void redrobd_rc_net_server_thread::shutdown_server(void)
{
// Initiate a controlled server shutdown
m_shutdown_requested = true;
/////////////////////////////////////
// Server socket
/////////////////////////////////////
if (!m_server_closed) {
// Shutdown server socket
if (shutdown_socket(m_server_sd,
true,
true) != SOCKET_SUPPORT_SUCCESS) {
THROW_EXP(REDROBD_INTERNAL_ERROR, REDROBD_SOCKET_OPERATION_FAILED,
"Shutdown (requested) server socket failed in thread %s",
get_name().c_str());
}
// Close server socket
if (close_socket(m_server_sd) != SOCKET_SUPPORT_SUCCESS) {
THROW_EXP(REDROBD_INTERNAL_ERROR, REDROBD_SOCKET_OPERATION_FAILED,
"Close (requested) server socket failed in thread %s",
get_name().c_str());
}
m_server_closed = true;
}
/////////////////////////////////////
// Client socket
/////////////////////////////////////
if (m_client_connected) {
// Shutdown client socket
if (shutdown_socket(m_client_sd,
true,
true) != SOCKET_SUPPORT_SUCCESS) {
THROW_EXP(REDROBD_INTERNAL_ERROR, REDROBD_SOCKET_OPERATION_FAILED,
"Shutdown (requested) client socket failed in thread %s",
get_name().c_str());
}
// Close client socket
if (close_socket(m_client_sd) != SOCKET_SUPPORT_SUCCESS) {
THROW_EXP(REDROBD_INTERNAL_ERROR, REDROBD_SOCKET_OPERATION_FAILED,
"Close (requested) client socket failed in thread %s",
get_name().c_str());
}
}
}
long redrobd_rc_net_server_thread::cleanup(void)
{
try {
redrobd_log_writeln(get_name() + " : cleanup started");
///////////////////////////////////////////////
// If no controlled shutdown was requested,
// proceed with cleanup
///////////////////////////////////////////////
if (!m_shutdown_requested) {
// Shutdown server socket
if (shutdown_socket(m_server_sd,
true,
true) != SOCKET_SUPPORT_SUCCESS) {
THROW_EXP(REDROBD_INTERNAL_ERROR, REDROBD_SOCKET_OPERATION_FAILED,
"Shutdown server socket failed in thread %s",
get_name().c_str());
}
// Close server socket
if (close_socket(m_server_sd) != SOCKET_SUPPORT_SUCCESS) {
THROW_EXP(REDROBD_INTERNAL_ERROR, REDROBD_SOCKET_OPERATION_FAILED,
"Close server socket failed in thread %s",
get_name().c_str());
}
m_server_closed = true;
}
redrobd_log_writeln(get_name() + " : cleanup done");
return THREAD_SUCCESS;
}
catch (excep &exp) {
syslog_error(redrobd_error_syslog_string(exp).c_str());
return THREAD_INTERNAL_ERROR;
}
catch (...) {
syslog_error("redrobd_rc_net_server_thread::cleanup->Unexpected exception");
return THREAD_INTERNAL_ERROR;
}
}
int main(int argc, char**argv){
char *host,*port;
char* messages[5];
messages[0] = "C is quirky flawed and an enormous success - Dennis M. Ritchie";
messages[1] = "The question of whether computers can think is like the question of whether submarines can swim - Edsger W. Dijkstra";
messages[2] = "Typing is no substitute for thinking. - Dartmouth Basic Manual";
messages[3] = "Any C programmer here ? Yeah i got a C in programming class. That counts ? - Unknown";
messages[4] = "The Internet? Is that thing still around? - Homer Simpson";
int num_msgs = 5;
if(argc < 3 || argc > 3){
printf("Incorrect number of args.\n");
print_use_and_exit();
}else{
host = argv[1];
port = argv[2];
}
CONN_INFO* connection = setup_socket(host, port);
if(connection == NULL) print_use_and_exit();
for(int i = 0; i < num_msgs; i++){
MESSAGE*msg = malloc(sizeof(MESSAGE));
msg->buffer = messages[i];
msg->length = strlen(messages[i])+1;
rtp_send_message(connection, msg);
printf("Sent message %i to server...\n", i);
MESSAGE*response = rtp_receive_message(connection);
if(response) printf("Received reponse:\n\t%s\n\n", response->buffer);
else{
perror("Error must have occurred while receiving response. No message returned\n");
free(connection);
exit(EXIT_FAILURE);
}
free(msg);
}
shutdown_socket(connection);
free(connection);
return 0;
}
void redrobd_rc_net_server_thread::handle_clients(void)
{
long rc;
socket_address client_sa;
char client_ip[DOTTED_IP_ADDR_LEN];
ostringstream oss_msg;
while (1) {
oss_msg << "Wait for client on port:" << dec << m_server_port;
redrobd_log_writeln(get_name() + " : " + oss_msg.str());
oss_msg.str("");
// Wait for client to connect
rc = accept_socket(m_server_sd,
&m_client_sd,
&client_sa);
// Check if controlled server shutdown
if ( (rc != SOCKET_SUPPORT_SUCCESS) &&
(m_shutdown_requested) ) {
// This was a controlled shutdown.
// Quit server thread with no error.
break;
}
else if (rc != SOCKET_SUPPORT_SUCCESS) {
// This was not a controlled shutdown.
// Quit server thread with error.
