Relay device, relay method, and computer program

A relay method, comprising:

• storing, in a storage unit, data which is received from a communication device through a first communication path;
• transmitting the data stored in the storage unit;
• deleting the transmitted data from the storage unit;
• determining, for the data received through the first communication path, whether or not an amount of data stored in the storage unit is equal to or greater than a threshold value;
• and
• transmitting, to the communication device, instruction data which gives an instruction to stop transmission through the first communication path and to perform transmission through a second communication path different from the first communication path, when it is determined that the amount of data is equal to or greater than the threshold value.

A computer program causing a computer to execute:

• storing, in a storage unit, data which is received from a communication device through a first communication path;
• giving an instruction to transmit the data stored in the storage unit;
• deleting the transmitted data from the storage unit;
• determining, for the data received through the first communication path, whether or not an amount of data stored in the storage unit is equal to or greater than a threshold value;
• and
• giving an instruction to transmit, to the communication device, instruction data which gives an instruction to stop transmission through the first communication path and to perform transmission through a second communication path different from the first communication path, when it is determined that the amount of data is equal to or greater than the threshold value.