Network connection method capable of analyzing data packets in order to select connection routes

A network connection method capable of analyzing data packets in order to select connection routes, the network connection method being applicable to a network system comprising a client device and a plurality of source devices, the client device being connected to the Internet respectively through a first connection route and a second connection route so as to establish a connection channel with each said source device, the client device being provided with a routing table, the routing table storing plural entries of source data and plural predetermined routes, each said entry of source data corresponding to a said source device with which the client device has established a said connection channel before, each said predetermined route representing the first connection route or the second connection route and corresponding to a said entry of source data, thus enabling the client device to select, according to a said entry of source data, a corresponding said predetermined route and transmit data packets to and from a corresponding said source device through the corresponding predetermined route, the network connection method comprising the steps, to be performed by the client device, of:

• receiving a data packet from a said source device;
• analyzing the data packet and determining whether the data packet contains highly delay-sensitive data or delay-insensitive data, upon determining that the source device does not correspond to any said entry of source data in the routing table;
• transmitting the data packet to the client device through the first connection route, upon determining that the data packet contains highly delay-sensitive data;
• transmitting the data packet to the client device through the second connection route, upon determining that the data packet contains delay-insensitive data;
• and
• adding network connection data of the source device into the routing table as an entry of source data, and recording a corresponding connection route as a predetermined route in the routing table so that, when the source device transmits a second data packet, the client device can directly select from the routing table a corresponding said predetermined route and transmit the second data packet therethrough.