re-add raw datagrams, likely does not work yet

raw/types.go

@@ -0,0 +1,68 @@
+package raw
+
+import (
+	"sync"
+	"time"
+
+	"github.com/go-i2p/go-sam-go/common"
+	"github.com/go-i2p/i2pkeys"
+)
+
+// RawSession represents a raw session that can send and receive raw datagrams
+type RawSession struct {
+	*common.BaseSession
+	sam     *common.SAM
+	options []string
+	mu      sync.RWMutex
+	closed  bool
+}
+
+// RawReader handles incoming raw datagram reception
+type RawReader struct {
+	session   *RawSession
+	recvChan  chan *RawDatagram
+	errorChan chan error
+	closeChan chan struct{}
+	doneChan  chan struct{}
+	closed    bool
+	mu        sync.RWMutex
+}
+
+// RawWriter handles outgoing raw datagram transmission
+type RawWriter struct {
+	session *RawSession
+	timeout time.Duration
+}
+
+// RawDatagram represents an I2P raw datagram message
+type RawDatagram struct {
+	Data   []byte
+	Source i2pkeys.I2PAddr
+	Local  i2pkeys.I2PAddr
+}
+
+// RawAddr implements net.Addr for I2P raw addresses
+type RawAddr struct {
+	addr i2pkeys.I2PAddr
+}
+
+// RawConn implements net.PacketConn for I2P raw datagrams
+type RawConn struct {
+	session    *RawSession
+	reader     *RawReader
+	writer     *RawWriter
+	remoteAddr *i2pkeys.I2PAddr
+	mu         sync.RWMutex
+	closed     bool
+}
+
+// RawListener implements net.Listener for I2P raw connections
+type RawListener struct {
+	session    *RawSession
+	reader     *RawReader
+	acceptChan chan *RawConn
+	errorChan  chan error
+	closeChan  chan struct{}
+	closed     bool
+	mu         sync.RWMutex
+}