7 results about "STUN" patented technology

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.

Embodiments herein relate to a method performed by a network node for handling communication related to a UE in a communications network. The network node transmits a message to another network node, wherein the message is related to a proxy capability such as requesting or indicating a TURN and / or STUN capability in a communication.

This invention relates to the field of computer multimedia communication, and in particular to a WebRTC video conferencing system and media stream conversion method compatible with GB / T28181 devices. The system adopts a layered architecture, including a service layer, a STUN / TURN server, a signaling layer, and a media layer. The service layer provides service interfaces for WebRTC clients and stores service data. The STUN / TURN server is used to implement NAT traversal. The signaling layer includes a WebRTC signaling module, a signaling protocol conversion module, and a GB / T28181 signaling module. The media layer includes a WebRTC media module, a media transcoding module, a congestion control module, and a GB / T 28181 media module. This solution proposes the IGCC-A algorithm to reduce frequent jitter in the transmission rate caused by small fluctuations in network latency, and realizes the structure of a WebRTC video conferencing system that accesses GB28181 devices.

The application provides a network address conversion type detection method, system and electronic equipment, relates to the field of cloud computing, and the method comprises the following steps: a STUN server returns reply messages corresponding to a plurality of NAT type detection request messages in response to the plurality of NAT type detection request messages sent in parallel by a client for a plurality of public network address information, so that the client determines the NAT type according to the plurality of reply messages, wherein the local port is determined by mapping the plurality of public network address information through a load balancing server. In the embodiment, the demand of the client for sending the NAT type detection request message in parallel is met through the two-level service architecture of the STUN server and the load balancing server, the interaction process of the STUN server and the client is simplified, and the NAT type detection efficiency is improved.

Techniques for creating an optimal and secure data plane based on network constraints. The techniques may include establishing an initial networking connection for a data flow between a client device and a resource such that data plane traffic of the data flow is routed through a relay node disposed between the client device and the resource. In some examples, the techniques may include determining, using a Session Traversal Utilities for Network Address Translators (STUN) server, an alternate networking connection for the data flow that bypasses the relay node. Based at least in part on a determination that the alternate networking connection is a more optimal path for the data plane traffic than the initial networking connection, the techniques may include causing the data plane traffic of the data flow to be routed over the alternate networking connection.

The application discloses a kind of RTP media stream protection and talk migration smooth method and device, belong to VoIP technical field.In the method, maintain three-state security state machine including open state, learning state and locking state for each RTP transmission instance;In learning state, the continuity of candidate source address is counted, and after timeout, it is forced to lock, and the count is reset based on packet interval analysis detection flooding attack;Tracking SDP negotiation target address, give it priority through right;When detecting talk migration event, recalibrate RTP sequence number offset increment, so that output sequence number keeps continuous increment;In RTCP-MUX multiplexing mode, RTP media packet, RTCP control packet and STUN probe packet are distinguished according to flag bit and payload type range.The application is guaranteed by multidimensional source address security learning and cross-session sequence number continuity, effectively resist address spoofing and flooding attack, realize sequence number seamless continuation in talk transfer scene, ensure downstream receiving end no perception and DTMF signaling integrity.

This invention relates to a method for sharing real-time IPTV content to a mobile terminal for playback, belonging to the field of wireless communication and terminals. The method includes: the IPTV device and the mobile terminal sending a STUN request to a public STUN server to bypass NAT and automatically obtain the corresponding public IP address; the IPTV device and the mobile terminal establishing an IPSec encrypted tunnel based on the IPSec protocol; the IPTV device receiving the operator's playback stream, extracting video and audio data, re-encapsulating it into RTP format, encrypting it, and transmitting it to the mobile terminal through the IPSec encrypted tunnel; the mobile terminal decrypting and verifying the integrity of the data packets, extracting the RTP payload, and playing the corresponding video and audio data in real time; the mobile terminal sending control commands to the IPTV device through the IPSec encrypted tunnel; the IPTV device parsing the control commands and calling an API to switch channels, synchronously updating the electronic program guide information to the mobile terminal. This method enables mobile devices to remotely receive and play television channel content from a home IPTV device via the public network, overcoming spatial limitations.