1 files changed, 126 insertions, 0 deletions
diff --git a/test/core/client_channel/parse_address_with_named_scope_id_test.cc b/test/core/client_channel/parse_address_with_named_scope_id_test.cc
new file mode 100644
index 0000000000..bfafa74517
--- /dev/null
+++ b/test/core/client_channel/parse_address_with_named_scope_id_test.cc
@@ -0,0 +1,126 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/ext/filters/client_channel/parse_address.h"
+#include "src/core/lib/iomgr/sockaddr.h"
+#include "src/core/lib/iomgr/socket_utils.h"
+
+#include <net/if.h>
+#include <string.h>
+#ifdef GRPC_HAVE_UNIX_SOCKET
+#include <sys/un.h>
+#endif
+
+#include <grpc/grpc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/host_port.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/socket_utils.h"
+#include "test/core/util/test_config.h"
+
+static void test_grpc_parse_ipv6_parity_with_getaddrinfo(
+    const char* target, const struct sockaddr_in6 result_from_getaddrinfo) {
+  // Get the sockaddr that gRPC's ipv6 resolver resolves this too.
+  grpc_core::ExecCtx exec_ctx;
+  grpc_uri* uri = grpc_uri_parse(target, 0);
+  grpc_resolved_address addr;
+  GPR_ASSERT(1 == grpc_parse_ipv6(uri, &addr));
+  grpc_sockaddr_in6* result_from_grpc_parser =
+      reinterpret_cast<grpc_sockaddr_in6*>(addr.addr);
+  // Compare the sockaddr returned from gRPC's ipv6 resolver with that returned
+  // from getaddrinfo.
+  GPR_ASSERT(result_from_grpc_parser->sin6_family == AF_INET6);
+  GPR_ASSERT(result_from_getaddrinfo.sin6_family == AF_INET6);
+  GPR_ASSERT(memcmp(&result_from_grpc_parser->sin6_addr,
+                    &result_from_getaddrinfo.sin6_addr, sizeof(in6_addr)) == 0);
+  GPR_ASSERT(result_from_grpc_parser->sin6_scope_id ==
+             result_from_getaddrinfo.sin6_scope_id);
+  GPR_ASSERT(result_from_grpc_parser->sin6_scope_id != 0);
+  // TODO: compare sin6_flow_info fields? parse_ipv6 zero's this field as is.
+  // Cleanup
+  grpc_uri_destroy(uri);
+}
+
+struct sockaddr_in6 resolve_with_gettaddrinfo(const char* uri_text) {
+  grpc_uri* uri = grpc_uri_parse(uri_text, 0);
+  char* host = nullptr;
+  char* port = nullptr;
+  gpr_split_host_port(uri->path, &host, &port);
+  struct addrinfo hints;
+  memset(&hints, 0, sizeof(hints));
+  hints.ai_family = AF_INET6;
+  hints.ai_socktype = SOCK_STREAM;
+  hints.ai_flags = AI_NUMERICHOST;
+  struct addrinfo* result;
+  int res = getaddrinfo(host, port, &hints, &result);
+  if (res != 0) {
+    gpr_log(GPR_ERROR,
+            "getaddrinfo failed to resolve host:%s port:%s. Error: %d.", host,
+            port, res);
+    abort();
+  }
+  size_t num_addrs_from_getaddrinfo = 0;
+  for (struct addrinfo* resp = result; resp != nullptr; resp = resp->ai_next) {
+    num_addrs_from_getaddrinfo++;
+  }
+  GPR_ASSERT(num_addrs_from_getaddrinfo == 1);
+  GPR_ASSERT(result->ai_family == AF_INET6);
+  struct sockaddr_in6 out =
+      *reinterpret_cast<struct sockaddr_in6*>(result->ai_addr);
+  // Cleanup
+  freeaddrinfo(result);
+  gpr_free(host);
+  gpr_free(port);
+  grpc_uri_destroy(uri);
+  return out;
+}
+
+int main(int argc, char** argv) {
+  grpc_test_init(argc, argv);
+  grpc_init();
+  char* arbitrary_interface_name = static_cast<char*>(gpr_zalloc(IF_NAMESIZE));
+  // Per RFC 3493, an interface index is a "small positive integer starts at 1".
+  // Probe candidate interface index numbers until we find one that the
+  // system recognizes, and then use that for the test.
+  for (size_t i = 1; i < 65536; i++) {
+    if (if_indextoname(i, arbitrary_interface_name) != nullptr) {
+      gpr_log(
+          GPR_DEBUG,
+          "Found interface at index %d named %s. Will use this for the test",
+          (int)i, arbitrary_interface_name);
+      break;
+    }
+  }
+  GPR_ASSERT(strlen(arbitrary_interface_name) > 0);
+  char* target = nullptr;
+  gpr_asprintf(&target, "ipv6:[fe80::1234%%%s]:12345",
+               arbitrary_interface_name);
+  struct sockaddr_in6 result_from_getaddrinfo =
+      resolve_with_gettaddrinfo(target);
+  // Run the test
+  gpr_log(GPR_DEBUG,
+          "Run test_grpc_parse_ipv6_parity_with_getaddrinfo with target: %s",
+          target);
+  test_grpc_parse_ipv6_parity_with_getaddrinfo(target, result_from_getaddrinfo);
+  // Cleanup
+  gpr_free(target);
+  gpr_free(arbitrary_interface_name);
+  grpc_shutdown();
+}