Add minimal http3 impl.

Author: uNetworkingAB

Makefile

@@ -14,6 +14,7 @@ endif
 # WITH_QUIC enables experimental Http3 examples
 ifeq ($(WITH_QUIC),1)
 	override CXXFLAGS += -DLIBUS_USE_QUIC
+	override LDFLAGS += -pthread -lz -lm uSockets/lsquic/src/liblsquic/liblsquic.a
 endif
 
 # WITH_LIBDEFLATE=1 enables fast paths for SHARED_COMPRESSOR and inflation

src/Http3App.h

@@ -11,7 +11,7 @@ namespace uWS {
 
         QuicApp(SocketContextOptions options = {}) {
             /* Create the http3 context */
-            http3Context = Http3Context::create((us_loop_t *)Loop::get(), options);
+            http3Context = Http3Context::create((us_loop_t *)Loop::get(), {});
         }
 
         QuicApp &listen(int port, std::function<void(void *)> cb) {
@@ -25,7 +25,7 @@ namespace uWS {
         }
 
         void run() {
-
+            uWS::Loop::get()->run();
         }
     };
 

src/Http3Context.h

@@ -1,6 +1,93 @@
+
+extern "C" {
+#include "quic.h"
+}
+
+
+/* Let's just have this one here for now */
+us_quic_socket_context_t *context;
+
+void print_current_headers() {
+    /* Iterate the headers and print them */
+    for (int i = 0, more = 1; more; i++) {
+        char *name, *value;
+        int name_length, value_length;
+        if (more = us_quic_socket_context_get_header(context, i, &name, &name_length, &value, &value_length)) {
+            printf("header %.*s = %.*s\n", name_length, name, value_length, value);
+        }
+    }
+}
+
+/* This would be a request */
+void on_stream_headers(us_quic_stream_t *s) {
+
+    printf("==== HTTP/3 request ====\n");
+
+    print_current_headers();
+
+    /* Write headers */
+    us_quic_socket_context_set_header(context, 0, ":status", 7, "200", 3);
+    //us_quic_socket_context_set_header(context, 1, "content-length", 14, "11", 2);
+    //us_quic_socket_context_set_header(context, 2, "content-type", 12, "text/html", 9);
+    us_quic_socket_context_send_headers(context, s, 1, 1);
+
+    /* Write body and shutdown (unknown if content-length must be present?) */
+    us_quic_stream_write(s, "Hello quic!", 11);
+
+    /* Every request has its own stream, so we conceptually serve requests like in HTTP 1.0 */
+    us_quic_stream_shutdown(s);
+}
+
+/* And this would be the body of the request */
+void on_stream_data(us_quic_stream_t *s, char *data, int length) {
+    printf("Body length is: %d\n", length);
+}
+
+void on_stream_writable(us_quic_stream_t *s) {
+
+}
+
+void on_stream_close(us_quic_stream_t *s) {
+    printf("Stream closed\n");
+}
+
+/* On new connection */
+void on_open(us_quic_socket_t *s, int is_client) {
+    printf("Connection established!\n");
+}
+
+/* On new stream */
+void on_stream_open(us_quic_stream_t *s, int is_client) {
+    printf("Stream opened!\n");
+}
+
+void on_close(us_quic_socket_t *s) {
+    printf("Disconnected!\n");
+}
+
 namespace uWS {
     struct Http3Context {
-        static Http3Context *create(us_loop_t *loop, us_socket_context_options_t options) {
+        static Http3Context *create(us_loop_t *loop, us_quic_socket_context_options_t options) {
+            //return nullptr;
+
+            printf("Creating context now\n");
+
+            /* Create quic socket context (assumes h3 for now) */
+            context = us_create_quic_socket_context(loop, options);
+
+            /* Specify application callbacks */
+            us_quic_socket_context_on_stream_data(context, on_stream_data);
+            us_quic_socket_context_on_stream_open(context, on_stream_open);
+            us_quic_socket_context_on_stream_close(context, on_stream_close);
+            us_quic_socket_context_on_stream_writable(context, on_stream_writable);
+            us_quic_socket_context_on_stream_headers(context, on_stream_headers);
+            us_quic_socket_context_on_open(context, on_open);
+            us_quic_socket_context_on_close(context, on_close);
+
+            /* The listening socket is the actual UDP socket used */
+            us_quic_listen_socket_t *listen_socket = us_quic_socket_context_listen(context, "::1", 9004);
+
+
             return nullptr;
 
             // call init here after setting the ext to Http3ContextData