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authorChris Luke <chrisy@flirble.org>2017-10-26 10:44:43 -0400
committerFlorin Coras <florin.coras@gmail.com>2017-10-27 22:47:16 +0000
commitae5a02f8235b9a243df09b42e932ae5f238e366b (patch)
tree708df1a7df2698b720c4cb0d617c1e9d53f56c89 /src/vat
parentead85e91ce4235e2b4520c181dfcabc7df73e46d (diff)
Fix for vppctl and interactive commands (VPP-1038)
- Interactive commands like "ping" read extra input from the input stream. - In the case of "ping" it is simply a signal to cease the current operation. - "vppctl", in non-interactive mode, will issue a "quit" immediately after the requested command to queue up closing of the session. - This resulted in "ping" thinking a keypress was seen and returning control to the CLI; the "quit" command however is consumed by the keypress event handler and thus the session does not close. - This patch reworks vppctl slightly to only issue "quit" after the command has completed. In particular it uses the fact that VPP issues NUL bytes as a surrogate prompt between output of commands to signal acknowledgement that the command has completed; vppctl now flags that the quit should be issued after the next such acknowledgement. - Since input it still accepted, the user can still terminate the "ping" early, if desired. Change-Id: I7e3dbe767f32f8e364ccb5f81799759b311585df Signed-off-by: Chris Luke <chrisy@flirble.org>
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