feat(coap): Bring coap from esp-idf

Commit ID: 22da5f6d
2025-05-28 05:08:23 +08:00 · 2018-10-10 19:12:55 +08:00
parent 93e9b1c3d3
commit f8b212de5f
123 changed files with 25770 additions and 0 deletions
--- a/components/coap/libcoap/examples/tiny.c
+++ b/components/coap/libcoap/examples/tiny.c
@ -0,0 +1,149 @@
+/* tiny -- tiny sender
+ *
+ * Copyright (C) 2010,2011 Olaf Bergmann <bergmann@tzi.org>
+ *
+ * This file is part of the CoAP library libcoap. Please see
+ * README for terms of use. 
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <limits.h>
+#include <sys/select.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#include "../coap.h"
+
+static coap_tid_t id;
+
+coap_pdu_t *
+make_pdu( unsigned int value ) {
+  coap_pdu_t *pdu;
+  unsigned char enc;
+  static unsigned char buf[20];
+  int len, ls;
+
+  if ( ! ( pdu = coap_new_pdu() ) )
+    return NULL;
+
+  pdu->hdr->type = COAP_MESSAGE_NON;
+  pdu->hdr->code = COAP_REQUEST_POST;
+  pdu->hdr->id = htons(id++);
+
+  enc = COAP_PSEUDOFP_ENCODE_8_4_DOWN(value,ls);
+  coap_add_data( pdu, 1, &enc);
+
+  len = sprintf((char *)buf, "%u", COAP_PSEUDOFP_DECODE_8_4(enc));
+  if ( len > 0 ) {
+    coap_add_data( pdu, len, buf );
+  }
+
+  return pdu;
+}
+
+void
+usage( const char *program ) {
+  const char *p;
+
+  p = strrchr( program, '/' );
+  if ( p )
+    program = ++p;
+
+  fprintf( stderr, "%s -- tiny fake sensor\n"
+	   "(c) 2010 Olaf Bergmann <bergmann@tzi.org>\n\n"
+	   "usage: %s [group address]\n"
+	   "\n\nSends some fake sensor values to specified multicast group\n",
+	   program, program );
+}
+
+coap_context_t *
+get_context(const char *node, const char *port) {
+  coap_context_t *ctx = NULL;  
+  int s;
+  struct addrinfo hints;
+  struct addrinfo *result, *rp;
+
+  memset(&hints, 0, sizeof(struct addrinfo));
+  hints.ai_family = AF_UNSPEC;    /* Allow IPv4 or IPv6 */
+  hints.ai_socktype = SOCK_DGRAM; /* Coap uses UDP */
+  hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST | AI_NUMERICSERV | AI_ALL;
+  
+  s = getaddrinfo(node, port, &hints, &result);
+  if ( s != 0 ) {
+    fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(s));
+    return NULL;
+  } 
+
+  /* iterate through results until success */
+  for (rp = result; rp != NULL; rp = rp->ai_next) {
+    ctx = coap_new_context(rp->ai_addr, rp->ai_addrlen);
+    if (ctx) {
+      /* TODO: output address:port for successful binding */
+      goto finish;
+    }
+  }
+  
+  fprintf(stderr, "no context available for interface '%s'\n", node);
+
+ finish:
+  freeaddrinfo(result);
+  return ctx;
+}
+
+int
+main(int argc, char **argv) {
+  coap_context_t  *ctx;
+  struct timeval tv;
+  coap_pdu_t  *pdu;
+  struct sockaddr_in6 dst;
+  int hops = 16;
+
+  if ( argc > 1 && strncmp(argv[1], "-h", 2) == 0 ) {
+    usage( argv[0] );
+    exit( 1 );
+  }
+
+  ctx = get_context("::", NULL);
+  if ( !ctx )
+    return -1;
+
+  id = rand() & INT_MAX;
+
+  memset(&dst, 0, sizeof(struct sockaddr_in6 ));
+  dst.sin6_family = AF_INET6;
+  inet_pton( AF_INET6, argc > 1 ? argv[1] : "::1", &dst.sin6_addr );
+  dst.sin6_port = htons( COAP_DEFAULT_PORT );
+
+  if ( IN6_IS_ADDR_MULTICAST(&dst.sin6_addr) ) {
+    /* set socket options for multicast */
+
+    if ( setsockopt( ctx->sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
+		     (char *)&hops, sizeof(hops) ) < 0 )
+      perror("setsockopt: IPV6_MULTICAST_HOPS");
+
+  }
+
+  while ( 1 ) {
+
+    if (! (pdu = make_pdu( rand() & 0xfff ) ) )
+      return -1;
+
+    coap_send( ctx, (struct sockaddr *)&dst, sizeof(dst), pdu );
+    coap_delete_pdu(pdu);
+
+    tv.tv_sec = 5; tv.tv_usec = 0;
+
+    select( 0, 0, 0, 0, &tv );
+
+  }
+
+  coap_free_context( ctx );
+
+  return 0;
+}