#if 0/*if use putOptCmd*/#include <arpa/telnet.h>/*->telopt.h (IAC)*/#include "sockbuf.h"	/*->telopt.h (putSock1)*/#endif/* requirements for a telnet option */typedef enum {    TOR_MUSTNOT,	/* disable the opt or disconnect */    TOR_BETTERNOT,	/* disable the opt or enable unwillingly */    TOR_NEUTRAL,	/* modemu doesn't initiate any action for the opt.			   {en,dis}able the opt as the peer requests. */    TOR_BETTER,		/* enable the opt or disable unwillingly */    TOR_MUST		/* enable the opt or disconnect */} TelOptReq;typedef struct {    TelOptReq req;	/* requirement for the opt */    int state;		/* current state (enabled:1 or disabled:0) */    int pending;	/* state is pending (requested but no reply yet) */} TelOptState;typedef struct {    int opt;		/* an telnet option. TELOPT_XXX */    TelOptState local;	/* local state of the option */    TelOptState remote;	/* remote state of the option */} TelOptStates;struct {    int binsend;	/* local binary opt is enabled */    int binrecv;	/* remote binary opt is enabled */    int sgasend;	/* local SGA opt is enabled (char-at-a-time mode) */    int sentReqs;	/* have sent option requests to the peer			   or skip sending them */    TelOptStates **stTab; /* = stTab[] in telopt.c */} telOpt;#define putOptCmd(s,c) { putSock1(IAC); putSock1(s); putSock1(c); }voidtelOptReset(void);voidtelOptInit(void);voidtelOptPrintCmd(const char *str, int cmd);voidtelOptSendReqs(void);inttelOptHandle(int cmd, int opt);inttelOptSBHandle(int opt);