Release 2.15.0

- [FEATURE] QUIC and HTTP/3 Internet Draft 28 support.
- [BUGFIX] Ignore Retry packets after other packets are decrypted
  successfully.
- [BUGFIX] Transport parameter decoding: CID no longer has 4-byte
  length minimum.
- http_client: fix and optimize lsxpack_header allocator.
- Drop support for Internet Draft 25.

bin/http_client.c

@@ -220,6 +220,7 @@ struct lsquic_conn_ctx {
 struct hset_elem
 {
     STAILQ_ENTRY(hset_elem)     next;
+    size_t                      nalloc;
     struct lsxpack_header       xhdr;
 };
 
@@ -999,16 +1000,19 @@ hset_prepare_decode (void *hset_p, struct lsxpack_header *xhdr,
         }
         STAILQ_INSERT_TAIL(hset, el, next);
         lsxpack_header_prepare_decode(&el->xhdr, buf, 0, req_space);
+        el->nalloc = req_space;
     }
     else
     {
         el = (struct hset_elem *) ((char *) xhdr
                                         - offsetof(struct hset_elem, xhdr));
-        if (req_space <= xhdr->val_len)
+        if (req_space <= el->nalloc)
         {
             LSQ_ERROR("requested space is smaller than already allocated");
             return NULL;
         }
+        if (req_space < el->nalloc * 2)
+            req_space = el->nalloc * 2;
         buf = realloc(el->xhdr.buf, req_space);
         if (!buf)
         {
@@ -1017,6 +1021,7 @@ hset_prepare_decode (void *hset_p, struct lsxpack_header *xhdr,
         }
         el->xhdr.buf = buf;
         el->xhdr.val_len = req_space;
+        el->nalloc = req_space;
     }
 
     return &el->xhdr;

bin/test_cert.c

@@ -21,7 +21,7 @@ static int
 select_alpn (SSL *ssl, const unsigned char **out, unsigned char *outlen,
                     const unsigned char *in, unsigned int inlen, void *arg)
 {
-    const unsigned char alpn[] = "\x5h3-25\x5h3-27";
+    const unsigned char alpn[] = "\x5h3-27\x5h3-28";
     int r;
 
     r = SSL_select_next_proto((unsigned char **) out, outlen, in, inlen,

bin/test_common.c

@@ -1915,11 +1915,6 @@ set_engine_option (struct lsquic_engine_settings *settings,
             settings->es_qpack_dec_max_size = atoi(val);
             return 0;
         }
-        if (0 == strncmp(name, "max_packet_size_rx", 18))
-        {
-            settings->es_max_packet_size_rx = atoi(val);
-            return 0;
-        }
         break;
     case 20:
         if (0 == strncmp(name, "max_header_list_size", 20))
@@ -1945,6 +1940,13 @@ set_engine_option (struct lsquic_engine_settings *settings,
             return 0;
         }
         break;
+    case 23:
+        if (0 == strncmp(name, "max_udp_payload_size_rx", 18))
+        {
+            settings->es_max_udp_payload_size_rx = atoi(val);
+            return 0;
+        }
+        break;
     case 24:
         if (0 == strncmp(name, "init_max_stream_data_uni", 24))
         {