static void initialize_nghttp2_session(http2_session_data *session_data) {
nghttp2_session_callbacks *callbacks;
nghttp2_session_callbacks_new(&callbacks);
nghttp2_session_callbacks_set_send_callback(callbacks, send_callback);
nghttp2_session_callbacks_set_on_frame_recv_callback(callbacks,
on_frame_recv_callback);
nghttp2_session_callbacks_set_on_data_chunk_recv_callback(
callbacks, on_data_chunk_recv_callback);
nghttp2_session_callbacks_set_on_stream_close_callback(
callbacks, on_stream_close_callback);
nghttp2_session_callbacks_set_on_header_callback(callbacks,
on_header_callback);
nghttp2_session_callbacks_set_on_begin_headers_callback(
callbacks, on_begin_headers_callback);
nghttp2_session_client_new(&session_data->session, callbacks, session_data);
nghttp2_session_callbacks_del(callbacks);
}
/*
* Initialize nghttp2 for a Curl connection
*/
CURLcode Curl_http2_init(struct connectdata *conn)
{
if(!conn->proto.httpc.h2) {
int rc;
nghttp2_session_callbacks *callbacks;
conn->proto.httpc.inbuf = malloc(H2_BUFSIZE);
if(conn->proto.httpc.inbuf == NULL)
return CURLE_OUT_OF_MEMORY;
rc = nghttp2_session_callbacks_new(&callbacks);
if(rc) {
failf(conn->data, "Couldn't initialize nghttp2 callbacks!");
return CURLE_OUT_OF_MEMORY; /* most likely at least */
}
/* nghttp2_send_callback */
nghttp2_session_callbacks_set_send_callback(callbacks, send_callback);
/* nghttp2_on_frame_recv_callback */
nghttp2_session_callbacks_set_on_frame_recv_callback
(callbacks, on_frame_recv);
/* nghttp2_on_invalid_frame_recv_callback */
nghttp2_session_callbacks_set_on_invalid_frame_recv_callback
(callbacks, on_invalid_frame_recv);
/* nghttp2_on_data_chunk_recv_callback */
nghttp2_session_callbacks_set_on_data_chunk_recv_callback
(callbacks, on_data_chunk_recv);
/* nghttp2_before_frame_send_callback */
nghttp2_session_callbacks_set_before_frame_send_callback
(callbacks, before_frame_send);
/* nghttp2_on_frame_send_callback */
nghttp2_session_callbacks_set_on_frame_send_callback
(callbacks, on_frame_send);
/* nghttp2_on_frame_not_send_callback */
nghttp2_session_callbacks_set_on_frame_not_send_callback
(callbacks, on_frame_not_send);
/* nghttp2_on_stream_close_callback */
nghttp2_session_callbacks_set_on_stream_close_callback
(callbacks, on_stream_close);
/* nghttp2_on_begin_headers_callback */
nghttp2_session_callbacks_set_on_begin_headers_callback
(callbacks, on_begin_headers);
/* nghttp2_on_header_callback */
nghttp2_session_callbacks_set_on_header_callback(callbacks, on_header);
/* The nghttp2 session is not yet setup, do it */
rc = nghttp2_session_client_new(&conn->proto.httpc.h2,
callbacks, conn);
nghttp2_session_callbacks_del(callbacks);
if(rc) {
failf(conn->data, "Couldn't initialize nghttp2!");
return CURLE_OUT_OF_MEMORY; /* most likely at least */
}
}
return CURLE_OK;
}
/*
* Initialize nghttp2 for a Curl connection
*/
CURLcode Curl_http2_init(struct connectdata *conn) {
if(!conn->proto.httpc.h2) {
/* The nghttp2 session is not yet setup, do it */
int rc = nghttp2_session_client_new(&conn->proto.httpc.h2,
&callbacks, conn);
if(rc) {
failf(conn->data, "Couldn't initialize nghttp2!");
return CURLE_OUT_OF_MEMORY; /* most likely at least */
}
}
return CURLE_OK;
}
static void initialize_nghttp2_session(http2_session_data *session_data)
{
nghttp2_session_callbacks callbacks;
memset(&callbacks, 0, sizeof(callbacks));
callbacks.send_callback = send_callback;
callbacks.on_frame_recv_callback = on_frame_recv_callback;
callbacks.on_data_chunk_recv_callback = on_data_chunk_recv_callback;
callbacks.on_stream_close_callback = on_stream_close_callback;
callbacks.on_header_callback = on_header_callback;
callbacks.on_begin_headers_callback = on_begin_headers_callback;
nghttp2_session_client_new(&session_data->session, &callbacks, session_data);
}
/*
* Append headers to ask for a HTTP1.1 to HTTP2 upgrade.
