TLS 1.0 supports Server Name Identification (SNI) and this is an attempt to write a SNI parser in Erlang.
This library is designed to parse the CLIENT HELLO packet. If the SNI extension is installed it will extract the host name.
This library parses the whole CLIENT_HELLO and I have a untested but probably functional ALNP parser as w 6AF9 ell.
-type bytes_missing() :: integer().
-type parse_error() :: no_tls_handshake|
unknown_tls_version|
{not_whole_handshake, bytes_missing()}|
not_client_hello|
invalid_client_hello|
invalid_session_id|
invalid_cipher_suites|
invalid_compression_methods|
invalid_extensions.
-type client_hello() :: #client_hello{}.
-spec parse(binary()) -> {error, parse_error()}|
{ok, client_hello()}.
-type extensions() :: {extension_name(), [extension_info()]}.
-type extension_name() :: sni.
-type extension_info() :: {uri, binary()}.
-record(client_hello, {tls_version :: {1,0}|{1,1}|{1,2},
gmt_unix_time :: pos_integer(),
random :: <<_:28>>,
session_id :: binary(),
cipher_suites = [] :: [any()],
compression_methods = [] :: [any()],
extensions = [] :: [extensions()]}).-spec parse(binary()) -> {error, parse_error()}|
{ok, client_hello()}.* Not guaranteed at all