feat: files go in 4 MB pieces, several at once and each retried on its own, so they pass a proxy like Cloudflare and survive a bad link (0.0.8)

internal/server/server.go

@@ -53,10 +53,10 @@ type Server struct {
 	tunnelMu      sync.Mutex // serializes port changes
 	tunnelPort    atomic.Int64
 
-	stats     statCache   // last load sample per agent, for the status page
-	relays    speedRelays // speed tests that run through the browser
-	meters    speedMeters // byte counts of the speed tests under way
-	fsStreams fsStreams   // files on their way between a browser and an agent
+	stats  statCache   // last load sample per agent, for the status page
+	relays speedRelays // speed tests that run through the browser
+	meters speedMeters // byte counts of the speed tests under way
+	xfers  xfers       // files on their way between a browser and an agent
 }
 
 // New builds the server, parsing embedded templates.
@@ -230,7 +230,10 @@ func (s *Server) Handler() http.Handler {
 
 	// Panel file manager (admin-only).
 	mux.Handle("GET /api/panel/agents/{id}/fs/download", s.requireAdmin(s.handleFSDownload))
-	mux.Handle("POST /api/panel/agents/{id}/fs/upload", s.requireAdmin(s.handleFSUpload))
+	mux.Handle("POST /api/panel/agents/{id}/fs/upload", s.requireAdmin(s.handleFSUploadStart))
+	mux.Handle("PUT /api/panel/fs/xfer/{xid}/{i}", s.requireAdmin(s.handleXferPut))
+	mux.Handle("POST /api/panel/fs/xfer/{xid}/cancel", s.requireAdmin(s.handleXferCancel))
+	mux.Handle("GET /api/panel/fs/xfer/{xid}/result", s.requireAdmin(s.handleXferResult))
 	mux.Handle("POST /api/panel/agents/{id}/fs/{op}", s.requireAdmin(s.handleFSOp))
 
 	// Machine status (admin).
@@ -259,8 +262,8 @@ func (s *Server) Handler() http.Handler {
 	mux.HandleFunc("POST /api/agent/speed/up", s.handleSpeedUp)
 	mux.HandleFunc("GET /api/agent/speed/relay/down", s.handleSpeedRelayDown)
 	mux.HandleFunc("POST /api/agent/speed/relay/up", s.handleSpeedRelayUp)
-	mux.HandleFunc("GET /api/agent/fs/stream/{sid}", s.handleAgentFSStreamGet)
-	mux.HandleFunc("POST /api/agent/fs/stream/{sid}", s.handleAgentFSStreamPost)
+	mux.HandleFunc("GET /api/agent/fs/xfer/{xid}/{i}", s.handleAgentXferGet)
+	mux.HandleFunc("POST /api/agent/fs/xfer/{xid}/{i}", s.handleAgentXferPost)
 
 	return s.logRequests(mux)
 }