diff --git a/libgm/client.go b/libgm/client.go
index f361da2..460dd10 100644
--- a/libgm/client.go
+++ b/libgm/client.go
@@ -17,7 +17,6 @@ import (
 	"go.mau.fi/mautrix-gmessages/libgm/crypto"
 	"go.mau.fi/mautrix-gmessages/libgm/events"
 	"go.mau.fi/mautrix-gmessages/libgm/gmproto"
-	"go.mau.fi/mautrix-gmessages/libgm/pblite"
 	"go.mau.fi/mautrix-gmessages/libgm/util"
 )
 
@@ -75,8 +74,7 @@ func NewClient(authData *AuthData, logger zerolog.Logger) *Client {
 		http:           &http.Client{},
 	}
 	sessionHandler.client = cli
-	rpc := &RPC{client: cli, http: &http.Client{Transport: &http.Transport{Proxy: cli.proxy}}}
-	cli.rpc = rpc
+	cli.rpc = &RPC{client: cli}
 	cli.FetchConfigVersion()
 	return cli
 }
@@ -234,7 +232,7 @@ func (c *Client) refreshAuthToken() error {
 		return err
 	}
 
-	payload, err := pblite.Marshal(&gmproto.RegisterRefreshRequest{
+	payload := &gmproto.RegisterRefreshRequest{
 		MessageAuth: &gmproto.AuthMessage{
 			RequestID:        requestID,
 			TachyonAuthToken: c.AuthData.TachyonAuthToken,
@@ -245,37 +243,18 @@ func (c *Client) refreshAuthToken() error {
 		Signature:         sig,
 		EmptyRefreshArr:   &gmproto.RegisterRefreshRequest_NestedEmptyArr{EmptyArr: &gmproto.EmptyArr{}},
 		MessageType:       2, // hmm
-	})
+	}
+
+	resp, err := typedHTTPResponse[*gmproto.RegisterRefreshResponse](
+		c.makeProtobufHTTPRequest(util.RegisterRefreshURL, payload, ContentTypePBLite),
+	)
 	if err != nil {
 		return err
 	}
 
-	refreshResponse, requestErr := c.rpc.sendMessageRequest(util.RegisterRefreshURL, payload)
-	if requestErr != nil {
-		return requestErr
-	}
-
-	if refreshResponse.StatusCode == 401 {
-		return fmt.Errorf("failed to refresh auth token: unauthorized (try reauthenticating through qr code)")
-	}
-
-	if refreshResponse.StatusCode == 400 {
-		return fmt.Errorf("failed to refresh auth token: signature failed")
-	}
-	responseBody, readErr := io.ReadAll(refreshResponse.Body)
-	if readErr != nil {
-		return readErr
-	}
-
-	resp := &gmproto.RegisterRefreshResponse{}
-	deserializeErr := pblite.Unmarshal(responseBody, resp)
-	if deserializeErr != nil {
-		return deserializeErr
-	}
-
 	token := resp.GetTokenData().GetTachyonAuthToken()
 	if token == nil {
-		return fmt.Errorf("failed to refresh auth token: something happened")
+		return fmt.Errorf("no tachyon auth token in refresh response")
 	}
 
 	validFor, _ := strconv.ParseInt(resp.GetTokenData().GetValidFor(), 10, 64)
diff --git a/libgm/events/ready.go b/libgm/events/ready.go
index c9e20ec..25d42d1 100644
--- a/libgm/events/ready.go
+++ b/libgm/events/ready.go
@@ -27,6 +27,9 @@ type HTTPError struct {
 }
 
 func (he HTTPError) Error() string {
+	if he.Action == "" {
+		return fmt.Sprintf("unexpected http %d", he.Resp.StatusCode)
+	}
 	return fmt.Sprintf("http %d while %s", he.Resp.StatusCode, he.Action)
 }
 
diff --git a/libgm/gmproto/rpc.pb.go b/libgm/gmproto/rpc.pb.go
index e68da99..3bdb6a5 100644
--- a/libgm/gmproto/rpc.pb.go
+++ b/libgm/gmproto/rpc.pb.go
@@ -789,6 +789,54 @@ func (x *OutgoingRPCData) GetSessionID() string {
 	return ""
 }
 
