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tcp/udp_connect: If the remote addr is ANY, change it to LOOPBACK

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Behavior alignment to Linux

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
This commit is contained in:
zhanghongyu
2022-11-17 19:53:53 +08:00
committed by archer
parent 85a8249821
commit 3e4e416786
2 changed files with 49 additions and 6 deletions
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net/tcp/tcp_conn.c
+24 -4
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@@ -1240,9 +1240,18 @@ int tcp_connect(FAR struct tcp_conn_s *conn, FAR const struct sockaddr *addr)
conn->mss = MIN_IPv4_TCP_INITIAL_MSS;
conn->rport = inaddr->sin_port;
/* The sockaddr address is 32-bits in network order. */
/* The sockaddr address is 32-bits in network order.
* Note: 0.0.0.0 is mapped to 127.0.0.1 by convention.
*/
net_ipv4addr_copy(conn->u.ipv4.raddr, inaddr->sin_addr.s_addr);
if (inaddr->sin_addr.s_addr == INADDR_ANY)
{
net_ipv4addr_copy(conn->u.ipv4.raddr, HTONL(INADDR_LOOPBACK));
}
else
{
net_ipv4addr_copy(conn->u.ipv4.raddr, inaddr->sin_addr.s_addr);
}
/* Find the device that can receive packets on the network associated
* with this remote address.
@@ -1265,9 +1274,20 @@ int tcp_connect(FAR struct tcp_conn_s *conn, FAR const struct sockaddr *addr)
conn->mss = MIN_IPv6_TCP_INITIAL_MSS;
conn->rport = inaddr->sin6_port;
/* The sockaddr address is 128-bits in network order. */
/* The sockaddr address is 128-bits in network order.
* Note: ::0 is mapped to ::1 by convention.
*/
net_ipv6addr_copy(conn->u.ipv6.raddr, inaddr->sin6_addr.s6_addr16);
if (net_ipv6addr_cmp(addr, g_ipv6_unspecaddr))
{
struct in6_addr loopback_sin6_addr = IN6ADDR_LOOPBACK_INIT;
net_ipv6addr_copy(conn->u.ipv6.raddr,
loopback_sin6_addr.s6_addr16);
}
else
{
net_ipv6addr_copy(conn->u.ipv6.raddr, inaddr->sin6_addr.s6_addr16);
}
/* Find the device that can receive packets on the network associated
* with this local address.