*/
CURLcode Curl_http2_request(Curl_send_buffer *req,
struct connectdata *conn)
{
uint8_t binsettings[80];
CURLcode result;
ssize_t binlen;
char *base64;
size_t blen;
if(!conn->proto.httpc.h2) {
/* The nghttp2 session is not yet setup, do it */
int rc = nghttp2_session_client_new(&conn->proto.httpc.h2,
&callbacks, &conn);
if(rc) {
failf(conn->data, "Couldn't initialize nghttp2!");
return CURLE_OUT_OF_MEMORY; /* most likely at least */
}
}
/* As long as we have a fixed set of settings, we don't have to dynamically
* figure out the base64 strings since it'll always be the same. However,
* the settings will likely not be fixed every time in the future.
*/
/* this returns number of bytes it wrote */
binlen = nghttp2_pack_settings_payload(binsettings, settings,
sizeof(settings)/sizeof(settings[0]));
if(!binlen) {
failf(conn->data, "nghttp2 unexpectedly failed on pack_settings_payload");
return CURLE_FAILED_INIT;
}
result = Curl_base64_encode(conn->data, (const char *)binsettings, binlen,
&base64, &blen);
if(result)
return result;
result = Curl_add_bufferf(req,
"Connection: Upgrade, HTTP2-Settings\r\n"
"Upgrade: HTTP/2.0\r\n"
"HTTP2-Settings: %s\r\n", base64);
free(base64);
return result;
}
int nghttp2client_connect(httpclient *pclient, char *url, int port, http2_ssl_custom_conf_t *ssl_config, const struct URI *uri)
{
struct Connection connection;
nghttp2_session_callbacks *callbacks;
int rv;
int ret = 0;
struct Request req;
request_init(&req, uri);
if (0 == (ret = nghttp2s_client_conn(pclient, url, port, ssl_config))) {
pclient->remote_port = HTTPS_PORT;
nghttp2_socket.fd = pclient->fd.fd;
} else {
printf("https_client_conn failed %d\r\n", ret);
/* Resource cleanup */
mbedtls_ssl_close_notify( &(pclient->ssl) );
mbedtls_net_free( &pclient->fd );
mbedtls_x509_crt_free( &(ssl_config->verify_source.cacertl) );
mbedtls_ssl_free( &(pclient->ssl) );
mbedtls_ssl_config_free( &(ssl_config->conf) );
mbedtls_ctr_drbg_free(&ctr_drbg);
mbedtls_entropy_free(&entropy);
request_free(&req);
return ret;
}
//set_tcp_nodelay(nghttp2_socket.fd);
connection.ssl = &(pclient->ssl);
rv = nghttp2_session_callbacks_new(&callbacks);
if (rv != 0) {
printf("nghttp2_session_callbacks_new1 %d", rv);
}
setup_nghttp2_callbacks(callbacks);
rv = nghttp2_session_client_new(&connection.session, callbacks, &connection);
nghttp2_session_callbacks_del(callbacks);
if (rv != 0) {
printf("nghttp2_session_client_new2 %d", rv);
}
nghttp2_submit_settings(connection.session, NGHTTP2_FLAG_NONE, NULL, 0);
/* Submit the HTTP request to the outbound queue. */
submit_request(&connection, &req);
/* Event loop */
while (1) {
int read_flag = 0;
int write_flag = 0;
write_flag = nghttp2_session_want_write(connection.session);
if (write_flag) {
int rv = nghttp2_session_send(connection.session);
printf("nghttp2_session_send %d\r\n", rv);
if (rv < 0) {
write_flag = 0;
//break;
}
}