+type OutgoingRPCResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// This is not present for AckMessage responses, only for SendMessage
+	Timestamp *string `protobuf:"bytes,2,opt,name=timestamp,proto3,oneof" json:"timestamp,omitempty"`
+}
+
+func (x *OutgoingRPCResponse) Reset() {
+	*x = OutgoingRPCResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_rpc_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *OutgoingRPCResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*OutgoingRPCResponse) ProtoMessage() {}
+
+func (x *OutgoingRPCResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_rpc_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use OutgoingRPCResponse.ProtoReflect.Descriptor instead.
+func (*OutgoingRPCResponse) Descriptor() ([]byte, []int) {
+	return file_rpc_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *OutgoingRPCResponse) GetTimestamp() string {
+	if x != nil && x.Timestamp != nil {
+		return *x.Timestamp
+	}
+	return ""
+}
+
 type OutgoingRPCMessage_Auth struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -802,7 +850,7 @@ type OutgoingRPCMessage_Auth struct {
 func (x *OutgoingRPCMessage_Auth) Reset() {
 	*x = OutgoingRPCMessage_Auth{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_rpc_proto_msgTypes[6]
+		mi := &file_rpc_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -815,7 +863,7 @@ func (x *OutgoingRPCMessage_Auth) String() string {
 func (*OutgoingRPCMessage_Auth) ProtoMessage() {}
 
 func (x *OutgoingRPCMessage_Auth) ProtoReflect() protoreflect.Message {
-	mi := &file_rpc_proto_msgTypes[6]
+	mi := &file_rpc_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -867,7 +915,7 @@ type OutgoingRPCMessage_Data struct {
 func (x *OutgoingRPCMessage_Data) Reset() {
 	*x = OutgoingRPCMessage_Data{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_rpc_proto_msgTypes[7]
+		mi := &file_rpc_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -880,7 +928,7 @@ func (x *OutgoingRPCMessage_Data) String() string {
 func (*OutgoingRPCMessage_Data) ProtoMessage() {}
 
 func (x *OutgoingRPCMessage_Data) ProtoReflect() protoreflect.Message {
-	mi := &file_rpc_proto_msgTypes[7]
+	mi := &file_rpc_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -936,7 +984,7 @@ type OutgoingRPCMessage_Data_Type struct {
 func (x *OutgoingRPCMessage_Data_Type) Reset() {
 	*x = OutgoingRPCMessage_Data_Type{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_rpc_proto_msgTypes[8]
+		mi := &file_rpc_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -949,7 +997,7 @@ func (x *OutgoingRPCMessage_Data_Type) String() string {
 func (*OutgoingRPCMessage_Data_Type) ProtoMessage() {}
 
 func (x *OutgoingRPCMessage_Data_Type) ProtoReflect() protoreflect.Message {
-	mi := &file_rpc_proto_msgTypes[8]
+	mi := &file_rpc_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -979,6 +1027,54 @@ func (x *OutgoingRPCMessage_Data_Type) GetMessageType() MessageType {
 	return MessageType_UNKNOWN_MESSAGE_TYPE
 }
 
+type OutgoingRPCResponse_SomeIdentifier struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// 1 -> unknown
+	SomeNumber string `protobuf:"bytes,2,opt,name=someNumber,proto3" json:"someNumber,omitempty"`
+}
+
+func (x *OutgoingRPCResponse_SomeIdentifier) Reset() {
+	*x = OutgoingRPCResponse_SomeIdentifier{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_rpc_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *OutgoingRPCResponse_SomeIdentifier) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*OutgoingRPCResponse_SomeIdentifier) ProtoMessage() {}
+
+func (x *OutgoingRPCResponse_SomeIdentifier) ProtoReflect() protoreflect.Message {
+	mi := &file_rpc_proto_msgTypes[10]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use OutgoingRPCResponse_SomeIdentifier.ProtoReflect.Descriptor instead.
+func (*OutgoingRPCResponse_SomeIdentifier) Descriptor() ([]byte, []int) {
+	return file_rpc_proto_rawDescGZIP(), []int{6, 0}
+}
+
+func (x *OutgoingRPCResponse_SomeIdentifier) GetSomeNumber() string {
+	if x != nil {
+		return x.SomeNumber
+	}
+	return ""
+}
+
 var File_rpc_proto protoreflect.FileDescriptor
 
