Add TinyGo support; Add Cloudflare Workers rendezvous server example

Requires the TinyGo fork found at https://github.com/ben-krieger/tinygo/tree/reflect-clear-and-more

Signed-off-by: Ben Krieger <ben.krieger@intel.com>

cbor/cbor.go

@@ -1243,15 +1243,10 @@ func (e *Encoder) encodeTextOrBinary(rv reflect.Value) error {
 
 		// Unaddressable arrays cannot be made into slices, so we must create a
 		// slice and copy contents into it
-		slice := reflect.MakeSlice(
-			reflect.SliceOf(rv.Type().Elem()),
-			rv.Len(),
-			rv.Len(),
-		)
-		if n := reflect.Copy(slice, rv); n != rv.Len() {
+		b = make([]byte, rv.Len())
+		if n := reflect.Copy(reflect.ValueOf(b), rv); n != rv.Len() {
 			panic("array contents were not fully copied into a slice for encoding")
 		}
-		b = slice.Bytes()
 	}
 
 	info := u64Bytes(uint64(len(b)))

di.go

@@ -137,7 +137,7 @@ func appStart(ctx context.Context, transport Transport, info any) (*VoucherHeade
 	// Make request
 	typ, resp, err := transport.Send(ctx, protocol.DIAppStartMsgType, msg, nil)
 	if err != nil {
-		return nil, fmt.Errorf("error sending DI.AppStart: %w", err)
+		return nil, fmt.Errorf("DI.AppStart: %w", err)
 	}
 	defer func() { _ = resp.Close() }()
 
@@ -296,7 +296,7 @@ func setHmac(ctx context.Context, transport Transport, hmac hash.Hash, ovh *Vouc
 	// Make request
 	typ, resp, err := transport.Send(ctx, protocol.DISetHmacMsgType, msg, nil)
 	if err != nil {
-		return fmt.Errorf("error sending DI.SetHMAC: %w", err)
+		return fmt.Errorf("DI.SetHMAC: %w", err)
 	}
 	defer func() { _ = resp.Close() }()