Abstract: A data processing method is provided. A terminal device encrypts a target instruction and a first identifier using a first key to obtain a first ciphertext; and sends the first ciphertext to an IoT device through an IoT platform. The IoT device decrypts the first ciphertext using a second key to obtain the target instruction and the first identifier; determines whether the first identifier matches a second identifier stored locally and comes to a matching result, the first key and the second key being negotiated by the terminal device and the IoT device; and obtains a second cipher text by encrypting the matching result using the second key. The terminal device receives the second ciphertext returned by the IoT device through the IoT platform; decrypts the second ciphertext using the first key to obtain a decryption result; and performs a corresponding operation using the decryption result.

Abstract: A method of processing request for a network system includes the steps of: (a) receiving a parent request by a second network node from a first network node, the parent request including a first request time; (b) acquiring a first remaining time by the second network node, the first remaining time being the time left for processing the parent request; (c) determining a first overrun time by the second network node, the first overrun time being determined by the first request time, the first remaining time and a first receipt time of the parent request, the first receipt time being the time the parent request is received by the second network node, and (d) aborting processing of the parent request by the second network node when the time lapsed between the first receipt time and a current time is equal to or greater than the overrun time.

Abstract: A data processing method is provided. A terminal device encrypts a target instruction and a first identifier using a first key to obtain a first ciphertext; and sends the first ciphertext to an IoT device through an IoT platform. The IoT device decrypts the first ciphertext using a second key to obtain the target instruction and the first identifier; determines whether the first identifier matches a second identifier stored locally and comes to a matching result, the first key and the second key being negotiated by the terminal device and the IoT device; and obtains a second cipher text by encrypting the matching result using the second key. The terminal device receives the second ciphertext returned by the IoT device through the IoT platform; decrypts the second ciphertext using the first key to obtain a decryption result; and performs a corresponding operation using the decryption result.

Abstract: A gas sampling bag valve with sealing rings moving back and forth to control a lateral gas nozzle is easy to operate and not prone to leaking gas. The connection portion between the valve and the membrane of the gas sampling bag comprises, from exterior to interior sequentially, a valve body with the lateral gas nozzle, a rubber gasket, the membrane of gas sampling bag and a bottom disc of a fastener, and the valve is fixed to the gas sampling bag by way of clockwise rotating the fastener. The sealing ring of top cover that controls a switch and is close to a knob prevents gas from leaking from a thread gap between the top cover control switch and the valve body.