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client ext hdr skip if no arg

Browse source 
https://github.com/warmcat/libwebsockets/issues/453

Signed-off-by: Andy Green <andy.green@linaro.org>
This commit is contained in:
Andy Green 2016-03-09 23:35:41 +08:00
parent a4330f313a
commit f192c01a13
2 changed files with 10 additions and 2 deletions
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5
changelog
View file

@ -1,6 +1,11 @@
Changelog
---------
Fixes
-----
1) MINOR: d9n't send ext hdr if no exts to discuss
v1.7.3
======

7
lib/client.c
View file

@ -956,7 +956,6 @@ lws_generate_client_handshake(struct lws *wsi, char *pkt)
/* tell the server what extensions we could support */
p += sprintf(p, "Sec-WebSocket-Extensions: ");
#ifndef LWS_NO_EXTENSIONS
ext = context->extensions;
while (ext && ext->callback) {
@ -988,13 +987,17 @@ lws_generate_client_handshake(struct lws *wsi, char *pkt)
if (ext_count)
*p++ = ',';
else
p += sprintf(p, "Sec-WebSocket-Extensions: ");
p += sprintf(p, "%s", ext->client_offer);
ext_count++;
ext++;
}
if (ext_count)
p += sprintf(p, "\x0d\x0a");
#endif
p += sprintf(p, "\x0d\x0a");
if (wsi->ietf_spec_revision)
p += sprintf(p, "Sec-WebSocket-Version: %d\x0d\x0a",