Use ssh fork (with smaller channel window size)

psiphon/server/config.go

@@ -32,10 +32,10 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/Psiphon-Inc/crypto/ssh"
 	"github.com/Psiphon-Labs/psiphon-tunnel-core/psiphon"
 	"github.com/Psiphon-Labs/psiphon-tunnel-core/psiphon/common"
 	"golang.org/x/crypto/nacl/box"
-	"golang.org/x/crypto/ssh"
 )
 
 const (

psiphon/server/tunnelServer.go

@@ -30,9 +30,9 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/Psiphon-Inc/crypto/ssh"
 	"github.com/Psiphon-Labs/psiphon-tunnel-core/psiphon"
 	"github.com/Psiphon-Labs/psiphon-tunnel-core/psiphon/common"
-	"golang.org/x/crypto/ssh"
 )
 
 const (

psiphon/server/udp.go

@@ -30,8 +30,8 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/Psiphon-Inc/crypto/ssh"
 	"github.com/Psiphon-Labs/psiphon-tunnel-core/psiphon/common"
-	"golang.org/x/crypto/ssh"
 )
 
 // setUDPChannel sets the single UDP channel for this sshClient.

psiphon/tunnel.go

@@ -32,10 +32,10 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/Psiphon-Inc/crypto/ssh"
 	regen "github.com/Psiphon-Inc/goregen"
 	"github.com/Psiphon-Labs/psiphon-tunnel-core/psiphon/common"
 	"github.com/Psiphon-Labs/psiphon-tunnel-core/psiphon/transferstats"
-	"golang.org/x/crypto/ssh"
 )
 
 // Tunneler specifies the interface required by components that use a tunnel.