Mechanism for Traversing Unknown Middleware of Networks in Using Multipath for Transmitting Data in Mobile

Running services may not function properly due to port blocking. In the mobile scenario, some ports of data transmission service may be intercepted by unknown network middleware in the transmission process, resulting in high packet loss rate and low network bandwidth. The traditional port detection methods lack the cooperation of the receiver device, it can not fully discover the available ports and is easy to be intercepted by the firewall of the detected device and it can not be flexibly adjusted according to the change of device address in the mobile environment. In this paper, aiming at solving the interception of port for data passing through unknown network middleware in data transmission, a port detection mechanism for mobile network is proposed. This mechanism can detect the port of which can pass unknown network middleware when the device address changes frequently, and a protocol is designed to cooperate with the detection between sender and receiver. It can detect the ports that are available but not enabled with data transmission service, and will not be affected by the firewall which blocks the specific protocol detection packet of the detected device.