THROW_EXP(REDROBD_INTERNAL_ERROR, REDROBD_SOCKET_OPERATION_FAILED,
"Accept server socket failed in thread %s",
get_name().c_str());
}
else {
m_client_connected = true;
}
// Get address info for connected client
if (to_ip_address(client_sa.net_addr,
client_ip,
DOTTED_IP_ADDR_LEN) != SOCKET_SUPPORT_SUCCESS) {
THROW_EXP(REDROBD_INTERNAL_ERROR, REDROBD_SOCKET_OPERATION_FAILED,
"Client address for server socket failed in thread %s",
get_name().c_str());
}
oss_msg << "Client connected => " << client_ip
<< ", port:" << dec << client_sa.port;
redrobd_log_writeln(get_name() + " : " + oss_msg.str());
oss_msg.str("");
// Handle client commands
bool handle_command = true;
while (handle_command) {
try {
uint16_t client_command;
// Wait for command
recv_client((void *)&client_command,
sizeof(client_command));
ntoh16(&client_command);
// Handle command
if (client_command == CLI_CMD_STEER) {
uint8_t steer_code;
// Get steer code
recv_client((void *)&steer_code,
sizeof(steer_code));
// Update latest steer code
pthread_mutex_lock(&m_steer_code_mutex);
m_steer_code = steer_code;
pthread_mutex_unlock(&m_steer_code_mutex);
}
else if (client_command == CLI_CMD_GET_VOLTAGE) {
uint16_t voltage;
// Reply with latest voltage
pthread_mutex_lock(&m_voltage_mutex);
voltage = m_voltage;
pthread_mutex_unlock(&m_voltage_mutex);
hton16(&voltage);
send_client((void *)&voltage,
sizeof(voltage));
}
else if (client_command == CLI_CMD_CAMERA) {
uint8_t camera_code;
// Get camera code
recv_client((void *)&camera_code,
sizeof(camera_code));
// Update latest camera code
pthread_mutex_lock(&m_camera_code_mutex);
m_camera_code = camera_code;
pthread_mutex_unlock(&m_camera_code_mutex);
}
else if (client_command == CLI_CMD_GET_SYS_STATS) {
RC_NET_SYS_STAT sys_stat;
// Reply with latest system statistics
pthread_mutex_lock(&m_sys_stat_mutex);
memcpy(&sys_stat, &m_sys_stat, sizeof(m_sys_stat));
pthread_mutex_unlock(&m_sys_stat_mutex);
hton32(&sys_stat.mem_used);
hton16(&sys_stat.irq);
hton32(&sys_stat.uptime);
hton32(&sys_stat.cpu_temp);
hton16(&sys_stat.cpu_voltage);
hton16(&sys_stat.cpu_freq);
send_client((void *)&sys_stat,
sizeof(sys_stat));
}
else {
oss_msg << "Unknown client command : 0x"
<< hex << (unsigned)client_command;
redrobd_log_writeln(get_name() + " : " + oss_msg.str());
oss_msg.str("");
handle_command = false;
}
}
catch (...) {
handle_command = false;
}
}
if (m_shutdown_requested) {
// This was a controlled shutdown.
// Quit server thread with no error.
break;
}
// Shutdown client socket
if (shutdown_socket(m_client_sd,
true,
true) != SOCKET_SUPPORT_SUCCESS) {
THROW_EXP(REDROBD_INTERNAL_ERROR, REDROBD_SOCKET_OPERATION_FAILED,
"Shutdown client socket failed in thread %s",
get_name().c_str());
}
// Close client socket
if (close_socket(m_client_sd) != SOCKET_SUPPORT_SUCCESS) {
THROW_EXP(REDROBD_INTERNAL_ERROR, REDROBD_SOCKET_OPERATION_FAILED,
"Close client socket failed in thread %s",
get_name().c_str());
}
m_client_connected = false;
}
}
static int
test(int close_socket)
{
LOGINREC *login;
DBPROCESS *dbproc;
RETCODE ret;
int expected_error = -1;
printf("Starting %s\n", UNITTEST);
dbinit();
dberrhandle(syb_err_handler);
dbmsghandle(syb_msg_handler);
printf("About to logon\n");
login = dblogin();
DBSETLPWD(login, PASSWORD);
DBSETLUSER(login, USER);
DBSETLAPP(login, "t0020");
printf("About to open\n");
dbproc = dbopen(login, SERVER);
dbsetuserdata(dbproc, (BYTE*) &expected_error);
if (strlen(DATABASE))
dbuse(dbproc, DATABASE);
dbloginfree(login);
dbcmd(dbproc, "select * from sysobjects");
printf("dbsqlexec should not hang.\n");
ret = dbsettime(15);
if (ret != SUCCEED) {
fprintf(stderr, "Failed. Error setting timeout.\n");
return 1;
}
if (!shutdown_socket(dbproc)) {
fprintf(stderr, "Error shutting down connection\n");
return 1;
}
if (close_socket)
close(end_socket);
alarm(20);
expected_error = close_socket ? 20006 : 20003;
ret = dbsqlexec(dbproc);
alarm(0);
if (ret != FAIL) {
fprintf(stderr, "Failed. Expected FAIL to be returned.\n");
return 1;
}
dbsetuserdata(dbproc, NULL);
if (!close_socket)
close(end_socket);
dbexit();
printf("dblib okay on %s\n", __FILE__);
return 0;
}
int mcl_shutdown_rw(MCL_SOCKET sockfd)
{
return shutdown_socket(sockfd, SHUT_RDWR);
}
int mcl_shutdown_wr(MCL_SOCKET sockfd)
{
return shutdown_socket(sockfd, SHUT_WR);
}