--- /n/sources/plan9/sys/src/cmd/webfs/io.c	Fri Jan 16 06:00:04 2009
+++ /sys/src/cmd/webfs/io.c	Fri Jun 19 00:00:00 2026
@@ -45,11 +45,12 @@ ioprint(Ioproc *io, int fd, char *fmt, ...)
 static long
 _iotlsdial(va_list *arg)
 {
-	char *addr, *local, *dir;
+	char *addr, *server, *local, *dir;
 	int *cfdp, fd, tfd, usetls;
 	TLSconn conn;
 
 	addr = va_arg(*arg, char*);
+	server = va_arg(*arg, char*);
 	local = va_arg(*arg, char*);
 	dir = va_arg(*arg, char*);
 	cfdp = va_arg(*arg, int*);
@@ -62,6 +63,7 @@ _iotlsdial(va_list *arg)
 		return fd;
 
 	memset(&conn, 0, sizeof conn);
+	conn.serverName = server;
 	/* does no good, so far anyway */
 	// conn.chain = readcertchain("/sys/lib/ssl/vsignss.pem");
 
@@ -78,7 +80,7 @@ _iotlsdial(va_list *arg)
 }
 
 int
-iotlsdial(Ioproc *io, char *addr, char *local, char *dir, int *cfdp, int usetls)
+iotlsdial(Ioproc *io, char *addr, char *server, char *local, char *dir, int *cfdp, int usetls)
 {
-	return iocall(io, _iotlsdial, addr, local, dir, cfdp, usetls);
+	return iocall(io, _iotlsdial, addr, server, local, dir, cfdp, usetls);
 }
--- /n/sources/plan9/sys/src/cmd/webfs/fns.h	Thu Sep 26 23:01:17 2002
+++ /sys/src/cmd/webfs/fns.h	Fri Jun 19 00:00:00 2026
@@ -34,7 +34,7 @@ int		httpread(Client*, Req*);
 void		httpclose(Client*);
 
 /* io.c */
-int		iotlsdial(Ioproc*, char*, char*, char*, int*, int);
+int		iotlsdial(Ioproc*, char*, char*, char*, char*, int*, int);
 int		ioprint(Ioproc*, int, char*, ...);
 #pragma varargck argpos ioprint 3
 
--- /n/sources/plan9/sys/src/cmd/webfs/http.c	Fri Jul 16 11:00:06 2010
+++ /sys/src/cmd/webfs/http.c	Fri Jun 19 00:00:00 2026
@@ -286,7 +286,7 @@ httpopen(Client *c, Url *url)
 		fprint(2, "dial %s\n", hs->netaddr);
 		fprint(2, "dial port: %s\n", url->port);
 	}
-	fd = iotlsdial(io, hs->netaddr, 0, 0, 0, url->ischeme==UShttps);
+	fd = iotlsdial(io, hs->netaddr, url->host, 0, 0, 0, url->ischeme==UShttps);
 	if(fd < 0){
 	Error:
 		if(httpdebug)
@@ -312,6 +312,8 @@ httpopen(Client *c, Url *url)
 		fprint(2, "<- User-Agent: %s\n", c->ctl.useragent);
 	if(c->ctl.useragent)
 		ioprint(io, fd, "User-Agent: %s\r\n", c->ctl.useragent);
+	if(c->hdr)
+		ioprint(io, fd, "%s", c->hdr);
 	if(c->ctl.sendcookies){
 		/* should we use url->page here?  sometimes it is nil. */
 		cookies = httpcookies(url->host, url->http.page_spec,
@@ -323,10 +325,12 @@ httpopen(Client *c, Url *url)
 		free(cookies);
 	}
 	if(c->havepostbody){
-		ioprint(io, fd, "Content-type: %s\r\n", PostContentType);
+		if(c->hdr == nil)
+			ioprint(io, fd, "Content-type: %s\r\n", PostContentType);
 		ioprint(io, fd, "Content-length: %ud\r\n", c->npostbody);
 		if(httpdebug){
-			fprint(2, "<- Content-type: %s\n", PostContentType);
+			if(c->hdr == nil)
+				fprint(2, "<- Content-type: %s\n", PostContentType);
 			fprint(2, "<- Content-length: %ud\n", c->npostbody);
 		}
 	}
--- /n/sources/plan9/sys/src/cmd/webfs/dat.h	Fri Mar 18 10:00:08 2011
+++ /sys/src/cmd/webfs/dat.h	Fri Jun 19 00:00:00 2026
@@ -33,6 +33,7 @@ struct Client
 	char *redirect;
 	char *authenticate;
 	char *ext;
+	char *hdr;
 	int npostbody;
 	int havepostbody;
 	int iobusy;
--- /n/sources/plan9/sys/src/cmd/webfs/client.c	Tue Feb 10 06:00:03 2009
+++ /sys/src/cmd/webfs/client.c	Fri Jun 19 00:00:00 2026
@@ -57,6 +57,8 @@ closeclient(Client *c)
 		c->redirect = nil;
 		free(c->authenticate);
 		c->authenticate = nil;
+		free(c->hdr);
+		c->hdr = nil;
 		c->npostbody = 0;
 		c->havepostbody = 0;
 		c->bodyopened = 0;
@@ -322,7 +324,15 @@ clientctlwrite(Req *r, Client *c, char *cmd, char *arg)
 {
 	void *a;
 	Ctab *t;
+	char *p;
 
+	if(strcmp(cmd, "headers") == 0){
+		p = smprint("%s%s\r\n", c->hdr ? c->hdr : "", arg);
+		free(c->hdr);
+		c->hdr = p;
+		respond(r, nil);
+		return 1;
+	}
 	if((t = findcmd(cmd, clienttab, nelem(clienttab))) == nil)
 		return 0;
 	a = (void*)((uintptr)c+(uintptr)t->offset);