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+/*
+ * $LynxId: HTTCP.h,v 1.27 2018/05/16 19:48:16 tom Exp $
+ *
+ * /Net/dxcern/userd/timbl/hypertext/WWW/Library/src/HTTCP.html
+ * GENERIC TCP/IP COMMUNICATION
+ *
+ * This module has the common code for handling TCP/IP connections etc.
+ */
+#ifndef HTTCP_H
+#define HTTCP_H
+
+#ifndef HTUTILS_H
+#include <HTUtils.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+/* Produce a string for an internet address
+ * ---------------------------------------
+ *
+ * On exit:
+ * returns a pointer to a static string which must be copied if
+ * it is to be kept.
+ */
+ extern const char *HTInetString(LY_SOCKADDR * mysin);
+
+/* Encode INET status (as in sys/errno.h) inet_status()
+ * ------------------
+ *
+ * On entry:
+ * where gives a description of what caused the error
+ * global errno gives the error number in the unix way.
+ *
+ * On return:
+ * returns a negative status in the unix way.
+ */
+ extern int HTInetStatus(const char *where);
+
+/* Publicly accessible variables
+*/
+/* extern struct sockaddr_in HTHostAddress; */
+ /* The internet address of the host */
+ /* Valid after call to HTHostName() */
+
+/* Parse a cardinal value parse_cardinal()
+ * ----------------------
+ *
+ * On entry:
+ * *pp points to first character to be interpreted, terminated by
+ * non 0..9 character.
+ * *pstatus points to status already valid,
+ * maxvalue gives the largest allowable value.
+ *
+ * On exit:
+ * *pp points to first unread character,
+ * *pstatus points to status updated iff bad
+ */
+
+ extern unsigned int HTCardinal(int *pstatus,
+ char **pp,
+ unsigned int max_value);
+
+/* Check whether string is a valid Internet hostname
+ * -------------------------------------------------
+ */
+
+ extern BOOL valid_hostname(char *name);
+
+/* Resolve an internet hostname, like gethostbyname
+ * ------------------------------------------------
+ *
+ * On entry,
+ * str points to the given host name, not numeric address,
+ * without colon or port number.
+ *
+ * On exit,
+ * returns a pointer to a struct hostent in static storage,
+ * or NULL in case of error or user interruption.
+ *
+ * The interface is intended to be the same as for gethostbyname(),
+ * but additional status is returned in lynx_nsl_status.
+ */
+ extern int lynx_nsl_status;
+
+ extern BOOLEAN LYCheckHostByName(char *host);
+
+#ifdef INET6
+ extern BOOLEAN HTCheckAddrInfo(const char *str, const int defport);
+#endif
+
+/* Get Name of This Machine
+ * ------------------------
+ *
+ */
+
+ extern const char *HTHostName(void);
+
+ extern int HTDoConnect(const char *url,
+ const char *protocol,
+ int default_port,
+ int *s);
+
+ extern int HTDoRead(int fildes,
+ void *buf,
+ unsigned nbyte);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* HTTCP_H */