Exemple Spring Boot — InterAppCallService
// Jamais en HTTP direct — toujours via SLY
String ts = String.valueOf(Instant.now()
.getEpochSecond());
restClient.post()
.uri("http://sly:8080/fiscal/api/v1/rates/ipres")
.header("X-Tenant-Id", TenantContext.get())
.header("X-Source-App", "dynors-jaraaf")
.header("X-Sly-Timestamp", ts)
.header("X-Sly-Signature", signer.sign(ts))
.retrieve()
.body(FiscalRates.class);