core: kemi - added KSR.hsr.rmappend(hrm, hadd)

- helper function to remove and append headers in a single operation

src/core/kemi.c

@@ -1956,6 +1956,20 @@ static int sr_kemi_hdr_insert_before(sip_msg_t *msg, str *txt, str *hname)
 	return 1;
 }
 
+/**
+ *
+ */
+static int sr_kemi_hdr_rmappend(sip_msg_t *msg, str *hrm, str *hadd)
+{
+	int ret;
+
+	ret = sr_kemi_hdr_remove(msg, hrm);
+	if(ret<0) {
+		return ret;
+	}
+	return sr_kemi_hdr_append(msg, hadd);
+}
+
 /**
  *
  */
@@ -2089,6 +2103,11 @@ static sr_kemi_t _sr_kemi_hdr[] = {
 		{ SR_KEMIP_STR, SR_KEMIP_NONE, SR_KEMIP_NONE,
 			SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE }
 	},
+	{ str_init("hdr"), str_init("rmappend"),
+		SR_KEMIP_INT, sr_kemi_hdr_rmappend,
+		{ SR_KEMIP_STR, SR_KEMIP_STR, SR_KEMIP_NONE,
+			SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE }
+	},
 	{ str_init("hdr"), str_init("is_present"),
 		SR_KEMIP_INT, sr_kemi_hdr_is_present,
 		{ SR_KEMIP_STR, SR_KEMIP_NONE, SR_KEMIP_NONE,