read_flag = nghttp2_session_want_read(connection.session);
if (read_flag) {
int rv = nghttp2_session_recv(connection.session);
printf("nghttp2_session_recv %d\r\n", rv);
if (rv < 0) {
read_flag = 0;
//break;
}
}
printf("write_flag = %d, read_flag = %d\r\n", write_flag, read_flag);
if ((read_flag == 0) && (write_flag == 0)) {
printf("No active stream!\r\n");
break;
}
}
/* Resource cleanup */
nghttp2_session_del(connection.session);
mbedtls_ssl_close_notify( &(pclient->ssl) );
mbedtls_net_free( &pclient->fd );
mbedtls_x509_crt_free( &(ssl_config->verify_source.cacertl) );
mbedtls_ssl_free( &(pclient->ssl) );
mbedtls_ssl_config_free( &(ssl_config->conf) );
mbedtls_ctr_drbg_free(&ctr_drbg);
mbedtls_entropy_free(&entropy);
request_free(&req);
return 0;
}
/*
* Fetches the resource denoted by |uri|.
*/
static void fetch_uri(const struct URI *uri) {
nghttp2_session_callbacks *callbacks;
int fd;
SSL_CTX *ssl_ctx;
SSL *ssl;
struct Request req;
struct Connection connection;
int rv;
nfds_t npollfds = 1;
struct pollfd pollfds[1];
request_init(&req, uri);
/* Establish connection and setup SSL */
fd = connect_to(req.host, req.port);
if (fd == -1) {
die("Could not open file descriptor");
}
ssl_ctx = SSL_CTX_new(SSLv23_client_method());
if (ssl_ctx == NULL) {
dief("SSL_CTX_new", ERR_error_string(ERR_get_error(), NULL));
}
init_ssl_ctx(ssl_ctx);
ssl = SSL_new(ssl_ctx);
if (ssl == NULL) {
dief("SSL_new", ERR_error_string(ERR_get_error(), NULL));
}
/* To simplify the program, we perform SSL/TLS handshake in blocking
I/O. */
ssl_handshake(ssl, fd);
connection.ssl = ssl;
connection.want_io = IO_NONE;
/* Here make file descriptor non-block */
make_non_block(fd);
set_tcp_nodelay(fd);
printf("[INFO] SSL/TLS handshake completed\n");
rv = nghttp2_session_callbacks_new(&callbacks);
if (rv != 0) {
diec("nghttp2_session_callbacks_new", rv);
}
setup_nghttp2_callbacks(callbacks);
rv = nghttp2_session_client_new(&connection.session, callbacks, &connection);
nghttp2_session_callbacks_del(callbacks);
if (rv != 0) {
diec("nghttp2_session_client_new", rv);
}
rv = nghttp2_submit_settings(connection.session, NGHTTP2_FLAG_NONE, NULL, 0);
if (rv != 0) {
diec("nghttp2_submit_settings", rv);
}
/* Submit the HTTP request to the outbound queue. */
submit_request(&connection, &req);
pollfds[0].fd = fd;
ctl_poll(pollfds, &connection);
/* Event loop */
while (nghttp2_session_want_read(connection.session) ||
nghttp2_session_want_write(connection.session)) {
int nfds = poll(pollfds, npollfds, -1);
if (nfds == -1) {
dief("poll", strerror(errno));
}
if (pollfds[0].revents & (POLLIN | POLLOUT)) {
exec_io(&connection);
}
if ((pollfds[0].revents & POLLHUP) || (pollfds[0].revents & POLLERR)) {
die("Connection error");
}
ctl_poll(pollfds, &connection);
}
/* Resource cleanup */
nghttp2_session_del(connection.session);
SSL_shutdown(ssl);
SSL_free(ssl);
SSL_CTX_free(ssl_ctx);
shutdown(fd, SHUT_WR);
close(fd);
request_free(&req);
}