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[mod_wstunnel] set Sec-WebSocket-Protocol if bin 

set Sec-WebSocket-Protocol: binary in response if request header
Sec-WebSocket-Protocol: binary provided by client in Upgrade: websocket
request, or if wstunnel.frame-type = "binary" in lighttpd config
This commit is contained in:
Glenn Strauss 2017-10-09 01:21:11 -04:00
parent d8dba4ae6a
commit ef11fa42da
1 changed files with 15 additions and 2 deletions
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17
src/mod_wstunnel.c
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@ -62,6 +62,7 @@
* - attribute "proto" removed; mod_proxy can proxy to backend websocket server
* - attribute "subproto" should be replaced with mod_setenv directive
* setenv.set-response-header = ( "Sec-WebSocket-Protocol" => "..." )
* if header is required
*
* not reviewed:
* - websocket protocol compliance has not been reviewed
@ -501,6 +502,7 @@ static void wstunnel_handler_ctx_free(void *gwhctx) {
static handler_t wstunnel_handler_setup (server *srv, connection *con, plugin_data *p) {
handler_ctx *hctx = con->plugin_ctx[p->id];
int binary;
int hybivers;
hctx->srv = srv; /*(for mod_wstunnel module-specific DEBUG_LOG() macro)*/
hctx->conf.frame_type = p->conf.frame_type;
@ -529,7 +531,16 @@ static handler_t wstunnel_handler_setup (server *srv, connection *con, plugin_da
hctx->frame.ctl.siz = 0;
hctx->frame.payload = buffer_init();
if (!buffer_is_empty(hctx->conf.frame_type)) { /*("binary")*/
binary = !buffer_is_empty(hctx->conf.frame_type); /*("binary")*/
if (!binary) {
data_string *ds = (data_string *)
array_get_element(con->request.headers, "Sec-WebSocket-Protocol");
binary = (NULL != ds
&& buffer_is_equal_caseless_string(ds->value,
CONST_STR_LEN("binary")));
}
if (binary) {
DEBUG_LOG(MOD_WEBSOCKET_LOG_INFO, "s",
"will recv binary data from backend");
hctx->frame.type = MOD_WEBSOCKET_FRAME_TYPE_BIN;
@ -829,7 +840,9 @@ static int create_response_rfc_6455(handler_ctx *hctx) {
buffer_append_base64_encode(ds->value, sha_digest, SHA_DIGEST_LENGTH, BASE64_STANDARD);
array_insert_unique(hdrs, (data_unset *)ds);
/*(admin can set "Sec-WebSocket-Protocol" response hdr using mod_setenv)*/
if (hctx->frame.type == MOD_WEBSOCKET_FRAME_TYPE_BIN)
array_set_key_value(hdrs, CONST_STR_LEN("Sec-WebSocket-Protocol"),
CONST_STR_LEN("binary"));
return 0;
}