foreign agent entity of the traditional mobile IP performs the full-agent function, which reduces the communication efficiency and occupies the system resources of the foreign agent entity.

The invention provides a method simulating trap messages of multiple network elements and a system and relates to the communication technology field. The method comprises steps that, configuration files of a to-be-measured network management system are read to acquire and store configuration parameters of the to-be-measured network management system; command parameters inputted by a user through a simulation terminal are received and stored, an MAC address and an IP address of the simulation terminal are simultaneously read, an MAC address and an IP address of a simulation network element are generated based on the command parameters, the MAC address and the IP address of the simulation terminal according to predetermined rules; an Snmp trap message of the simulation element is assembled based on the configuration parameters and the MAC address and the IP address of the simulation network element and by employing the raw socket programming technology; the Snmp trap message is sent to the to-be-measured network management system through a raw socket sending function, and performance test on the to-be-measured network management system is carried out according to the Snmp trap message. Through the method, multiple network elements are simulated to send Snmp trap messages to the to-be-measured network management system, networking test on the to-be-measured network management system can be rapidly and conveniently carried out, and reliability and stability of the to-be-measured network management system can be effectively tested.

The invention provides a communication testing method and device, a storage medium and electronic equipment, and relates to the technical field of communication testing. The communication testing method is applied to the power acquisition terminal, and comprises the following steps: receiving a first data packet sent by a host through a first original socket; generating a second data packet according to a preset rule; sending a second data packet to the host according to the physical address of the host in the first data packet, so that the host processes the second data packet to obtain a third data packet, and sends the third data packet to the power acquisition terminal according to the physical address of the power acquisition terminal in the second data packet; and judging whether the communication channel is stable according to the second data packet and the third data packet, and if so, recording that the test is successful. When the method is used for testing the data communication stability, the testing efficiency can be higher.

The invention discloses a method for recording operation history based on a man-machine interface, comprising a data acquisition gateway, an operation history data analysis module, an HMI system, and a data storage module, including the following steps: deploying the data acquisition gateway on a man-machine interface computer Or on the CS server of the HMI system; the communication message of the CS server is generated through the HMI system; the operation history data analysis and recording module filters out all the communication messages of the CS server through the original socket; the communication message of the CS server is repackaged , forwarded to the operation history data analysis module; the operation history data analysis module decomposes according to the message type, analyzes the data in it, and saves it into the relational database of the data storage module; the data storage module stores the corresponding screen information and screen operation . The present invention collects data by using the hybrid mode of the network card, without installing third-party software.