--- a/src/http/v3/ngx_http_v3.h
+++ b/src/http/v3/ngx_http_v3.h
@@ -12,13 +12,31 @@
 #include <ngx_config.h>
 #include <ngx_core.h>
 #include <ngx_http.h>
+#include <ngx_http_v3_parse.h>
 
 
 #define NGX_HTTP_V3_STREAM             0x48335354   /* "H3ST" */
 
 
-#define NGX_HTTP_V3_VARLEN_INT_LEN     4
-#define NGX_HTTP_V3_PREFIX_INT_LEN     11
+#define NGX_HTTP_V3_VARLEN_INT_LEN                 4
+#define NGX_HTTP_V3_PREFIX_INT_LEN                 11
+
+#define NGX_HTTP_V3_STREAM_CONTROL                 0x00
+#define NGX_HTTP_V3_STREAM_PUSH                    0x01
+#define NGX_HTTP_V3_STREAM_ENCODER                 0x02
+#define NGX_HTTP_V3_STREAM_DECODER                 0x03
+
+#define NGX_HTTP_V3_FRAME_DATA                     0x00
+#define NGX_HTTP_V3_FRAME_HEADERS                  0x01
+#define NGX_HTTP_V3_FRAME_CANCEL_PUSH              0x03
+#define NGX_HTTP_V3_FRAME_SETTINGS                 0x04
+#define NGX_HTTP_V3_FRAME_PUSH_PROMISE             0x05
+#define NGX_HTTP_V3_FRAME_GOAWAY                   0x07
+#define NGX_HTTP_V3_FRAME_MAX_PUSH_ID              0x0d
+
+#define NGX_HTTP_V3_PARAM_MAX_TABLE_CAPACITY       0x01
+#define NGX_HTTP_V3_PARAM_MAX_HEADER_LIST_SIZE     0x06
+#define NGX_HTTP_V3_PARAM_BLOCKED_STREAMS          0x07
 
 
 typedef struct {
@@ -28,8 +46,11 @@ typedef struct {
 
     ngx_connection_t       *client_encoder;
     ngx_connection_t       *client_decoder;
+    ngx_connection_t       *client_control;
+
     ngx_connection_t       *server_encoder;
     ngx_connection_t       *server_decoder;
+    ngx_connection_t       *server_control;
 } ngx_http_v3_connection_t;
 
 
@@ -39,18 +60,12 @@ typedef struct {
 } ngx_http_v3_header_t;
 
 
-ngx_int_t ngx_http_v3_parse_header(ngx_http_request_t *r, ngx_buf_t *b,
-    ngx_uint_t pseudo);
+ngx_int_t ngx_http_v3_parse_header(ngx_http_request_t *r, ngx_buf_t *b);
 ngx_chain_t *ngx_http_v3_create_header(ngx_http_request_t *r);
 
-
 uintptr_t ngx_http_v3_encode_varlen_int(u_char *p, uint64_t value);
 uintptr_t ngx_http_v3_encode_prefix_int(u_char *p, uint64_t value,
     ngx_uint_t prefix);
-uint64_t ngx_http_v3_decode_varlen_int(u_char *p);
-int64_t ngx_http_v3_decode_prefix_int(u_char **src, size_t len,
-    ngx_uint_t prefix);
-ngx_int_t ngx_http_v3_decode_huffman(ngx_connection_t *c, ngx_str_t *s);
 
 void ngx_http_v3_handle_client_uni_stream(ngx_connection_t *c);
 
@@ -67,6 +82,8 @@ ngx_http_v3_header_t *ngx_http_v3_lookup
     ngx_uint_t dynamic, ngx_uint_t index);
 ngx_int_t ngx_http_v3_check_insert_count(ngx_connection_t *c,
     ngx_uint_t insert_count);
+ngx_int_t ngx_http_v3_set_param(ngx_connection_t *c, uint64_t id,
+    uint64_t value);
 
 ngx_int_t ngx_http_v3_client_ref_insert(ngx_connection_t *c, ngx_uint_t dynamic,
     ngx_uint_t index, ngx_str_t *value);