 //go:embed rpc.pb.raw
@@ -997,43 +1093,45 @@ func file_rpc_proto_rawDescGZIP() []byte {
 }
 
 var file_rpc_proto_enumTypes = make([]protoimpl.EnumInfo, 3)
-var file_rpc_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
+var file_rpc_proto_msgTypes = make([]protoimpl.MessageInfo, 11)
 var file_rpc_proto_goTypes = []interface{}{
-	(BugleRoute)(0),                      // 0: rpc.BugleRoute
-	(ActionType)(0),                      // 1: rpc.ActionType
-	(MessageType)(0),                     // 2: rpc.MessageType
-	(*StartAckMessage)(nil),              // 3: rpc.StartAckMessage
-	(*LongPollingPayload)(nil),           // 4: rpc.LongPollingPayload
-	(*IncomingRPCMessage)(nil),           // 5: rpc.IncomingRPCMessage
-	(*RPCMessageData)(nil),               // 6: rpc.RPCMessageData
-	(*OutgoingRPCMessage)(nil),           // 7: rpc.OutgoingRPCMessage
-	(*OutgoingRPCData)(nil),              // 8: rpc.OutgoingRPCData
-	(*OutgoingRPCMessage_Auth)(nil),      // 9: rpc.OutgoingRPCMessage.Auth
-	(*OutgoingRPCMessage_Data)(nil),      // 10: rpc.OutgoingRPCMessage.Data
-	(*OutgoingRPCMessage_Data_Type)(nil), // 11: rpc.OutgoingRPCMessage.Data.Type
-	(*EmptyArr)(nil),                     // 12: util.EmptyArr
-	(*Device)(nil),                       // 13: authentication.Device
-	(*ConfigVersion)(nil),                // 14: authentication.ConfigVersion
+	(BugleRoute)(0),                            // 0: rpc.BugleRoute
+	(ActionType)(0),                            // 1: rpc.ActionType
+	(MessageType)(0),                           // 2: rpc.MessageType
+	(*StartAckMessage)(nil),                    // 3: rpc.StartAckMessage
+	(*LongPollingPayload)(nil),                 // 4: rpc.LongPollingPayload
+	(*IncomingRPCMessage)(nil),                 // 5: rpc.IncomingRPCMessage
+	(*RPCMessageData)(nil),                     // 6: rpc.RPCMessageData
+	(*OutgoingRPCMessage)(nil),                 // 7: rpc.OutgoingRPCMessage
+	(*OutgoingRPCData)(nil),                    // 8: rpc.OutgoingRPCData
+	(*OutgoingRPCResponse)(nil),                // 9: rpc.OutgoingRPCResponse
+	(*OutgoingRPCMessage_Auth)(nil),            // 10: rpc.OutgoingRPCMessage.Auth
+	(*OutgoingRPCMessage_Data)(nil),            // 11: rpc.OutgoingRPCMessage.Data
+	(*OutgoingRPCMessage_Data_Type)(nil),       // 12: rpc.OutgoingRPCMessage.Data.Type
+	(*OutgoingRPCResponse_SomeIdentifier)(nil), // 13: rpc.OutgoingRPCResponse.SomeIdentifier
+	(*EmptyArr)(nil),                           // 14: util.EmptyArr
+	(*Device)(nil),                             // 15: authentication.Device
+	(*ConfigVersion)(nil),                      // 16: authentication.ConfigVersion
 }
 var file_rpc_proto_depIdxs = []int32{
 	5,  // 0: rpc.LongPollingPayload.data:type_name -> rpc.IncomingRPCMessage
-	12, // 1: rpc.LongPollingPayload.heartbeat:type_name -> util.EmptyArr
+	14, // 1: rpc.LongPollingPayload.heartbeat:type_name -> util.EmptyArr
 	3,  // 2: rpc.LongPollingPayload.ack:type_name -> rpc.StartAckMessage
-	12, // 3: rpc.LongPollingPayload.startRead:type_name -> util.EmptyArr
+	14, // 3: rpc.LongPollingPayload.startRead:type_name -> util.EmptyArr
 	0,  // 4: rpc.IncomingRPCMessage.bugleRoute:type_name -> rpc.BugleRoute
 	2,  // 5: rpc.IncomingRPCMessage.messageType:type_name -> rpc.MessageType
-	13, // 6: rpc.IncomingRPCMessage.mobile:type_name -> authentication.Device
-	13, // 7: rpc.IncomingRPCMessage.browser:type_name -> authentication.Device
+	15, // 6: rpc.IncomingRPCMessage.mobile:type_name -> authentication.Device
