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net/tcp: Return -EINVAL if bind is called more than once #10022

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merged 1 commit into from Aug 3, 2023
Merged

net/tcp: Return -EINVAL if bind is called more than once #10022

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12 changes: 12 additions & 0 deletions net/tcp/tcp_conn.c
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Expand Up @@ -325,6 +325,12 @@ static inline int tcp_ipv4_bind(FAR struct tcp_conn_s *conn,

net_lock();

if (conn->lport != 0)
{
net_unlock();
return -EINVAL;
}

/* Verify or select a local port (network byte order) */

port = tcp_selectport(PF_INET,
Expand Down Expand Up @@ -390,6 +396,12 @@ static inline int tcp_ipv6_bind(FAR struct tcp_conn_s *conn,

net_lock();

if (conn->lport != 0)
{
net_unlock();
return -EINVAL;
}

/* Verify or select a local port (network byte order) */

/* The port number must be unique for this address binding */
Expand Down