Diagnóstico de Cloudflare R2

Verificando credenciales:
Account ID: 59dacfc6bd...ea44 (longitud: 32)
Access Key: 2ca7b68780...b2ee (longitud: 32)
Secret Key: 93083a07af...15cb (longitud: 64)
Bucket: speedy

Verificando extensiones PHP:
cURL: ✅ Habilitado
OpenSSL: ✅ Habilitado

Endpoint construido:
URL: https://59dacfc6bd799d5c0a9f77e5be29ea44.r2.cloudflarestorage.com/speedy/

Prueba 1: Verificando conectividad básica
HTTP Code: 400
✅ Conexión establecida

Prueba 2: Probando autenticación AWS Signature V4
HTTP Code: 200
✅ AUTENTICACIÓN EXITOSA!
Respuesta:

HTTP/1.1 200 OK
Date: Thu, 12 Nov 2026 17:43:17 GMT
Content-Type: application/xml
Content-Length: 362244
Connection: keep-alive
Vary: Origin
Server: cloudflare
CF-RAY: a597568b2821469b-DFW

<?xml version="1.0" encoding="UTF-8"?><ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><Name>speedy</Name><Contents><Key>imagenes/.DS_Store</Key><Size>6148</Size><LastModified>2026-09-26T02:14:13.261Z</LastModified><Owner><ID>59dacfc6bd799d5c0a9f77e5be29ea44</ID><DisplayName>59dacfc6

Prueba 3: Intentando listar buckets
HTTP Code: 403
Respuesta:

<?xml version="1.0" encoding="UTF-8"?><Error><Code>SignatureDoesNotMatch</Code><Message>The request signature we calculated does not match the signature you provided. Check your secret access key and signing method.</Message><StringToSign>AWS4-HMAC-SHA256
20261112T174317Z
20261112/auto/s3/aws4_request
1f038462a6609b3b5148c223186640f1650cdc5164a9957f2e853b4af0d1e4fd</StringToSign><StringToSignBytes>41 57 53 34 2d 48 4d 41 43 2d 53 48 41 32 35 36 0a 32 30 32 36 31 31 31 32 54 31 37 34 33 31 37 5a 0a 32 30 32 36 31 31 31 32 2f 61 75 74 6f 2f 73 33 2f 61 77 73 34 5f 72 65 71 75 65 73 74 0a 31 66 30 33 38 34 36 32 61 36 36 30 39 62 33 62 35 31 34 38 63 32 32 33 31 38 36 36 34 30 66 31 36 35 30 63 64 63 35 31 36 34 61 39 39 35 37 66 32 65 38 35 33 62 34 61 66 30 64 31 65 34 66 64</StringToSignBytes><CanonicalRequest>GET
/

host:59dacfc6bd799d5c0a9f77e5be29ea44.r2.cloudflarestorage.com
x-amz-content-sha256:UNSIGNED-PAYLOAD
x-amz-date:20261112T174317Z

host;x-amz-content-sha256;x-amz-date
UNSI