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POSIX requires to send SIGPIPE on write to SOCK_STREAM socket which was shutdowned with SHUT_WR flag or its peer was shutdowned with SHUT_RD flag. Also we must not send SIGPIPE if MSG_NOSIGNAL flag is set. Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>