curl - When is a HTTP request lost? -

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i need send quite large http requests mobile device. in situation request lost (so data sent have resent)?

what happen example if there no radio-connection few seconds? depend on decision in network can't control?

there not timeouts on server. control client , can assume stable. calls goes curl libraries (posix c++, embedded linux), , limited how can change it.

as "some" said, should split upload parts, number them , re-assemble them on other end. once wrote webservice that, client have confirmation particular part has been received right checksum (for example sha-1 hash).

if confirmation doesn't come because of time out or hash doesn't match, client should re-send part. advice make each chunk small enough 1-10 kb, depending on expected network speed (slow network smaller chunks).


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