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Function cb_telnet_inchar_fnc

Application callback to process characters received from a Telnet client.

typedef struct _telnet_context { 
   int  tns_socket; 
   int  tns_options[7]; 
   char tns_buf[80]; 
   int  tns_bp; 
} telnet_context; 

int cb_telnet_inchar_fnc(struct _telnet_context * pcontext, BYTE c);

Parameters

pcontext

Pointer to the context structure of the current session.

c

Character received.

return value

Returns 0 if successful, otherwise SOCKET_ERROR. Return SOCKET_ERROR to terminate/disconnect the session.

This callback is called by the Telnet Server each time a character has been received. The application can use it to parse incoming commands and to send data back to the client. Usually, character c should be echoed back to the client. pcontext->tns_socket can be used to send data to the client. pcontext->tns_bp and pcontext->tns_buf are free for application use; for example, to maintain state information of the current session.

Please refer to demo program Telnets for a complete example.

Telnet Server

Function cb_telnet_init_fnc