+	15, // 7: rpc.IncomingRPCMessage.browser:type_name -> authentication.Device
 	1,  // 8: rpc.RPCMessageData.action:type_name -> rpc.ActionType
-	13, // 9: rpc.OutgoingRPCMessage.mobile:type_name -> authentication.Device
-	10, // 10: rpc.OutgoingRPCMessage.data:type_name -> rpc.OutgoingRPCMessage.Data
-	9,  // 11: rpc.OutgoingRPCMessage.auth:type_name -> rpc.OutgoingRPCMessage.Auth
-	12, // 12: rpc.OutgoingRPCMessage.emptyArr:type_name -> util.EmptyArr
+	15, // 9: rpc.OutgoingRPCMessage.mobile:type_name -> authentication.Device
+	11, // 10: rpc.OutgoingRPCMessage.data:type_name -> rpc.OutgoingRPCMessage.Data
+	10, // 11: rpc.OutgoingRPCMessage.auth:type_name -> rpc.OutgoingRPCMessage.Auth
+	14, // 12: rpc.OutgoingRPCMessage.emptyArr:type_name -> util.EmptyArr
 	1,  // 13: rpc.OutgoingRPCData.action:type_name -> rpc.ActionType
-	14, // 14: rpc.OutgoingRPCMessage.Auth.configVersion:type_name -> authentication.ConfigVersion
+	16, // 14: rpc.OutgoingRPCMessage.Auth.configVersion:type_name -> authentication.ConfigVersion
 	0,  // 15: rpc.OutgoingRPCMessage.Data.bugleRoute:type_name -> rpc.BugleRoute
-	11, // 16: rpc.OutgoingRPCMessage.Data.messageTypeData:type_name -> rpc.OutgoingRPCMessage.Data.Type
-	12, // 17: rpc.OutgoingRPCMessage.Data.Type.emptyArr:type_name -> util.EmptyArr
+	12, // 16: rpc.OutgoingRPCMessage.Data.messageTypeData:type_name -> rpc.OutgoingRPCMessage.Data.Type
+	14, // 17: rpc.OutgoingRPCMessage.Data.Type.emptyArr:type_name -> util.EmptyArr
 	2,  // 18: rpc.OutgoingRPCMessage.Data.Type.messageType:type_name -> rpc.MessageType
 	19, // [19:19] is the sub-list for method output_type
 	19, // [19:19] is the sub-list for method input_type
@@ -1123,7 +1221,7 @@ func file_rpc_proto_init() {
 			}
 		}
 		file_rpc_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OutgoingRPCMessage_Auth); i {
+			switch v := v.(*OutgoingRPCResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1135,7 +1233,7 @@ func file_rpc_proto_init() {
 			}
 		}
 		file_rpc_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OutgoingRPCMessage_Data); i {
+			switch v := v.(*OutgoingRPCMessage_Auth); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1147,6 +1245,18 @@ func file_rpc_proto_init() {
 			}
 		}
 		file_rpc_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*OutgoingRPCMessage_Data); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_rpc_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*OutgoingRPCMessage_Data_Type); i {
 			case 0:
 				return &v.state
@@ -1158,16 +1268,29 @@ func file_rpc_proto_init() {
 				return nil
 			}
 		}
+		file_rpc_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*OutgoingRPCResponse_SomeIdentifier); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	file_rpc_proto_msgTypes[0].OneofWrappers = []interface{}{}
 	file_rpc_proto_msgTypes[1].OneofWrappers = []interface{}{}
+	file_rpc_proto_msgTypes[6].OneofWrappers = []interface{}{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_rpc_proto_rawDesc,
 			NumEnums:      3,
-			NumMessages:   9,
+			NumMessages:   11,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/libgm/gmproto/rpc.pb.raw b/libgm/gmproto/rpc.pb.raw
index 7eb1165..51bf571 100644
Binary files a/libgm/gmproto/rpc.pb.raw and b/libgm/gmproto/rpc.pb.raw differ
diff --git a/libgm/gmproto/rpc.proto b/libgm/gmproto/rpc.proto
index 493f20b..f6946d9 100644
--- a/libgm/gmproto/rpc.proto
+++ b/libgm/gmproto/rpc.proto
@@ -85,6 +85,16 @@ message OutgoingRPCData {
     string sessionID = 6;
 }
 
