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LWS_CALLBACK_ADD_HEADERS: also on upgrade headers

Browse source 
https://github.com/warmcat/libwebsockets/issues/1028
This commit is contained in:
Andy Green 2017-09-21 21:51:04 +08:00
parent 12adb39542
commit 4a0db7fbf1
2 changed files with 31 additions and 5 deletions
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23
lib/libwebsockets.h
View file

@ -1284,9 +1284,26 @@ enum lws_callback_reasons {
LWS_CALLBACK_ADD_HEADERS = 53,
/**< This gives your user code a chance to add headers to a
* transaction bound to your protocol. `in` points to a
* `struct lws_process_html_args` you can add headers into
* using the normal lws apis. See generic sessions for an
* example of how to use with cookies. */
* `struct lws_process_html_args` describing a buffer and length
* you can add headers into using the normal lws apis.
*
* Only `args->p` and `args->len` are valid, and `args->p` should
* be moved on by the amount of bytes written, if any. Eg
*
* case LWS_CALLBACK_ADD_HEADERS:
*
* struct lws_process_html_args *args =
* (struct lws_process_html_args *)in;
*
* if (lws_add_http_header_by_name(wsi,
* (unsigned char *)"set-cookie:",
* (unsigned char *)cookie, cookie_len,
* (unsigned char **)&args->p,
* (unsigned char *)args->p + args->max_len))
* return 1;
*
* break;
*/
LWS_CALLBACK_SESSION_INFO = 54,
/**< This is only generated by user code using generic sessions.
* It's used to get a `struct lws_session_info` filled in by

13
lib/server-handshake.c
View file

@ -228,6 +228,7 @@ int
handshake_0405(struct lws_context *context, struct lws *wsi)
{
struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
struct lws_process_html_args args;
unsigned char hash[20];
int n, accept_len;
char *response;
@ -299,12 +300,20 @@ handshake_0405(struct lws_context *context, struct lws *wsi)
if (lws_extension_server_handshake(wsi, &p, 192))
goto bail;
#endif
LWS_CPYAPP(p, "\x0d\x0a");
//LWS_CPYAPP(p, "\x0d\x0a""An-unknown-header: blah");
args.p = p;
args.max_len = ((char *)pt->serv_buf + context->pt_serv_buf_size) - p;
if (user_callback_handle_rxflow(wsi->protocol->callback, wsi,
LWS_CALLBACK_ADD_HEADERS,
wsi->user_space, &args, 0))
goto bail;
p = args.p;
/* end of response packet */
LWS_CPYAPP(p, "\x0d\x0a\x0d\x0a");
LWS_CPYAPP(p, "\x0d\x0a");
if (!lws_any_extension_handled(wsi, LWS_EXT_CB_HANDSHAKE_REPLY_TX,
response, p - response)) {