Convert ssl3_send_client_hello to CBB.
Start converting the ones we can right now. Some of the messier ones
resize init_buf rather than assume the initial size is sufficient, so
those will probably wait until init_buf is gone and the handshake's
undergone some more invasive surgery. The async ones will also require
some thought. But some can be incrementally converted now.
BUG=468889
Change-Id: I0bc22e4dca37d9d671a488c42eba864c51933638
Reviewed-on: https://boringssl-review.googlesource.com/6190
Reviewed-by: Adam Langley <alangley@gmail.com>
diff --git a/include/openssl/bytestring.h b/include/openssl/bytestring.h
index 6faab3c..2fa065e 100644
--- a/include/openssl/bytestring.h
+++ b/include/openssl/bytestring.h
@@ -344,6 +344,10 @@
* returns one on success and zero otherwise. */
OPENSSL_EXPORT int CBB_add_u24(CBB *cbb, uint32_t value);
+/* CBB_discard_child discards the current unflushed child of |cbb|. Neither the
+ * child's contents nor the length prefix will be included in the output. */
+OPENSSL_EXPORT void CBB_discard_child(CBB *cbb);
+
/* CBB_add_asn1_uint64 writes an ASN.1 INTEGER into |cbb| using |CBB_add_asn1|
* and writes |value| in its contents. It returns one on success and zero on
* error. */