+message OutgoingRPCResponse {
+    message SomeIdentifier {
+        // 1 -> unknown
+        string someNumber = 2;
+    }
+
+    // This is not present for AckMessage responses, only for SendMessage
+    optional string timestamp = 2;
+}
+
 enum BugleRoute {
     Unknown = 0;
     DataEvent = 19;
diff --git a/libgm/http.go b/libgm/http.go
new file mode 100644
index 0000000..b49de6d
--- /dev/null
+++ b/libgm/http.go
@@ -0,0 +1,76 @@
+package libgm
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"mime"
+	"net/http"
+
+	"google.golang.org/protobuf/proto"
+
+	"go.mau.fi/mautrix-gmessages/libgm/events"
+	"go.mau.fi/mautrix-gmessages/libgm/pblite"
+	"go.mau.fi/mautrix-gmessages/libgm/util"
+)
+
+const ContentTypeProtobuf = "application/x-protobuf"
+const ContentTypePBLite = "application/json+protobuf"
+
+func (c *Client) makeProtobufHTTPRequest(url string, data proto.Message, contentType string) (*http.Response, error) {
+	var body []byte
+	var err error
+	switch contentType {
+	case ContentTypeProtobuf:
+		body, err = proto.Marshal(data)
+	case ContentTypePBLite:
+		body, err = pblite.Marshal(data)
+	default:
+		return nil, fmt.Errorf("unknown request content type %s", contentType)
+	}
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequest(http.MethodPost, url, bytes.NewReader(body))
+	if err != nil {
+		return nil, err
+	}
+	util.BuildRelayHeaders(req, contentType, "*/*")
+	res, reqErr := c.http.Do(req)
+	if reqErr != nil {
+		return res, reqErr
+	}
+	return res, nil
+}
+
+func typedHTTPResponse[T proto.Message](resp *http.Response, err error) (parsed T, retErr error) {
+	if err != nil {
+		retErr = err
+		return
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		retErr = events.HTTPError{Resp: resp}
+		return
+	}
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		retErr = fmt.Errorf("failed to read response body: %w", err)
+		return
+	}
+	contentType, _, err := mime.ParseMediaType(resp.Header.Get("Content-Type"))
+	if err != nil {
+		retErr = fmt.Errorf("failed to parse content-type: %w", err)
+		return
+	}
+	parsed = parsed.ProtoReflect().New().Interface().(T)
+	switch contentType {
+	case ContentTypeProtobuf:
+		retErr = proto.Unmarshal(body, parsed)
+	case ContentTypePBLite:
+		retErr = pblite.Unmarshal(body, parsed)
+	default:
+		retErr = fmt.Errorf("unknown content type %s in response", contentType)
+	}
+	return
+}
diff --git a/libgm/pair.go b/libgm/pair.go
index 3e57189..ab09a1e 100644
--- a/libgm/pair.go
+++ b/libgm/pair.go
@@ -1,12 +1,9 @@
 package libgm
 
 import (
-	"bytes"
 	"crypto/x509"
 	"encoding/base64"
 	"fmt"
-	"io"
-	"net/http"
 
 	"github.com/google/uuid"
 	"google.golang.org/protobuf/proto"
@@ -68,26 +65,13 @@ func (c *Client) completePairing(data *gmproto.PairedData) {
 	}
 }
 
-func (c *Client) makeRelayRequest(url string, body []byte) (*http.Response, error) {
-	req, err := http.NewRequest("POST", url, bytes.NewReader(body))
-	if err != nil {
-		return nil, err
-	}
-	util.BuildRelayHeaders(req, "application/x-protobuf", "*/*")
-	res, reqErr := c.http.Do(req)
-	if reqErr != nil {
-		return res, reqErr
-	}
-	return res, nil
-}
-
 func (c *Client) RegisterPhoneRelay() (*gmproto.RegisterPhoneRelayResponse, error) {
 	key, err := x509.MarshalPKIXPublicKey(c.AuthData.RefreshKey.GetPublicKey())
 	if err != nil {
 		return nil, err
 	}
 
