* these pass in 0.5s since server sends ping on connect
* comments
* unused
* fix
* fix these too
* check end_event while uploading, throw abort exception if we need to shut down/restart
* Revert "check end_event while uploading, throw abort exception if we need to shut down/restart"
This reverts commit f0b822fca98cd8e2b3d4d6d5ede6b512d3ed3ec0.
* more tol for lte connection