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61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/*
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* Copyright (C) 2016 Kaspar Schleiser <kaspar@schleiser.de>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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#include <arpa/inet.h>
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#include <stdio.h>
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#include "net/af.h"
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#include "net/sock/udp.h"
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#include "net/uhcp.h"
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#include "xtimer.h"
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/**
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* @brief Request prefix from uhcp server
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*
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* Never returns.
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* Calls @c uhcp_handle_prefix() when a prefix or prefix change is received.
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*
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* @param[in] iface interface to request prefix on
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*/
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void uhcp_client(uhcp_iface_t iface)
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{
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sock_udp_t sock;
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sock_udp_ep_t local = { .family=AF_INET6, .port=UHCP_PORT, .netif=iface };
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sock_udp_ep_t req_target = { .family=AF_INET6, .port=UHCP_PORT, .netif=iface };
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sock_udp_ep_t remote;
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inet_pton(AF_INET6, "ff15::abcd", req_target.addr.ipv6);
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/* prepare UHCP header */
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uhcp_req_t req;
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uhcp_hdr_set(&req.hdr, UHCP_REQ);
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req.prefix_len = 64;
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/* create listening socket */
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int res = sock_udp_create(&sock, &local, NULL, 0);
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if (res < 0) {
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puts("uhcp_client(): cannot create listening socket");
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return;
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}
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uint8_t buf[sizeof(uhcp_push_t) + 16];
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while(1) {
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puts("uhcp_client(): sending REQ...");
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sock_udp_send(&sock, &req, sizeof(uhcp_req_t), &req_target);
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res = sock_udp_recv(&sock, buf, sizeof(buf), 10U*US_PER_SEC, &remote);
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if (res > 0) {
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uhcp_handle_udp(buf, res, remote.addr.ipv6, remote.port, iface);
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xtimer_sleep(60);
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}
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else {
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puts("uhcp_client(): no reply received");
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}
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}
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}
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