-	body, err := proto.Marshal(&gmproto.AuthenticationContainer{
+	payload := &gmproto.AuthenticationContainer{
 		AuthMessage: &gmproto.AuthMessage{
 			RequestID:     uuid.NewString(),
 			Network:       &util.Network,
@@ -102,50 +86,24 @@ func (c *Client) RegisterPhoneRelay() (*gmproto.RegisterPhoneRelayResponse, erro
 				},
 			},
 		},
-	})
-	if err != nil {
-		return nil, err
 	}
-	relayResponse, reqErr := c.makeRelayRequest(util.RegisterPhoneRelayURL, body)
-	if reqErr != nil {
-		return nil, err
-	}
-	responseBody, err := io.ReadAll(relayResponse.Body)
-	if err != nil {
-		return nil, err
-	}
-	relayResponse.Body.Close()
-	res := &gmproto.RegisterPhoneRelayResponse{}
-	err = proto.Unmarshal(responseBody, res)
-	if err != nil {
-		return nil, err
-	}
-	return res, err
+	return typedHTTPResponse[*gmproto.RegisterPhoneRelayResponse](
+		c.makeProtobufHTTPRequest(util.RegisterPhoneRelayURL, payload, ContentTypeProtobuf),
+	)
 }
 
 func (c *Client) RefreshPhoneRelay() (string, error) {
-	body, err := proto.Marshal(&gmproto.AuthenticationContainer{
+	payload := &gmproto.AuthenticationContainer{
 		AuthMessage: &gmproto.AuthMessage{
 			RequestID:        uuid.NewString(),
 			Network:          &util.Network,
 			TachyonAuthToken: c.AuthData.TachyonAuthToken,
 			ConfigVersion:    util.ConfigMessage,
 		},
-	})
-	if err != nil {
-		return "", err
 	}
-	relayResponse, err := c.makeRelayRequest(util.RefreshPhoneRelayURL, body)
-	if err != nil {
-		return "", err
-	}
-	responseBody, err := io.ReadAll(relayResponse.Body)
-	defer relayResponse.Body.Close()
-	if err != nil {
-		return "", err
-	}
-	res := &gmproto.RefreshPhoneRelayResponse{}
-	err = proto.Unmarshal(responseBody, res)
+	res, err := typedHTTPResponse[*gmproto.RefreshPhoneRelayResponse](
+		c.makeProtobufHTTPRequest(util.RefreshPhoneRelayURL, payload, ContentTypeProtobuf),
+	)
 	if err != nil {
 		return "", err
 	}
@@ -157,61 +115,31 @@ func (c *Client) RefreshPhoneRelay() (string, error) {
 }
 
 func (c *Client) GetWebEncryptionKey() (*gmproto.WebEncryptionKeyResponse, error) {
-	body, err := proto.Marshal(&gmproto.AuthenticationContainer{
+	payload := &gmproto.AuthenticationContainer{
 		AuthMessage: &gmproto.AuthMessage{
 			RequestID:        uuid.NewString(),
 			TachyonAuthToken: c.AuthData.TachyonAuthToken,
 			ConfigVersion:    util.ConfigMessage,
 		},
-	})
-	if err != nil {
-		return nil, err
 	}
-	webKeyResponse, err := c.makeRelayRequest(util.GetWebEncryptionKeyURL, body)
-	if err != nil {
-		return nil, err
-	}
-	responseBody, err := io.ReadAll(webKeyResponse.Body)
-	defer webKeyResponse.Body.Close()
-	if err != nil {
-		return nil, err
-	}
-	parsedResponse := &gmproto.WebEncryptionKeyResponse{}
-	err = proto.Unmarshal(responseBody, parsedResponse)
-	if err != nil {
-		return nil, err
-	}
-	return parsedResponse, nil
+	return typedHTTPResponse[*gmproto.WebEncryptionKeyResponse](
+		c.makeProtobufHTTPRequest(util.GetWebEncryptionKeyURL, payload, ContentTypeProtobuf),
+	)
 }
 
