init

wasmbuild/_stubs/bufio_vectorised_unix.go

@@ -0,0 +1,32 @@
+// Substituted in via `go build -overlay` for the js/wasm build ONLY.
+//
+// Upstream common/bufio/vectorised_unix.go (build tag `!windows`) implements the
+// syscall-based vectorised writers using golang.org/x/sys/unix (Iovec, writev,
+// sendmsg). Those types are referenced by the cross-platform vectorised.go, so
+// the symbols must exist for the package to compile, but the code never runs
+// under wasm (a browser has no raw socket fds). This provides the same
+// identifiers with unix stripped out; the write paths return os.ErrInvalid.
+
+package bufio
+
+import (
+	"os"
+
+	"github.com/sagernet/sing/common/buf"
+	M "github.com/sagernet/sing/common/metadata"
+)
+
+// syscallVectorisedWriterFields is embedded into SyscallVectorisedWriter and
+// SyscallVectorisedPacketWriter (declared in vectorised.go). No fields are
+// needed for the wasm stub.
+type syscallVectorisedWriterFields struct{}
+
+func (w *SyscallVectorisedWriter) WriteVectorised(buffers []*buf.Buffer) error {
+	buf.ReleaseMulti(buffers)
+	return os.ErrInvalid
+}
+
+func (w *SyscallVectorisedPacketWriter) WriteVectorisedPacket(buffers []*buf.Buffer, destination M.Socksaddr) error {
+	buf.ReleaseMulti(buffers)
+	return os.ErrInvalid
+}