Relay communication method and relay communication device

A non-transitory computer-readable recording medium having stored therein a relay communication program that causes a computer to execute a process, the process comprising:

• receiving data from an application;
• determining whether a data remaining amount to be relayed to a communication destination in response to receiving of new data of the application is larger than a predetermined amount, the predetermined amount being set in advance according to an allowable amount of delay of the data at a time of relaying to the communication destination;
• and
• when the data remaining amount is larger than the predetermined amount, determining a relay path of each of a plurality of data received from the application according to a protocol of a disruption tolerant network based on a priority of each of the plurality of data,
• wherein the priority is set based on time information that is assigned to each of the plurality of data received from the application and indicates a time at which each of the plurality of data is generated,
• when the data remaining amount is larger than the predetermined amount and when the priority of the new data among the plurality of data received from the application is higher than the priority of other data, the process further comprising storing the other data in a storage area corresponding to a communication interface different from the new data,
• when the data remaining amount is larger than the predetermined amount and when the priority of the new data among the plurality of data received from the application is higher than the priority of the other data, the process further comprising assigning information related to the relaying process to the other data.

A relay communication device, comprising:

• a memory;
• and
• a processor coupled to the memory and the processor configured to:
• receive data from an application;
• determine whether a data remaining amount to be relayed to a communication destination in response to receiving of new data of the application is larger than a predetermined amount, the predetermined amount being set in advance according to an allowable amount of delay of the data at a time of relaying to the communication destination;
• and
• when the data remaining amount is larger than the predetermined amount, determine a relay path of each of a plurality of data received from the application according to a protocol of a disruption tolerant network based on a priority of each of the plurality of data,
• wherein the priority is set based on time information that is assigned to each of the plurality of data received from the application and indicates a time at which each of the plurality of data is generated,
• when the data remaining amount is larger than the predetermined amount and when the priority of the new data among the plurality of data received from the application is higher than the priority of other data, store the other data in a storage area corresponding to a communication interface different from the new data,
• when the data remaining amount is larger than the predetermined amount and when the priority of the new data among the plurality of data received from the application is higher than the priority of the other data, assign information related to the relaying process to the other data.