Add "close" socket option for immediately close socket after finish check captive portal.

Unexpected packets are observed after captive portal check. Due to the packets, modem can't fall-back to idle state (modem remained as active state).
It makes unnecessary power consumtion.
To prevent it, "close" option is added in sendHttpProbe()

Test: check socket close.
Change-Id: I5b6987071ad915081846504adbb209eb371fd1c3
1 file changed
tree: bb4689b3026d5632e8056d8cb9f70a46587f2c0f
  1. src/
  2. tests/
  3. Android.bp
  4. AndroidManifest.xml
  5. OWNERS
  6. TEST_MAPPING