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/* tcp.h: header file for NT/Unix TCP access layer */
#ifndef TCP_H
#define TCP_H 1
#ifdef _WIN32
#include <windows.h>
#else
#include <errno.h>
/* include this for htons() and its siblings */
#include <netinet/in.h>
#endif
/* Name of the current machine, as in tuvok.intellivoice.com */
extern char tcp_thisMachineName[];
/* IP address of the current machine, packed and displayable. */
extern char tcp_thisMachineDots[]; /* "192.128.25.1" */
extern long tcp_thisMachineIP; /* pack the above string into a long */
extern char tcp_farMachineDots[]; /* like the above, but for the far machine */
extern long tcp_farMachineIP;
extern short tcp_farMachinePort;
/* Set up the TCP stack and initialize the above variables */
/* Returns 0 (ok) or -1 (with errno set) */
int tcp_init();
/* routines to convert between names and IP addresses */
int tcp_isDots(const char *s);
long tcp_name_ip(const char *name);
char *tcp_ip_name(long packed_ip);
char *tcp_name_dots(const char *name);
char *tcp_dots_name(const char *displayable_ip);
char *tcp_ip_dots(long packed_ip);
long tcp_dots_ip(const char *displayable_ip);
/* Connect to a far machine. Use one of the above routines to
* convert to the packed IP address of the far machine.
* Returns the socket handle, or -1 if there was a problem. */
int tcp_connect(long far_ip, int far_portnum, int timeout);
/* Listen for an incoming connection.
* We expect only one such connection at a time.
* Returns the socket handle, or -1 if there was a problem. */
int tcp_listen(int portnum, int once);
void tcp_unlisten(void);
/* Read and write data on the socket.
* returns the number of bytes read, or -1 if there was a problem. */
int tcp_read(int handle, char *buf, int buflen);
int tcp_readFully(int handle, char *buf, int buflen);
int tcp_write(int handle, const char *buf, int buflen);
/* Close the socket */
void tcp_close(int handle);
#endif
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