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Check reply CSeq against request CSeq

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This commit is contained in:
Julien BLACHE 2011-03-11 18:32:46 +01:00
parent f097d80d6a
commit 7fcb8e4447
1 changed files with 31 additions and 11 deletions
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40
src/raop.c
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2010 Julien BLACHE <jb@jblache.org>
* Copyright (C) 2010-2011 Julien BLACHE <jb@jblache.org>
*
* RAOP AirTunes v2
*
@ -954,19 +954,15 @@ raop_add_headers(struct raop_session *rs, struct evrtsp_request *req, enum evrts
}
static int
raop_check_cseq(struct raop_session *rs, struct evrtsp_request *req)
raop_grab_cseq(struct evkeyvalq *headers)
{
const char *param;
int cseq;
int ret;
param = evrtsp_find_header(req->input_headers, "CSeq");
param = evrtsp_find_header(headers, "CSeq");
if (!param)
{
DPRINTF(E_LOG, L_RAOP, "No CSeq in reply\n");
return -1;
}
ret = safe_atoi32(param, &cseq);
if (ret < 0)
@ -976,11 +972,35 @@ raop_check_cseq(struct raop_session *rs, struct evrtsp_request *req)
return -1;
}
/* CSeq is always incremented before checking */
if (cseq == (rs->cseq - 1))
return cseq;
}
static int
raop_check_cseq(struct raop_session *rs, struct evrtsp_request *req)
{
int reply_cseq;
int request_cseq;
reply_cseq = raop_grab_cseq(req->input_headers);
if (reply_cseq < 0)
{
DPRINTF(E_LOG, L_RAOP, "No CSeq in reply\n");
return -1;
}
request_cseq = raop_grab_cseq(req->output_headers);
if (request_cseq < 0)
{
DPRINTF(E_LOG, L_RAOP, "No CSeq in request\n");
return -1;
}
if (reply_cseq == request_cseq)
return 0;
DPRINTF(E_LOG, L_RAOP, "CSeq in reply does not match last CSeq: got %d expected %d\n", cseq, rs->cseq);
DPRINTF(E_LOG, L_RAOP, "Reply CSeq does not match request CSeq: got %d expected %d\n", reply_cseq, request_cseq);
return -1;
}