Hello, The following portion of code in set_contact() leaks the memory allocated against the regc pool when re-registering with the same contact. 359 /* Process new contacts */ 360 for (i=0; i<contact_cnt; ++i) 361 { 362 pjsip_contact_hdr *hdr; 363 pj_str_t tmp; 364 365 pj_strdup_with_null(regc->pool, &tmp, &contact[i]); 366 367 hdr = (pjsip_contact_hdr*) 368 pjsip_parse_hdr(regc->pool, &CONTACT, tmp.ptr, tmp.slen, NULL); 369 if (hdr == NULL) { 370 PJ_LOG(4,(THIS_FILE, "Invalid Contact: \"%.*s\"", 371 (int)tmp.slen, tmp.ptr)); 372 return PJSIP_EINVALIDURI; 373 } 374 375 /* Find the new contact in old contact list. If found, remove 376 * the old header from the old header list. 377 */ 378 h = regc->removed_contact_hdr_list.next; 379 while (h != &regc->removed_contact_hdr_list) { 380 int rc; 381 382 rc = pjsip_uri_cmp(PJSIP_URI_IN_CONTACT_HDR, 383 h->uri, hdr->uri); 384 if (rc == 0) { 385 /* Match */ 386 pj_list_erase(h); 387 break; 388 } 389 390 h = h->next; 391 } 392 Memory is allocated against the regc pool with the pj_strdup_with_null() call and when pjsip_parse_hdr() is called. In the case of the same contact pj_list_erase() is invoked to remove the duplicate header from the contact list however this function merely drops the header entry from the list and does not free the memory allocated against the pool. Is this a known problem? Please advise if there is a correction or work around. Cheers