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authorIngela Anderton Andin <[email protected]>2011-01-14 10:44:15 +0100
committerIngela Anderton Andin <[email protected]>2011-01-14 10:44:15 +0100
commit05f8664012999f97a80593acce6d3d79793b0634 (patch)
treedf6fe95ed5352fb8c5da258e6d5d278ffd43b615 /lib
parent3b7fd1030711ad56fa45d18dc6e0f1d0beee2399 (diff)
parent114c51979e79888d5b35698bbecea68522979c57 (diff)
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Merge branch 'ia/ssl/connection-memory-size/OTP-9021' into dev
* ia/ssl/connection-memory-size/OTP-9021: Reduce memory footprint
Diffstat (limited to 'lib')
-rw-r--r--lib/ssl/src/ssl_connection.erl53
1 files changed, 25 insertions, 28 deletions
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index 4a31b57802..489895cf29 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -70,7 +70,6 @@
%% {{md5_hash, sha_hash}, {prev_md5, prev_sha}} (binary())
tls_handshake_hashes, % see above
tls_cipher_texts, % list() received but not deciphered yet
- own_cert, % binary() | undefined
session, % #session{} from ssl_handshake.hrl
session_cache, %
session_cache_cb, %
@@ -307,7 +306,6 @@ init([Role, Host, Port, Socket, {SSLOpts0, _} = Options,
{ok, Ref, CacheRef, OwnCert, Key, DHParams} ->
Session = State0#state.session,
State = State0#state{tls_handshake_hashes = Hashes0,
- own_cert = OwnCert,
session = Session#session{own_certificate = OwnCert},
cert_db_ref = Ref,
session_cache = CacheRef,
@@ -334,12 +332,10 @@ init([Role, Host, Port, Socket, {SSLOpts0, _} = Options,
%%--------------------------------------------------------------------
hello(start, #state{host = Host, port = Port, role = client,
ssl_options = SslOpts,
- own_cert = Cert,
+ session = #session{own_certificate = Cert} = Session0,
transport_cb = Transport, socket = Socket,
connection_states = ConnectionStates,
- renegotiation = {Renegotiation, _}}
- = State0) ->
-
+ renegotiation = {Renegotiation, _}} = State0) ->
Hello = ssl_handshake:client_hello(Host, Port,
ConnectionStates,
SslOpts, Renegotiation, Cert),
@@ -351,13 +347,13 @@ hello(start, #state{host = Host, port = Port, role = client,
Transport:send(Socket, BinMsg),
State1 = State0#state{connection_states = CS2,
negotiated_version = Version, %% Requested version
- session =
- #session{session_id = Hello#client_hello.session_id,
- is_resumable = false},
+ session =
+ Session0#session{session_id = Hello#client_hello.session_id,
+ is_resumable = false},
tls_handshake_hashes = Hashes1},
{Record, State} = next_record(State1),
next_state(hello, Record, State);
-
+
hello(start, #state{role = server} = State0) ->
{Record, State} = next_record(State0),
next_state(hello, Record, State);
@@ -374,7 +370,6 @@ hello(#server_hello{cipher_suite = CipherSuite,
negotiated_version = ReqVersion,
renegotiation = {Renegotiation, _},
ssl_options = SslOptions} = State0) ->
-
case ssl_handshake:hello(Hello, SslOptions, ConnectionStates0, Renegotiation) of
{Version, NewId, ConnectionStates} ->
{KeyAlgorithm, _, _} =
@@ -400,13 +395,11 @@ hello(#server_hello{cipher_suite = CipherSuite,
hello(Hello = #client_hello{client_version = ClientVersion},
State = #state{connection_states = ConnectionStates0,
- port = Port, session = Session0,
+ port = Port, session = #session{own_certificate = Cert} = Session0,
renegotiation = {Renegotiation, _},
session_cache = Cache,
session_cache_cb = CacheCb,
- ssl_options = SslOpts,
- own_cert = Cert}) ->
-
+ ssl_options = SslOpts}) ->
case ssl_handshake:hello(Hello, SslOpts, {Port, Session0, Cache, CacheCb,
ConnectionStates0, Cert}, Renegotiation) of
{Version, {Type, Session}, ConnectionStates} ->
@@ -540,7 +533,7 @@ certify(#server_hello_done{},
connection_states = ConnectionStates0,
negotiated_version = Version,
premaster_secret = undefined,
- role = client} = State0) ->
+ role = client} = State0) ->
case ssl_handshake:master_secret(Version, Session,
ConnectionStates0, client) of
