14 #define RAW_MAX_BACKLOG 4096
16 static Socket s
= NULL
;
17 static int raw_bufsize
;
19 static void raw_size(void);
21 static void c_write(char *buf
, int len
)
23 int backlog
= from_backend(0, buf
, len
);
24 sk_set_frozen(s
, backlog
> RAW_MAX_BACKLOG
);
27 static int raw_closing(Plug plug
, char *error_msg
, int error_code
,
35 /* A socket error has occurred. */
36 connection_fatal(error_msg
);
37 } /* Otherwise, the remote side closed the connection normally. */
41 static int raw_receive(Plug plug
, int urgent
, char *data
, int len
)
48 * Called to set up the raw connection.
50 * Returns an error message, or NULL on success.
52 * Also places the canonical host name into `realhost'. It must be
53 * freed by the caller.
55 static char *raw_init(char *host
, int port
, char **realhost
)
57 static struct plug_function_table fn_table
= {
60 }, *fn_table_ptr
= &fn_table
;
68 addr
= sk_namelookup(host
, realhost
);
69 if ((err
= sk_addr_error(addr
)))
73 port
= 23; /* default telnet port */
78 s
= sk_new(addr
, port
, 0, 1, &fn_table_ptr
);
79 if ((err
= sk_socket_error(s
)))
88 * Called to send data down the raw connection.
90 static int raw_send(char *buf
, int len
)
95 raw_bufsize
= sk_write(s
, buf
, len
);
101 * Called to query the current socket sendability status.
103 static int raw_sendbuffer(void)
109 * Called to set the size of the window
111 static void raw_size(void)
118 * Send raw special codes.
120 static void raw_special(Telnet_Special code
)
126 static Socket
raw_socket(void)
131 static int raw_sendok(void)
136 static void raw_unthrottle(int backlog
)
138 sk_set_frozen(s
, backlog
> RAW_MAX_BACKLOG
);
141 static int raw_ldisc(int option
)
143 if (option
== LD_EDIT
|| option
== LD_ECHO
)
148 Backend raw_backend
= {