| 摘要 |
A data-processing device is provided which communicates with an external device through a proxy server. The device includes an acquiring unit that acquires sizes of data that can be transmitted through each of a plurality of transmission modes of the proxy server, a determining unit that compares the sizes corresponding to each transmission mode with a size of data to be transmitted and determines a transmission mode to be used on the basis of the result of the comparison, and a transmitting unit that transmits data to the external device in the determined transmission mode.
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