CURLcode Curl_http2_setup(struct connectdata *conn)
{
CURLcode result;
struct http_conn *httpc = &conn->proto.httpc;
if(conn->handler->flags & PROTOPT_SSL)
conn->handler = &Curl_handler_http2_ssl;
else
conn->handler = &Curl_handler_http2;
result = Curl_http2_init(conn);
if(result)
return result;
infof(conn->data, "Using HTTP2\n");
httpc->bodystarted = false;
httpc->error_code = NGHTTP2_NO_ERROR;
httpc->closed = false;
httpc->header_recvbuf = Curl_add_buffer_init();
httpc->nread_header_recvbuf = 0;
httpc->data = NULL;
httpc->datalen = 0;
httpc->upload_left = 0;
httpc->upload_mem = NULL;
httpc->upload_len = 0;
httpc->stream_id = -1;
httpc->status_code = -1;
conn->httpversion = 20;
return CURLE_OK;
}
/*
* Append headers to ask for a HTTP1.1 to HTTP2 upgrade.
*/
CURLcode Curl_http2_request_upgrade(Curl_send_buffer *req,
struct connectdata *conn)
{
CURLcode result;
ssize_t binlen;
char *base64;
size_t blen;
struct SingleRequest *k = &conn->data->req;
uint8_t *binsettings = conn->proto.httpc.binsettings;
result = Curl_http2_init(conn);
if(result)
return result;
result = Curl_http2_setup(conn);
if(result)
return result;
/* 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, H2_BINSETTINGS_LEN,
settings,
sizeof(settings)/sizeof(settings[0]));
if(!binlen) {
failf(conn->data, "nghttp2 unexpectedly failed on pack_settings_payload");
return CURLE_FAILED_INIT;
}
conn->proto.httpc.binlen = binlen;
result = Curl_base64url_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: %s\r\n"
"HTTP2-Settings: %s\r\n",
NGHTTP2_CLEARTEXT_PROTO_VERSION_ID, base64);
Curl_safefree(base64);
k->upgr101 = UPGR101_REQUESTED;
return result;
}
CURLcode Curl_http2_setup(struct connectdata *conn)
{
CURLcode result;
struct http_conn *httpc = &conn->proto.httpc;
struct HTTP *stream = conn->data->req.protop;
stream->stream_id = -1;
if(!stream->header_recvbuf)
stream->header_recvbuf = Curl_add_buffer_init();
if((conn->handler == &Curl_handler_http2_ssl) ||
(conn->handler == &Curl_handler_http2))
return CURLE_OK; /* already done */
if(conn->handler->flags & PROTOPT_SSL)
conn->handler = &Curl_handler_http2_ssl;
else
conn->handler = &Curl_handler_http2;
result = Curl_http2_init(conn);
if(result)
return result;
infof(conn->data, "Using HTTP2, server supports multi-use\n");
stream->upload_left = 0;
stream->upload_mem = NULL;
stream->upload_len = 0;
httpc->inbuflen = 0;
httpc->nread_inbuf = 0;
httpc->pause_stream_id = 0;
conn->bits.multiplex = TRUE; /* at least potentially multiplexed */
conn->httpversion = 20;
conn->bundle->multiuse = BUNDLE_MULTIPLEX;
infof(conn->data, "Connection state changed (HTTP/2 confirmed)\n");
Curl_multi_connchanged(conn->data->multi);
/* switch on TCP_NODELAY as we need to send off packets without delay for
maximum throughput */
Curl_tcpnodelay(conn, conn->sock[FIRSTSOCKET]);
return CURLE_OK;
}
