Fix aborts due to transmit window overflow

c0b02222 made conn->sendable unsigned. If the device reduces the window
after we've sent too much data already, it can become negative,
overflow, and cause connection aborts when we send too much data. Fix
this by checking for this condition and setting conn->sendable to 0.

Thanks to Thomas Jost and Nikias Bassen for debugging this issue.

0 files changed, 0 insertions, 0 deletions