{MasterSecret, ConnectionStates1} ->
@@ -617,7 +610,6 @@ certify_client_key_exchange(#client_diffie_hellman_public{dh_public = ClientPubl
diffie_hellman_params = #'DHParameter'{prime = P,
base = G},
diffie_hellman_keys = {_, ServerDhPrivateKey}} = State0) ->
-
case dh_master_secret(crypto:mpint(P), crypto:mpint(G), ClientPublicDhKey, ServerDhPrivateKey, State0) of
#state{} = State1 ->
{Record, State} = next_record(State1),
@@ -660,8 +652,7 @@ cipher(#finished{verify_data = Data} = Finished,
role = Role,
session = #session{master_secret = MasterSecret}
= Session0,
- tls_handshake_hashes = Hashes0} = State) ->
-
+ tls_handshake_hashes = Hashes0} = State) ->
case ssl_handshake:verify_connection(Version, Finished,
opposite_role(Role),
MasterSecret, Hashes0) of
@@ -682,14 +673,13 @@ cipher(Msg, State) ->
%%--------------------------------------------------------------------
connection(#hello_request{}, #state{host = Host, port = Port,
socket = Socket,
- own_cert = Cert,
+ session = #session{own_certificate = Cert},
ssl_options = SslOpts,
negotiated_version = Version,
transport_cb = Transport,
connection_states = ConnectionStates0,
renegotiation = {Renegotiation, _},
tls_handshake_hashes = Hashes0} = State0) ->
-
Hello = ssl_handshake:client_hello(Host, Port, ConnectionStates0,
SslOpts, Renegotiation, Cert),
@@ -1162,7 +1152,7 @@ certify_client(#state{client_certificate_requested = true, role = client,
transport_cb = Transport,
negotiated_version = Version,
cert_db_ref = CertDbRef,
- own_cert = OwnCert,
+ session = #session{own_certificate = OwnCert},
socket = Socket,
tls_handshake_hashes = Hashes0} = State) ->
Certificate = ssl_handshake:certificate(OwnCert, CertDbRef, client),
@@ -1178,10 +1168,10 @@ verify_client_cert(#state{client_certificate_requested = true, role = client,
connection_states = ConnectionStates0,
transport_cb = Transport,
negotiated_version = Version,
- own_cert = OwnCert,
socket = Socket,
private_key = PrivateKey,
- session = #session{master_secret = MasterSecret},
+ session = #session{master_secret = MasterSecret,
+ own_certificate = OwnCert},
tls_handshake_hashes = Hashes0} = State) ->
case ssl_handshake:client_certificate_verify(OwnCert, MasterSecret,
@@ -1347,7 +1337,7 @@ certify_server(#state{transport_cb = Transport,
connection_states = ConnectionStates,
tls_handshake_hashes = Hashes,
cert_db_ref = CertDbRef,
- own_cert = OwnCert} = State) ->
+ session = #session{own_certificate = OwnCert}} = State) ->
case ssl_handshake:certificate(OwnCert, CertDbRef, server) of
CertMsg = #certificate{} ->
{BinCertMsg, NewConnectionStates, NewHashes} =
@@ -1374,7 +1364,6 @@ key_exchange(#state{role = server, key_algorithm = Algo,
when Algo == dhe_dss;
Algo == dhe_rsa;
Algo == dh_anon ->
-
Keys = crypto:dh_generate_key([crypto:mpint(P), crypto:mpint(G)]),
ConnectionState =
ssl_record:pending_connection_state(ConnectionStates0, read),
@@ -1926,14 +1915,22 @@ next_state_connection(StateName, #state{send_queue = Queue0,
next_state_is_connection(State)
end.
+%% In next_state_is_connection/1: clear tls_handshake_hashes,
+%% premaster_secret and public_key_info (only needed during handshake)
+%% to reduce memory foot print of a connection.
next_state_is_connection(State =
#state{recv_during_renegotiation = true, socket_options =
#socket_options{active = false}}) ->
- passive_receive(State#state{recv_during_renegotiation = false}, connection);
+ passive_receive(State#state{recv_during_renegotiation = false,
+ premaster_secret = undefined,
+ public_key_info = undefined,
+ tls_handshake_hashes = {<<>>, <<>>}}, connection);
next_state_is_connection(State0) ->
{Record, State} = next_record_if_active(State0),
- next_state(connection, Record, State).
+ next_state(connection, Record, State#state{premaster_secret = undefined,
+ public_key_info = undefined,
+ tls_handshake_hashes = {<<>>, <<>>}}).
register_session(_, _, _, #session{is_resumable = true} = Session) ->
Session; %% Already registered