 func (c *Client) Unpair() (*gmproto.RevokeRelayPairingResponse, error) {
 	if c.AuthData.TachyonAuthToken == nil || c.AuthData.Browser == nil {
 		return nil, nil
 	}
-	payload, err := proto.Marshal(&gmproto.RevokeRelayPairingRequest{
+	payload := &gmproto.RevokeRelayPairingRequest{
 		AuthMessage: &gmproto.AuthMessage{
 			RequestID:        uuid.NewString(),
 			TachyonAuthToken: c.AuthData.TachyonAuthToken,
 			ConfigVersion:    util.ConfigMessage,
 		},
 		Browser: c.AuthData.Browser,
-	})
-	if err != nil {
-		return nil, err
 	}
-	revokeResp, err := c.makeRelayRequest(util.RevokeRelayPairingURL, payload)
-	if err != nil {
-		return nil, err
-	}
-	responseBody, err := io.ReadAll(revokeResp.Body)
-	defer revokeResp.Body.Close()
-	if err != nil {
-		return nil, err
-	}
-	parsedResponse := &gmproto.RevokeRelayPairingResponse{}
-	err = proto.Unmarshal(responseBody, parsedResponse)
-	if err != nil {
-		return nil, err
-	}
-	return parsedResponse, nil
+	return typedHTTPResponse[*gmproto.RevokeRelayPairingResponse](
+		c.makeProtobufHTTPRequest(util.RevokeRelayPairingURL, payload, ContentTypeProtobuf),
+	)
 }
diff --git a/libgm/rpc.go b/libgm/rpc.go
index 4cd1cc2..dbc90c4 100644
--- a/libgm/rpc.go
+++ b/libgm/rpc.go
@@ -8,7 +8,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"net/http"
 	"time"
 
 	"github.com/google/uuid"
@@ -23,7 +22,6 @@ import (
 
 type RPC struct {
 	client   *Client
-	http     *http.Client
 	conn     io.ReadCloser
 	stopping bool
 	listenID int
@@ -49,7 +47,7 @@ func (r *RPC) ListenReceiveMessages(loggedIn bool) {
 			return
 		}
 		r.client.Logger.Debug().Msg("Starting new long-polling request")
-		receivePayload, err := pblite.Marshal(&gmproto.ReceiveMessagesRequest{
+		payload := &gmproto.ReceiveMessagesRequest{
 			Auth: &gmproto.AuthMessage{
 				RequestID:        listenReqID,
 				TachyonAuthToken: r.client.AuthData.TachyonAuthToken,
@@ -58,19 +56,11 @@ func (r *RPC) ListenReceiveMessages(loggedIn bool) {
 			Unknown: &gmproto.ReceiveMessagesRequest_UnknownEmptyObject2{
 				Unknown: &gmproto.ReceiveMessagesRequest_UnknownEmptyObject1{},
 			},
-		})
-		if err != nil {
-			panic(fmt.Errorf("Error marshaling request: %v", err))
 		}
-		req, err := http.NewRequest(http.MethodPost, util.ReceiveMessagesURL, bytes.NewReader(receivePayload))
+		resp, err := r.client.makeProtobufHTTPRequest(util.ReceiveMessagesURL, payload, ContentTypePBLite)
 		if err != nil {
-			panic(fmt.Errorf("Error creating request: %v", err))
-		}
-		util.BuildRelayHeaders(req, "application/json+protobuf", "*/*")
-		resp, reqErr := r.http.Do(req)
-		if reqErr != nil {
 			if loggedIn {
-				r.client.triggerEvent(&events.ListenTemporaryError{Error: reqErr})
+				r.client.triggerEvent(&events.ListenTemporaryError{Error: err})
 			}
 			errored = true
 			r.client.Logger.Err(err).Msg("Error making listen request, retrying in 5 seconds")
@@ -203,16 +193,3 @@ func (r *RPC) CloseConnection() {
 		r.conn = nil
 	}
 }
-
-func (r *RPC) sendMessageRequest(url string, payload []byte) (*http.Response, error) {
-	req, err := http.NewRequest("POST", url, bytes.NewReader(payload))
-	if err != nil {
-		return nil, fmt.Errorf("error creating request: %w", err)
-	}
-	util.BuildRelayHeaders(req, "application/json+protobuf", "*/*")
-	resp, reqErr := r.client.http.Do(req)
-	if reqErr != nil {
-		return nil, fmt.Errorf("error making request: %w", err)
-	}
-	return resp, reqErr
-}
diff --git a/libgm/session_handler.go b/libgm/session_handler.go
index 8cd2e02..e03ace1 100644
--- a/libgm/session_handler.go
+++ b/libgm/session_handler.go
@@ -10,8 +10,6 @@ import (
 	"golang.org/x/exp/slices"
 	"google.golang.org/protobuf/proto"
 
