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Dimitris Aragiorgis authored
nfdhcpd opens a socket during init. socket.send() blocks in case SO_SNDBUF is full. This might happen when packages are pushed to buffer but never consumed (e.g. VM is shuting down). To fix this we use non-blocking send with MSG_DONTWAIT and catch the error when the resource is not available. In order to empty the socket buffer we close the socket and re-open it. To this end we need CAP_NET_RAW capability otherwise operation (socket.socket()) is not permitted. Add various logging messages (during client creation, opening a socket, etc.) Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>
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