Module: sip-router Branch: pd/websocket Commit: 5456e4e90c6330877e0d25d14fba143f2f98f8c6 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=5456e4e9...

Author: Peter Dunkley peter.dunkley@crocodile-rcs.com Committer: Peter Dunkley peter.dunkley@crocodile-rcs.com Date: Sat Jun 30 00:46:20 2012 +0100

modules/websocket: Updated connection reuse and closing flags for WebSocket handshake.

- Updated the sample kamailio.cfg to match too.

---

modules/websocket/example/kamailio.cfg | 5 ++++ modules/websocket/ws_handshake.c | 37 +++++++++++++++++++------------ 2 files changed, 28 insertions(+), 14 deletions(-)

diff --git a/modules/websocket/example/kamailio.cfg b/modules/websocket/example/kamailio.cfg index 48cfa4a..c4bd83f 100644 --- a/modules/websocket/example/kamailio.cfg +++ b/modules/websocket/example/kamailio.cfg @@ -306,6 +306,9 @@ onreply_route[WS_REPLY] { }

event_route[xhttp:request] { + set_reply_close(); + set_reply_no_connect(); + if ($Rp != MY_WS_PORT && $Rp != MY_WSS_PORT) { xlog("L_WARN", "HTTP request received on $Rp\n"); xhttp_reply("403", "Forbidden", "", ""); @@ -330,6 +333,8 @@ event_route[xhttp:request] { # Optional... validate Origin # Optional... perform HTTP authentication

+ # ws_handle_handshake() exits (no further configuration file + # processing of the request) when complete. ws_handle_handshake(); }

diff --git a/modules/websocket/ws_handshake.c b/modules/websocket/ws_handshake.c index 4bacd61..bb53ef7 100644 --- a/modules/websocket/ws_handshake.c +++ b/modules/websocket/ws_handshake.c @@ -115,6 +115,14 @@ int ws_handle_handshake(struct sip_msg *msg) int version; struct hdr_field *hdr = msg->headers; struct tcp_connection *con; + ws_connection_t *wsc; + + /* Make sure that the connection is closed after the response _and_ + the existing connection (from the request) is reused for the + response. The close flag will be unset later if the handshake is + successful. */ + msg->rpl_send_flags.f |= SND_F_CON_CLOSE; + msg->rpl_send_flags.f |= SND_F_FORCE_CON_REUSE;

if (*ws_enabled == 0) { @@ -283,7 +291,18 @@ int ws_handle_handshake(struct sip_msg *msg) reply_key.len = base64_enc(sha1, 20, (unsigned char *) reply_key.s, KEY_BUF_LEN);

- /* Build headers for reply */ + /* Add the connection to the WebSocket connection table */ + wsconn_add(msg->rcv.proto_reserved1); + + /* Make sure Kamailio core sends future messages on this connection + directly to this module */ + if (con->type == PROTO_TLS) + con->type = con->rcv.proto = PROTO_WSS; + else + con->type = con->rcv.proto = PROTO_WS; + + /* Now Kamailio is ready to receive WebSocket frames build and send a + 101 reply */ headers.s = headers_buf; headers.len = snprintf(headers.s, HDR_BUF_LEN, "%.*s: %.*s\r\n" @@ -299,21 +318,11 @@ int ws_handle_handshake(struct sip_msg *msg) reply_key.s, str_hdr_sec_websocket_protocol.len, str_hdr_sec_websocket_protocol.s, str_sip.len, str_sip.s); - - /* Send reply */ + msg->rpl_send_flags.f &= ~SND_F_CON_CLOSE; if (ws_send_reply(msg, 101, &str_status_switching_protocols, &headers) < 0) - return 0; - - /* Add the connection to the WebSocket connection table */ - wsconn_add(con->id); - - /* Make sure Kamailio core sends future messages on this connection - directly to this module */ - if (con->type == PROTO_TLS) - con->type = con->rcv.proto = PROTO_WSS; - else - con->type = con->rcv.proto = PROTO_WS; + if ((wsc = wsconn_get(msg->rcv.proto_reserved1)) != NULL) + wsconn_rm(wsc);

return 0; }