-	"go.mau.fi/mautrix-gmessages/libgm/pblite"
-
 	"go.mau.fi/mautrix-gmessages/libgm/gmproto"
 	"go.mau.fi/mautrix-gmessages/libgm/util"
 )
@@ -41,7 +39,9 @@ func (s *SessionHandler) sendMessageNoResponse(params SendMessageParams) error {
 		return err
 	}
 
-	_, err = s.client.rpc.sendMessageRequest(util.SendMessageURL, payload)
+	_, err = typedHTTPResponse[*gmproto.OutgoingRPCResponse](
+		s.client.makeProtobufHTTPRequest(util.SendMessageURL, payload, ContentTypePBLite),
+	)
 	return err
 }
 
@@ -52,10 +52,12 @@ func (s *SessionHandler) sendAsyncMessage(params SendMessageParams) (<-chan *Inc
 	}
 
 	ch := s.waitResponse(requestID)
-	_, reqErr := s.client.rpc.sendMessageRequest(util.SendMessageURL, payload)
-	if reqErr != nil {
+	_, err = typedHTTPResponse[*gmproto.OutgoingRPCResponse](
+		s.client.makeProtobufHTTPRequest(util.SendMessageURL, payload, ContentTypePBLite),
+	)
+	if err != nil {
 		s.cancelResponse(requestID, ch)
-		return nil, reqErr
+		return nil, err
 	}
 	return ch, nil
 }
@@ -142,7 +144,7 @@ type SendMessageParams struct {
 	MessageType  gmproto.MessageType
 }
 
-func (s *SessionHandler) buildMessage(params SendMessageParams) (string, []byte, error) {
+func (s *SessionHandler) buildMessage(params SendMessageParams) (string, proto.Message, error) {
 	var requestID string
 	var err error
 	sessionID := s.client.sessionHandler.sessionID
@@ -199,9 +201,7 @@ func (s *SessionHandler) buildMessage(params SendMessageParams) (string, []byte,
 		return "", nil, err
 	}
 
-	var marshaledMessage []byte
-	marshaledMessage, err = pblite.Marshal(message)
-	return requestID, marshaledMessage, err
+	return requestID, message, err
 }
 
 func (s *SessionHandler) queueMessageAck(messageID string) {
@@ -243,7 +243,7 @@ func (s *SessionHandler) sendAckRequest() {
 			Device:    s.client.AuthData.Browser,
 		}
 	}
-	ackMessagePayload := &gmproto.AckMessageRequest{
+	payload := &gmproto.AckMessageRequest{
 		AuthData: &gmproto.AuthMessage{
 			RequestID:        uuid.NewString(),
 			TachyonAuthToken: s.client.AuthData.TachyonAuthToken,
@@ -252,13 +252,13 @@ func (s *SessionHandler) sendAckRequest() {
 		EmptyArr: &gmproto.EmptyArr{},
 		Acks:     ackMessages,
 	}
-	jsonData, err := pblite.Marshal(ackMessagePayload)
+	_, err := typedHTTPResponse[*gmproto.OutgoingRPCResponse](
+		s.client.makeProtobufHTTPRequest(util.AckMessagesURL, payload, ContentTypePBLite),
+	)
 	if err != nil {
-		panic(err)
+		// TODO retry?
+		s.client.Logger.Err(err).Strs("message_ids", dataToAck).Msg("Failed to send acks")
+	} else {
+		s.client.Logger.Debug().Strs("message_ids", dataToAck).Msg("Sent acks")
 	}
-	_, err = s.client.rpc.sendMessageRequest(util.AckMessagesURL, jsonData)
-	if err != nil {
-		panic(err)
-	}
-	s.client.Logger.Debug().Strs("message_ids", dataToAck).Msg("Sent acks")
 }