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contrib/apps/ping.c: Fix bug #22530 "api_msg.c's recv_raw() does not consume data", and the ping sample (with LWIP_SOCKET=1, the code did the wrong supposition that lwip_recvfrom returned the IP payload, without the IP header).
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@ -151,15 +151,17 @@ ping_recv(int s)
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char buf[64];
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char buf[64];
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int fromlen, len;
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int fromlen, len;
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struct sockaddr_in from;
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struct sockaddr_in from;
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struct ip_hdr *iphdr;
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struct icmp_echo_hdr *iecho;
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struct icmp_echo_hdr *iecho;
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while((len = lwip_recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr*)&from, (socklen_t*)&fromlen)) > 0) {
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while((len = lwip_recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr*)&from, (socklen_t*)&fromlen)) > 0) {
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if (len >= sizeof(struct icmp_echo_hdr)) {
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if (len >= (sizeof(struct ip_hdr)+sizeof(struct icmp_echo_hdr))) {
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LWIP_DEBUGF( PING_DEBUG, ("ping: recv "));
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LWIP_DEBUGF( PING_DEBUG, ("ping: recv "));
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ip_addr_debug_print(PING_DEBUG, (struct ip_addr *)&(from.sin_addr));
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ip_addr_debug_print(PING_DEBUG, (struct ip_addr *)&(from.sin_addr));
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LWIP_DEBUGF( PING_DEBUG, (" %lu ms\n", (sys_now()-ping_time)));
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LWIP_DEBUGF( PING_DEBUG, (" %lu ms\n", (sys_now()-ping_time)));
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iecho = (struct icmp_echo_hdr *)buf;
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iphdr = (struct ip_hdr *)buf;
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iecho = (struct icmp_echo_hdr *)(buf+(IPH_HL(iphdr) * 4));
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if ((iecho->id == PING_ID) && (iecho->seqno == htons(ping_seq_num))) {
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if ((iecho->id == PING_ID) && (iecho->seqno == htons(ping_seq_num))) {
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/* do some ping result processing */
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/* do some ping result processing */
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PING_RESULT((ICMPH_TYPE(iecho) == ICMP_ER));
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PING_RESULT((ICMPH_TYPE(iecho) == ICMP_ER));
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