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add-example-protocol-handshake-filter-callback.patch

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Signed-off-by: Andy Green <andy.green@linaro.org>
This commit is contained in:
Andy Green 2011-02-13 08:54:05 +00:00
parent 863d4d25e7
commit 38c4f0c556
2 changed files with 131 additions and 0 deletions
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66
test-server/test-server-extpoll.c
View file

@ -157,6 +157,50 @@ static int callback_http(struct libwebsocket *wsi,
return 0;
}
/*
* this is just an example of parsing handshake headers, you don't need this
* in your code unless you will filter allowing connections by the header
* content
*/
static void
dump_handshake_info(struct lws_tokens *lwst)
{
int n;
static const char *token_names[] = {
[WSI_TOKEN_GET_URI] = "GET URI",
[WSI_TOKEN_HOST] = "Host",
[WSI_TOKEN_CONNECTION] = "Connection",
[WSI_TOKEN_KEY1] = "key 1",
[WSI_TOKEN_KEY2] = "key 2",
[WSI_TOKEN_PROTOCOL] = "Protocol",
[WSI_TOKEN_UPGRADE] = "Upgrade",
[WSI_TOKEN_ORIGIN] = "Origin",
[WSI_TOKEN_DRAFT] = "Draft",
[WSI_TOKEN_CHALLENGE] = "Challenge",
/* new for 04 */
[WSI_TOKEN_KEY] = "Key",
[WSI_TOKEN_VERSION] = "Version",
[WSI_TOKEN_SWORIGIN] = "Sworigin",
/* new for 05 */
[WSI_TOKEN_EXTENSIONS] = "Extensions",
/* client receives these */
[WSI_TOKEN_ACCEPT] = "Accept",
[WSI_TOKEN_NONCE] = "Nonce",
[WSI_TOKEN_HTTP] = "Http",
};
for (n = 0; n < WSI_TOKEN_COUNT; n++) {
if (lwst[n].token == NULL)
continue;
fprintf(stderr, " %s = %s\n", token_names[n], lwst[n].token);
}
}
/* dumb_increment protocol */
/*
@ -211,6 +255,17 @@ callback_dumb_increment(struct libwebsocket *wsi,
pss->number = 0;
break;
/*
* this just demonstrates how to use the protocol filter. If you won't
* study and reject connections based on header content, you don't need
* to handle this callback
*/
case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
dump_handshake_info((struct lws_tokens *)(long)user);
/* you could return non-zero here and kill the connection */
break;
default:
break;
}
@ -312,6 +367,17 @@ callback_lws_mirror(struct libwebsocket *wsi,
libwebsockets_get_protocol(wsi));
break;
/*
* this just demonstrates how to use the protocol filter. If you won't
* study and reject connections based on header content, you don't need
* to handle this callback
*/
case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
dump_handshake_info((struct lws_tokens *)(long)user);
/* you could return non-zero here and kill the connection */
break;
default:
break;
}

65
test-server/test-server.c
View file

@ -111,6 +111,51 @@ static int callback_http(struct libwebsocket *wsi,
return 0;
}
/*
* this is just an example of parsing handshake headers, you don't need this
* in your code unless you will filter allowing connections by the header
* content
*/
static void
dump_handshake_info(struct lws_tokens *lwst)
{
int n;
static const char *token_names[] = {
[WSI_TOKEN_GET_URI] = "GET URI",
[WSI_TOKEN_HOST] = "Host",
[WSI_TOKEN_CONNECTION] = "Connection",
[WSI_TOKEN_KEY1] = "key 1",
[WSI_TOKEN_KEY2] = "key 2",
[WSI_TOKEN_PROTOCOL] = "Protocol",
[WSI_TOKEN_UPGRADE] = "Upgrade",
[WSI_TOKEN_ORIGIN] = "Origin",
[WSI_TOKEN_DRAFT] = "Draft",
[WSI_TOKEN_CHALLENGE] = "Challenge",
/* new for 04 */
[WSI_TOKEN_KEY] = "Key",
[WSI_TOKEN_VERSION] = "Version",
[WSI_TOKEN_SWORIGIN] = "Sworigin",
/* new for 05 */
[WSI_TOKEN_EXTENSIONS] = "Extensions",
/* client receives these */
[WSI_TOKEN_ACCEPT] = "Accept",
[WSI_TOKEN_NONCE] = "Nonce",
[WSI_TOKEN_HTTP] = "Http",
};
for (n = 0; n < WSI_TOKEN_COUNT; n++) {
if (lwst[n].token == NULL)
continue;
fprintf(stderr, " %s = %s\n", token_names[n], lwst[n].token);
}
}
/* dumb_increment protocol */
/*
@ -164,6 +209,16 @@ callback_dumb_increment(struct libwebsocket *wsi,
if (strcmp(in, "reset\n") == 0)
pss->number = 0;
break;
/*
* this just demonstrates how to use the protocol filter. If you won't
* study and reject connections based on header content, you don't need
* to handle this callback
*/
case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
dump_handshake_info((struct lws_tokens *)(long)user);
/* you could return non-zero here and kill the connection */
break;
default:
break;
@ -262,6 +317,16 @@ callback_lws_mirror(struct libwebsocket *wsi,
libwebsocket_callback_on_writable_all_protocol(
libwebsockets_get_protocol(wsi));
break;
/*
* this just demonstrates how to use the protocol filter. If you won't
* study and reject connections based on header content, you don't need
* to handle this callback
*/
case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
dump_handshake_info((struct lws_tokens *)(long)user);
/* you could return non-zero here and kill the connection */
break;
default:
break;