int
lwes_net_recv_bytes
(struct lwes_net_connection *conn,
LWES_BYTE_P bytes,
size_t len)
{
int ret = 0;
int flags = 0;
if (conn == NULL || bytes == NULL)
{
return -1;
}
if ( (ret = lwes_net_recv_bind (conn)) < 0)
{
return ret;
}
ret = recvfrom (conn->socketfd,
bytes,
len,
flags,
(struct sockaddr *)&(conn->sender_ip_addr),
(socklen_t *)&(conn->sender_ip_socket_size));
return ret;
}
static void test_null_args (void)
{
LWES_BYTE buffer[500];
unsigned int i;
struct lwes_net_connection connection;
/* initialize to nothing */
for (i = 0; i < 500; i++)
buffer[i]=(LWES_BYTE)0;
/* now set 45 bytes */
for (i = 0; i < 45; i++)
{
buffer[i]=(LWES_BYTE)i;
}
/* test NULL connection to all calls */
assert (lwes_net_open (NULL,
(char*)mcast_ip,
(char*)mcast_iface,
(int)mcast_port) == -1);
assert (lwes_net_close (NULL) == -1);
assert (lwes_net_get_ttl (NULL) == -1);
assert (lwes_net_set_ttl (NULL, 5) == -1);
assert (lwes_net_get_sock_fd (NULL) == -1);
assert (lwes_net_send_bytes (NULL, buffer, 45) == -1);
assert (lwes_net_send_bytes (&connection, NULL, 45) == -1);
assert (lwes_net_sendto_bytes (NULL,
(char*)mcast_ip,
(char*)mcast_iface,
(int)mcast_port,
buffer,
45) == -1);
assert (lwes_net_sendto_bytes (&connection,
(char*)mcast_ip,
(char*)mcast_iface,
(int)mcast_port,
NULL,
45) == -1);
assert (lwes_net_recv_bind (NULL) == -1);
assert (lwes_net_recv_bytes (NULL, buffer, 500) == -1);
assert (lwes_net_recv_bytes (&connection, NULL, 500) == -1);
assert (lwes_net_recv_bytes_by (NULL, buffer, 500, 10000) == -1);
assert (lwes_net_recv_bytes_by (&connection, NULL, 500, 10000) == -1);
}
int
lwes_net_recv_bytes_by
(struct lwes_net_connection *conn,
LWES_BYTE_P bytes,
size_t len,
unsigned int timeout_ms)
{
int ret = 0;
int flags = 0;
struct timeval timeout;
fd_set read_sel;
if (conn == NULL || bytes == NULL)
{
return -1;
}
if ((ret = lwes_net_recv_bind (conn)) < 0)
{
return ret;
}
timeout.tv_sec=timeout_ms/1000;
timeout.tv_usec=(timeout_ms%1000)*1000;
FD_ZERO(&read_sel);
FD_SET(conn->socketfd, &read_sel);
/* Just wait once, as we *should* get the packet as a chunk */
ret = select (conn->socketfd+1, &read_sel, NULL, NULL, &timeout);
if (ret <= 0)
{
return -2;
}
ret = recvfrom (conn->socketfd,
bytes,
len,
flags,
(struct sockaddr *)&(conn->sender_ip_addr),
(socklen_t *)&(conn->sender_ip_socket_size));
return ret;
}
static void test_socket_function_failures (void)
{
struct lwes_net_connection connection;
LWES_BYTE buffer[500];
/* socket system call failure */
socket_error = 1;
assert (lwes_net_open (&connection,
(char*)mcast_ip,
(char*)mcast_iface,
(int)mcast_port) == -2);
socket_error = 0;
/* setsockopt of IP_MULTICAST_IF failure */
setsockopt_error_when = IP_MULTICAST_IF;
assert (lwes_net_open (&connection,
(char*)mcast_ip,
(char*)mcast_iface2,
(int)mcast_port) == -3);
setsockopt_error_when = SETSOCKOPT_NO_ERROR;
/* setsockopt of SO_SNDBUF failure */
setsockopt_error_when = SO_SNDBUF;
assert (lwes_net_open (&connection,
(char*)mcast_ip,
(char*)mcast_iface2,
(int)mcast_port) == -4);
setsockopt_error_when = SETSOCKOPT_NO_ERROR;
/* test failures in recv_bind */
/* need a successful open */
assert (lwes_net_open (&connection,
(char*)mcast_ip,
(char*)mcast_iface,
(int)mcast_port) == 0);
/* First setsockopt SO_REUSEADDR failure */
setsockopt_error_when = SO_REUSEADDR;
assert (lwes_net_recv_bind (&connection) == -2);
setsockopt_error_when = SETSOCKOPT_NO_ERROR;
/* Second setsockopt SO_RCVBUF failure */
setsockopt_error_when = SO_RCVBUF;
assert (lwes_net_recv_bind (&connection) == -3);
setsockopt_error_when = SETSOCKOPT_NO_ERROR;
/* Third bind () failure */
bind_error = 1;
assert (lwes_net_recv_bind (&connection) == -4);
bind_error = 0;
/* Fourth IP_ADD_MEMBERSHIP failure */
setsockopt_error_when = IP_ADD_MEMBERSHIP;
assert (lwes_net_recv_bind (&connection) == -5);
setsockopt_error_when = SETSOCKOPT_NO_ERROR;
assert (lwes_net_close (&connection) == 0);
/* successful so we can test close failure */
assert (lwes_net_open (&connection,
(char*)mcast_ip,
(char*)mcast_iface,
(int)mcast_port) == 0);
assert (lwes_net_recv_bind (&connection) == 0);
setsockopt_error_when = IP_DROP_MEMBERSHIP;
assert (lwes_net_close (&connection) == -2);
setsockopt_error_when = SETSOCKOPT_NO_ERROR;
assert (lwes_net_close (&connection) == 0);
/* Also want to test bind failures in recv functions */
assert (lwes_net_open (&connection,
(char*)mcast_ip,
(char*)mcast_iface,
(int)mcast_port) == 0);
bind_error = 1;
assert (lwes_net_recv_bytes (&connection, buffer, 500) == -4);
assert (lwes_net_recv_bytes_by (&connection, buffer, 500, 10000) == -4);
bind_error = 0;
assert (lwes_net_close (&connection) == 0);
}