Modbus

merge

2021-06-07, Edouard Tisserant
e319814f1c17
Parents 4f584251c73d16ea5cbbda4e
Children 9a9096db9e16835e9dad64d9
merge
1 files changed, 12 insertions(+), 0 deletions(-)
  • +12 -0
    mb_tcp.c
    • --- a/mb_tcp.c Sun Jun 06 22:52:40 2021 +0100
    +++ b/mb_tcp.c Mon Jun 07 11:21:26 2021 +0200
    @@ -467,6 +467,18 @@
    }
    /* configure the socket */
    + {
    + int optval;
    + socklen_t optlen = sizeof(optval);
    + optval = 1;
    + if(setsockopt(socket_id, SOL_SOCKET, SO_KEEPALIVE, &optval, optlen) < 0) {
    +#ifdef ERRMSG
    + perror("setsockopt()");
    + fprintf(stderr, ERRMSG_HEAD "Error configuring socket 'KeepAlive' option.\n");
    +#endif
    + return -1;
    + }
    + }
    /* set the TCP no delay flag. */
    {int bool_opt = 1;
    if (setsockopt(socket_id, SOL_TCP, TCP_NODELAY,