Release 2.23.0

- [FEATURE] IETF Client 0-RTT support.
- [BUGFIX] Do not schedule MTU probe on first tick.
- [BUGFIX] Parsing DATAGRAM frame.
- [BUGFIX] If push promise fails, do not invoke hset destructor.
- [BUGFIX] Client: When connections are IDed by port number, check DCID.
  Fixes issue #176.
- Revert the 2.22.1 lsquic_is_valid_hs_packet change.  All that was
  necessary is a change to the way we call it in lsquic_engine.  No
  change to the function itself is required.

bin/http_server.c

@@ -1506,8 +1506,14 @@ idle_on_write (lsquic_stream_t *stream, lsquic_stream_ctx_t *st_h)
                 headers.count = sizeof(header_arr) / sizeof(header_arr[0]);
                 req = new_req(GET, push_path->path, st_h->req->authority_str);
                 if (req)
-                    (void) lsquic_conn_push_stream(lsquic_stream_conn(stream),
-                                req, stream, &headers);
+                {
+                    if (0 != lsquic_conn_push_stream(lsquic_stream_conn(stream),
+                                                            req, stream, &headers))
+                    {
+                        LSQ_WARN("stream push failed");
+                        interop_server_hset_destroy(req);
+                    }
+                }
                 else
                     LSQ_WARN("cannot allocate req for push");
                 free(push_path);

bin/test_cert.c

@@ -93,7 +93,11 @@ load_cert (struct lsquic_hash *certs, const char *optarg)
     SSL_CTX_set_max_proto_version(cert->ce_ssl_ctx, TLS1_3_VERSION);
     SSL_CTX_set_default_verify_paths(cert->ce_ssl_ctx);
     SSL_CTX_set_alpn_select_cb(cert->ce_ssl_ctx, select_alpn, NULL);
-    SSL_CTX_set_early_data_enabled(cert->ce_ssl_ctx, 1);    /* XXX */
+    {
+        const char *const s = getenv("LSQUIC_ENABLE_EARLY_DATA");
+        if (!s || atoi(s))
+            SSL_CTX_set_early_data_enabled(cert->ce_ssl_ctx, 1);    /* XXX */
+    }
     if (1 != SSL_CTX_use_certificate_chain_file(cert->ce_ssl_ctx, cert_file))
     {
         LSQ_ERROR("SSL_CTX_use_certificate_chain_file failed: %s", cert_file);

bin/test_common.c

@@ -1993,6 +1993,11 @@ set_engine_option (struct lsquic_engine_settings *settings,
             settings->es_qpack_dec_max_blocked = atoi(val);
             return 0;
         }
+        if (0 == strncmp(name, "init_max_streams_bidi", 21))
+        {
+            settings->es_init_max_streams_bidi = atoi(val);
+            return 0;
+        }
         break;
     case 23:
         if (0 == strncmp(name, "max_udp_payload_size_rx", 23))