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handling new clients in a separate thread

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This commit is contained in:
Igor Socec 2014-04-06 18:34:56 +02:00
parent 86f0bc612f
commit 604665ee05
4 changed files with 99 additions and 95 deletions
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45
moxerver.h
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@ -21,34 +21,35 @@
/* Structures used for communication parameters. */
struct server_t {
int socket; /* server socket */
struct sockaddr_in address; /* server address information */
int socket; /* server socket */
struct sockaddr_in address; /* server address information */
unsigned int port; /* server port in host byte order, practical reference */
};
struct client_t {
int socket; /* client socket */
struct sockaddr_in address; /* client address information */
char ip_string[INET_ADDRSTRLEN]; /* client IP address as a string */
time_t last_active; /* time of client's last activity in seconds from Epoch */
char username[USERNAME_LEN]; /* username for human identification */
char data[DATABUF_LEN]; /* buffer for data received from client */
int socket; /* client socket */
struct sockaddr_in address; /* client address information */
char ip_string[INET_ADDRSTRLEN]; /* client IP address as a string */
time_t last_active; /* time of client's last activity in seconds from Epoch */
char username[USERNAME_LEN]; /* username for human identification */
char data[DATABUF_LEN]; /* buffer for data received from client */
};
struct tty_t {
int fd; /* tty file descriptor */
int fd; /* tty file descriptor */
struct termios ttysetdef; /* default tty termios settings */
struct termios ttyset; /* tty termios settings */
char path[DEV_PATH]; /* tty device path */
char data[DATABUF_LEN]; /* buffer for data received from tty */
char path[DEV_PATH]; /* tty device path */
char data[DATABUF_LEN]; /* buffer for data received from tty */
};
/* Global variables used throughout the application. */
int debug_messages; /* if > 0 debug messages will be printed */
struct server_t server; /* main server structure */
struct client_t client; /* connected client structure */ //TODO working with only 1 client, this can be expanded into a list
struct tty_t tty_dev; /* connected tty device */
int debug_messages; /* if > 0 debug messages will be printed */
struct server_t server; /* main server structure */
struct client_t client; /* connected client structure */ //TODO working with only 1 client, this can be expanded into a list
struct client_t new_client; /* client structure for new client request */
struct tty_t tty_dev; /* connected tty device */
/* Global functions used throughout the application. */
@ -91,15 +92,17 @@ int server_close(struct server_t *server);
int server_accept(struct server_t *server, struct client_t *accepted_client);
/**
* Asks new incoming client connection if current client needs to be dropped.
* If current client doesn't need to be dropped then new client is rejected.
* Thread function handling new client connections.
* If there is no connected client then first client request is accepted.
* If there is a connected client then new client is asked if connected client should be dropped.
*
* Returns:
* - positive value if current client was dropped
* - 0 if new client was rejected
* - negative value if error occurred
* Return value from this thread function is not used.
* Function handles global client variables:
* - client structure is reset if new client is available to connect to
* - new_client structure stores information about the client to connect to
*/
int server_drop(struct server_t *server, struct client_t *client);
void* server_new_client_thread(void *args);
/* Functions handling communication with clients. */