Libinfo-459.40.1.tar.gz

[apple/libinfo.git] / nis.subproj / yp_order.c

diff --git a/nis.subproj/yp_order.c b/nis.subproj/yp_order.c
index 44b7a7c0b85bbc1aca3ceadfb73acce34750826c..72946d7936a0b6180177f8f5a4d802133a0ffe8c 100644 (file)
--- a/nis.subproj/yp_order.c
+++ b/nis.subproj/yp_order.c
@@ -82,7 +82,8 @@ yp_order(indomain, inmap, outorder)
        struct ypresp_order ypro;
        struct ypreq_nokey yprnk;
        struct timeval  tv;
-       int             r = 0;
+       int tries = 0, r = 0;
+       static int proto = YP_BIND_UDP;
 
        if (indomain == NULL || *indomain == '\0' ||
            strlen(indomain) > YPMAXDOMAIN || inmap == NULL ||
@@ -102,7 +103,7 @@ again:
        (void)memset(&ypro, 0, sizeof ypro);
 
        r = clnt_call(ysd->dom_client, YPPROC_ORDER,
-           xdr_ypreq_nokey, &yprnk, xdr_ypresp_order, &ypro, tv);
+           (xdrproc_t)xdr_ypreq_nokey, &yprnk, (xdrproc_t)xdr_ypresp_order, &ypro, tv);
        /*
         * XXX
         * NIS+ YP emulation package does not impliment YPPROC_ORDER
@@ -111,13 +112,21 @@ again:
                r = YPERR_YPERR;
                goto bail;
        }
-       if (r != RPC_SUCCESS) {
-               clnt_perror(ysd->dom_client, "yp_order: clnt_call");
-               ysd->dom_vers = -1;
+
+       if (r != RPC_SUCCESS)
+       {
+               /* call failed - switch protocols and try again */
+               if (tries++) clnt_perror(ysd->dom_client, "yp_order: clnt_call");
+
+               if (proto == YP_BIND_UDP) proto = YP_BIND_TCP;
+               else proto = YP_BIND_UDP;
+               ysd->dom_vers = proto;
+
                goto again;
        }
+
        *outorder = ypro.ordernum;
-       xdr_free(xdr_ypresp_order, (char *) &ypro);
+       xdr_free((xdrproc_t)xdr_ypresp_order, (char *) &ypro);
        r = ypprot_err(ypro.stat);
 bail:
        _yp_unbind(ysd);