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DTLS Finished send duplication

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1. Only add the encrypted Finished message to DTLS retransmit pool.
2. Don't increment the epoch or sequence number when retransmitting.
This commit is contained in:
John Safranek
2013-05-15 10:31:42 -07:00
parent 091c7a7ef3
commit 05f11c4bca
1 changed files with 1 additions and 14 deletions
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15
src/internal.c
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@@ -1829,14 +1829,6 @@ int DtlsPoolSend(CYASSL* ssl)
for (i = 0; i < pool->used; i++) { for (i = 0; i < pool->used; i++) {
int sendResult; int sendResult;
buffer* buf = &pool->buf[i]; buffer* buf = &pool->buf[i];
DtlsRecordLayerHeader* dtls = (DtlsRecordLayerHeader*)buf->buffer;
if (dtls->type == change_cipher_spec) {
ssl->keys.dtls_epoch++;
ssl->keys.dtls_sequence_number = 0;
}
c16toa(ssl->keys.dtls_epoch, dtls->epoch);
c32to48(ssl->keys.dtls_sequence_number++, dtls->sequence_number);
if ((ret = CheckAvailableSize(ssl, buf->length)) != 0) if ((ret = CheckAvailableSize(ssl, buf->length)) != 0)
return ret; return ret;
@@ -4971,14 +4963,9 @@ static int BuildMessage(CYASSL* ssl, byte* output, const byte* input, int inSz,
idx += inSz; idx += inSz;
if (type == handshake) { if (type == handshake) {
#ifdef CYASSL_DTLS
if (ssl->options.dtls) {
if ((ret = DtlsPoolSave(ssl, output, headerSz+inSz)) != 0)
return ret;
}
#endif
HashOutput(ssl, output, headerSz + inSz, ivSz); HashOutput(ssl, output, headerSz + inSz, ivSz);
} }
if (ssl->specs.cipher_type != aead) { if (ssl->specs.cipher_type != aead) {
ssl->hmac(ssl, output+idx, output + headerSz + ivSz, inSz, type, 0); ssl->hmac(ssl, output+idx, output + headerSz + ivSz, inSz, type, 0);
idx += digestSz; idx += digestSz;