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
)
47 static void raw_sent(Plug plug
, int bufsize
)
49 raw_bufsize
= bufsize
;
53 * Called to set up the raw connection.
55 * Returns an error message, or NULL on success.
57 * Also places the canonical host name into `realhost'. It must be
58 * freed by the caller.
60 static char *raw_init(char *host
, int port
, char **realhost
, int nodelay
)
62 static struct plug_function_table fn_table
= {
66 }, *fn_table_ptr
= &fn_table
;
76 sprintf(buf
, "Looking up host \"%.170s\"", host
);
79 addr
= sk_namelookup(host
, realhost
);
80 if ((err
= sk_addr_error(addr
)))
84 port
= 23; /* default telnet port */
90 char buf
[200], addrbuf
[100];
91 sk_getaddr(addr
, addrbuf
, 100);
92 sprintf(buf
, "Connecting to %.100s port %d", addrbuf
, port
);
95 s
= sk_new(addr
, port
, 0, 1, nodelay
, &fn_table_ptr
);
96 if ((err
= sk_socket_error(s
)))
105 * Called to send data down the raw connection.
107 static int raw_send(char *buf
, int len
)
112 raw_bufsize
= sk_write(s
, buf
, len
);
118 * Called to query the current socket sendability status.
120 static int raw_sendbuffer(void)
126 * Called to set the size of the window
128 static void raw_size(void)
135 * Send raw special codes.
137 static void raw_special(Telnet_Special code
)
143 static Socket
raw_socket(void)
148 static int raw_sendok(void)
153 static void raw_unthrottle(int backlog
)
155 sk_set_frozen(s
, backlog
> RAW_MAX_BACKLOG
);
158 static int raw_ldisc(int option
)
160 if (option
== LD_EDIT
|| option
== LD_ECHO
)
165 Backend raw_backend
= {