Abstract: The present invention discloses a method for implement real time data service and a real time data service system. After starting to forward data messages to an accessed user terminal, an access point (AP) of the real time data service system verifies the user terminal, and continues forwarding the data messages to the user terminal after the verification is successful.

Abstract: The present invention discloses an apparatus and a method for processing extension information in an image file, wherein, the method includes: editing the extension information for image file; encrypting the edited extension information, and additionally writing the encrypted extension information into the image file; and extracting the encrypted extension information from the needed image file, and decrypting the encrypted extension information. The apparatus comprises an editing module, an encrypting module and a decrypting module. The present invention realizes the method for editing the extension information for image files in various formats; and guarantees the security of the extension information, that is, even if the image information in the image file is leaked, there is no need to worry about the leakage of extended information in the image file, and a user can view the content of extended information as required at any time, and meanwhile, the application fields are wide.

Abstract: A network communications method includes receiving, at a first networking device, a request for a network resource from a client device via a first communication path of a wide area network. The method includes obtaining first diagnostic information indicating an amount of transmission delay or packet loss for communications transmitted through the first communication path, and obtaining second diagnostic information for a second communication path between the client device and a second networking device. The method includes comparing the first and second diagnostic information to estimate whether the second communication path will enable faster transmission of communications than the first communication path.

Abstract: Methods, systems, and computer readable media system for collecting and distributing session initiation protocol (SIP) event watcher entity subscription information in a communications network are disclosed. According to one aspect, the method includes receiving, at a first notifier server from a watcher entity client, a first subscription request for SIP event information associated with one or more watched entity clients. The method also includes receiving, at a watcher information (WINFO) entity, SIP event subscription information that includes an identifier indicating that the first notifier server serves the watcher entity client, storing the SIP event subscription information in the WINFO entity, detecting the unavailability of the first notifier server. The method further includes sending an instruction message, based on the identifier in the stored SIP event subscription information, to direct the watcher entity to generate a second subscription request associated for the SIP event information.

Abstract: A method and non-transitory computer-readable medium are disclosed for extending a hold timer that binds an application-layer session when a transport-layer out-of-order message queue includes an out-of-order message for the application-layer session. An application receives an application-layer message from transport protocol logic that is configured to deliver in-order application-layer messages to the application. The received application-layer message is a next in-order application-layer message for an application-layer session that is bound by a hold timer. After an amount time has passed, the application detects an expiration of the hold timer. In response, rather than immediately tearing down the application-layer session, the application inspects an out-of-order queue of the transport protocol logic. The hold timer is extended when the out-of-order queue includes an out-of-order application-layer message for the application-layer session.

Abstract: The binding of addresses and port ranges is performed by a device, based on network usage conditions. The device may determine a port block size, indicating a quantity of ports, to allocate to client devices. The device may transmit a message including an Internet Protocol (IP) address and a port range. The message may indicate that the IP address and port range is to be allocated to the one of the client devices based on an order of a first port value and a second port value in the port range, where the port range covers a quantity of ports corresponding to the port block size.