#define TRUE 1
#endif
+#define RAW_MAX_BACKLOG 4096
+
static Socket s = NULL;
+static int raw_bufsize;
static void raw_size(void);
-static int sb_opt, sb_len;
-static char *sb_buf = NULL;
-static int sb_size = 0;
-#define SB_DELTA 1024
-
-static void c_write (char *buf, int len) {
- from_backend(0, buf, len);
+static void c_write(char *buf, int len)
+{
+ int backlog = from_backend(0, buf, len);
+ sk_set_frozen(s, backlog > RAW_MAX_BACKLOG);
}
-static int raw_receive (Socket skt, int urgent, char *data, int len) {
- if (urgent==3) {
- /* A socket error has occurred. */
+static int raw_closing(Plug plug, char *error_msg, int error_code,
+ int calling_back)
+{
+ if (s) {
sk_close(s);
s = NULL;
- connection_fatal(data);
- len = 0;
- return 0;
- } else if (!len) {
- /* Connection has closed. */
- sk_close(s);
- s = NULL;
- return 0;
}
+ if (error_msg) {
+ /* A socket error has occurred. */
+ logevent(error_msg);
+ connection_fatal("%s", error_msg);
+ } /* Otherwise, the remote side closed the connection normally. */
+ return 0;
+}
+
+static int raw_receive(Plug plug, int urgent, char *data, int len)
+{
c_write(data, len);
return 1;
}
+static void raw_sent(Plug plug, int bufsize)
+{
+ raw_bufsize = bufsize;
+}
+
/*
* Called to set up the raw connection.
*
* Returns an error message, or NULL on success.
*
- * Also places the canonical host name into `realhost'.
+ * Also places the canonical host name into `realhost'. It must be
+ * freed by the caller.
*/
-static char *raw_init (char *host, int port, char **realhost) {
+static char *raw_init(char *host, int port, char **realhost, int nodelay)
+{
+ static struct plug_function_table fn_table = {
+ raw_closing,
+ raw_receive,
+ raw_sent
+ }, *fn_table_ptr = &fn_table;
+
SockAddr addr;
char *err;
/*
* Try to find host.
*/
+ {
+ char buf[200];
+ sprintf(buf, "Looking up host \"%.170s\"", host);
+ logevent(buf);
+ }
addr = sk_namelookup(host, realhost);
- if ( (err = sk_addr_error(addr)) )
+ if ((err = sk_addr_error(addr)))
return err;
if (port < 0)
/*
* Open socket.
*/
- s = sk_new(addr, port, 0, raw_receive);
- if ( (err = sk_socket_error(s)) )
+ {
+ char buf[200], addrbuf[100];
+ sk_getaddr(addr, addrbuf, 100);
+ sprintf(buf, "Connecting to %.100s port %d", addrbuf, port);
+ logevent(buf);
+ }
+ s = new_connection(addr, *realhost, port, 0, 1, nodelay, &fn_table_ptr);
+ if ((err = sk_socket_error(s)))
return err;
sk_addr_free(addr);
/*
* Called to send data down the raw connection.
*/
-static void raw_send (char *buf, int len) {
-
+static int raw_send(char *buf, int len)
+{
if (s == NULL)
- return;
+ return 0;
- sk_write(s, buf, len);
+ raw_bufsize = sk_write(s, buf, len);
+
+ return raw_bufsize;
+}
+
+/*
+ * Called to query the current socket sendability status.
+ */
+static int raw_sendbuffer(void)
+{
+ return raw_bufsize;
}
/*
* Called to set the size of the window
*/
-static void raw_size(void) {
+static void raw_size(void)
+{
/* Do nothing! */
return;
}
/*
* Send raw special codes.
*/
-static void raw_special (Telnet_Special code) {
+static void raw_special(Telnet_Special code)
+{
/* Do nothing! */
return;
}
-static Socket raw_socket(void) { return s; }
+static Socket raw_socket(void)
+{
+ return s;
+}
-static int raw_sendok(void) { return 1; }
+static int raw_sendok(void)
+{
+ return 1;
+}
+
+static void raw_unthrottle(int backlog)
+{
+ sk_set_frozen(s, backlog > RAW_MAX_BACKLOG);
+}
-static int raw_ldisc(int option) {
+static int raw_ldisc(int option)
+{
if (option == LD_EDIT || option == LD_ECHO)
- return 1;
+ return 1;
+ return 0;
+}
+
+static int raw_exitcode(void)
+{
+ /* Exit codes are a meaningless concept in the Raw protocol */
return 0;
}
Backend raw_backend = {
raw_init,
raw_send,
+ raw_sendbuffer,
raw_size,
raw_special,
raw_socket,
+ raw_exitcode,
raw_sendok,
raw_ldisc,
+ raw_unthrottle,
1
};