fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmocom-bb/+/41694?usp=email )

Change subject: trx_toolkit: UDPLink: catch and ignore BlockingIOError ......................................................................

trx_toolkit: UDPLink: catch and ignore BlockingIOError

We should not crash when failing to send a datagram due to blocking. Print an error, drop the data, and keep going.

Change-Id: If2248d4a670f893848c44e0fcbd2089371532207 Related: OS#6904 --- M src/target/trx_toolkit/udp_link.py 1 file changed, 8 insertions(+), 2 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmocom-bb refs/changes/94/41694/1

diff --git a/src/target/trx_toolkit/udp_link.py b/src/target/trx_toolkit/udp_link.py index 4db7283..f0a8224 100644 --- a/src/target/trx_toolkit/udp_link.py +++ b/src/target/trx_toolkit/udp_link.py @@ -17,6 +17,7 @@ # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details.

+import logging as log import socket

class UDPLink: @@ -45,5 +46,10 @@ def sendto(self, data, remote): if type(data) not in [bytearray, bytes]: data = data.encode() - - self.sock.sendto(data, remote) + try: + self.sock.sendto(data, remote) + except BlockingIOError: + # When the message does not fit into the send buffer of the socket, send() + # normally blocks, unless the socket has been placed in nonblocking I/O mode. + # In nonblocking mode it would fail with the BlockingIOError in this case. + log.error('(%s) BlockingIOError: dropping Tx data', self.desc_link())