#include <u.h>#include <libc.h>#include <bin.h>#include <httpd.h> /* * read in some header lines, either one or all of them. * copy results into header log buffer. */inthgethead(HConnect *c, int many){	Hio *hin;	char *s, *p, *pp;	int n; 	hin = &c->hin;	for(;;){		s = (char*)hin->pos;		pp = s;		while(p = memchr(pp, '\n', (char*)hin->stop - pp)){			if(!many || p == pp || (p == pp + 1 && *pp == '\r')){				pp = p + 1;				break;			}			pp = p + 1;		}		hin->pos = (uchar*)pp;		n = pp - s;		if(c->hstop + n > &c->header[HBufSize])			return -1;		memmove(c->hstop, s, n);		c->hstop += n;		*c->hstop = '\0';		if(p != nil)			return 0;		if(hreadbuf(hin, hin->pos) == nil || hin->state == Hend)			return -1;	}}