3 files changed, 63 insertions, 11 deletions

diff --git a/main.c b/main.c
index 939f12d..61b6b16 100644
--- a/main.c
+++ b/main.c
@@ -7,6 +7,27 @@
 
 int debug;
 
+//Channel *ingress;
+//Channel *egress;
+//
+//
+//void
+//threadnetrecv(void *arg)
+//{
+//	
+//}
+//
+//void
+//threadnetppu(void *)
+//{
+//	
+//}
+//
+//void
+//threadnetsend(void *arg)
+//{
+//	
+//}
 
 void
 usage(void)
@@ -40,10 +61,16 @@ threadmain(int argc, char *argv[])
 	fd = dial(addr, nil, nil, nil);
 	if(fd < 0)
 		sysfatal("couldn't establish the connection");
-
-	if(debug)
+	else if(debug)
 		fprint(2, "connection established\n");
 
+//	ingress = chancreate(sizeof(Sipmsg*), 8);
+//	egress = chancreate(sizeof(Sipmsg*), 8);
+//	threadcreate(threadnetrecv, &fd, mainstacksize);
+//	threadcreate(threadnetppu, nil, mainstacksize);
+//	threadcreate(threadnetsend, &fd, mainstacksize);
+//	yield();
+
 	sip = mksip(fd);
 	if(sip == nil)
 		sysfatal("mksip: %r");
diff --git a/readme.md b/readme.md
index e69de29..a70a116 100644
--- a/readme.md
+++ b/readme.md
@@ -0,0 +1,25 @@
+# Catphone
+
+A VoIP softphone operated by a cat.
+
+## Roadmap
+
+- [ ] SIP
+	- [x] REGISTER
+		- [x] MD5
+		- [ ] SHA-2
+	- [ ] INVITE
+- [ ] SDP
+- [ ] RTP/RTCP
+- [ ] Codecs
+	- [ ] G.711
+		- [ ] PCMU (µ-law)
+		- [ ] PCMA (a-law)
+
+## References
+
+- rfc3261 - SIP: Session Initiation Protocol
+- rfc8760 - The Session Initiation Protocol (SIP) Digest Access Authentication Scheme
+- rfc5626 - Managing Client-Initiated Connections in the Session Initiation Protocol (SIP)
+- rfc8866 - SDP: Session Description Protocol
+- rfc3264 - An Offer/Answer Model with the Session Description Protocol (SDP)
diff --git a/sip.c b/sip.c
index 2c25da8..d237dd8 100644
--- a/sip.c
+++ b/sip.c
@@ -318,19 +318,19 @@ getheader(Hdrtab *ht, char *name)
 void
 delheader(Hdrtab *ht, char *name)
 {
-	Hdr **h, *nh;
+	Hdr *h, *nh;
 	uint key;
 
 	key = hash(name);
-	h = &ht->headers[key];
-	while(*h != nil){
-		nh = (*h)->next;
-		if(cistrcmp((*h)->name, name) == 0){
-			free((*h)->name);
-			free((*h)->value);
-			free(*h);
+	h = ht->headers[key];
+	while(h != nil){
+		nh = h->next;
+		if(cistrcmp(h->name, name) == 0){
+			free(h->name);
+			free(h->value);
+			free(h);
 		}
-		*h = nh;
+		h = nh;
 	}
 }