Diff: mbed-os/features/netsocket/nsapi_dns.h

Revision:

0:8fdf9a60065b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/features/netsocket/nsapi_dns.h	Wed Oct 10 00:33:53 2018 +0000
@@ -0,0 +1,233 @@
+
+/** \addtogroup netsocket */
+/** @{*/
+/* nsapi_dns.h
+ * Original work Copyright (c) 2013 Henry Leinen (henry[dot]leinen [at] online [dot] de)
+ * Modified work Copyright (c) 2015 ARM Limited
+ *
+ * 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.
+ */
+#ifndef NSAPI_DNS_H
+#define NSAPI_DNS_H
+
+#include "nsapi_types.h"
+#ifdef __cplusplus
+#include "netsocket/NetworkStack.h"
+#endif
+
+#ifndef __cplusplus
+
+
+/** Query a domain name server for an IP address of a given hostname
+ *
+ *  @param stack    Network stack as target for DNS query
+ *  @param host     Hostname to resolve
+ *  @param addr     Destination for the host address
+ *  @param version  IP version to resolve
+ *  @return         0 on success, negative error code on failure
+ *                  NSAPI_ERROR_DNS_FAILURE indicates the host could not be found
+ */
+nsapi_error_t nsapi_dns_query(nsapi_stack_t *stack, const char *host,
+                              nsapi_addr_t *addr, nsapi_version_t version);
+
+/** Query a domain name server for multiple IP address of a given hostname
+ *
+ *  @param stack      Network stack as target for DNS query
+ *  @param host       Hostname to resolve
+ *  @param addr       Array for the host addresses
+ *  @param addr_count Number of addresses allocated in the array
+ *  @param version    IP version to resolve
+ *  @return           Number of addresses found on success, negative error code on failure
+ *                    NSAPI_ERROR_DNS_FAILURE indicates the host could not be found
+ */
+nsapi_size_or_error_t nsapi_dns_query_multiple(nsapi_stack_t *stack, const char *host,
+                                               nsapi_addr_t *addr, nsapi_size_t addr_count, nsapi_version_t version);
+
+/** Add a domain name server to list of servers to query
+ *
+ *  @param addr     Destination for the host address
+ *  @return         0 on success, negative error code on failure
+ */
+nsapi_error_t nsapi_dns_add_server(nsapi_addr_t addr);
+
+
+#else
+
+typedef mbed::Callback<nsapi_error_t (int delay_ms, mbed::Callback<void()> user_cb)> call_in_callback_cb_t;
+
+/** Query a domain name server for an IP address of a given hostname
+ *
+ *  @param stack    Network stack as target for DNS query
+ *  @param host     Hostname to resolve
+ *  @param addr     Destination for the host address
+ *  @param version  IP version to resolve (defaults to NSAPI_IPv4)
+ *  @return         0 on success, negative error code on failure
+ *                  NSAPI_ERROR_DNS_FAILURE indicates the host could not be found
+ */
+nsapi_error_t nsapi_dns_query(NetworkStack *stack, const char *host,
+                              SocketAddress *addr, nsapi_version_t version = NSAPI_IPv4);
+
+/** Query a domain name server for an IP address of a given hostname
+ *
+ *  @param stack    Network stack as target for DNS query
+ *  @param host     Hostname to resolve
+ *  @param callback Callback that is called for result
+ *  @param version  IP version to resolve (defaults to NSAPI_IPv4)
+ *  @return         0 on success, negative error code on failure or an unique id that
+ *                  represents the hostname translation operation and can be passed to
+ *                  cancel, NSAPI_ERROR_DNS_FAILURE indicates the host could not be found
+ */
+nsapi_error_t nsapi_dns_query_async(NetworkStack *stack, const char *host,
+                                    NetworkStack::hostbyname_cb_t callback, call_in_callback_cb_t call_in_cb,
+                                    nsapi_version_t version = NSAPI_IPv4);
+
+/** Query a domain name server for an IP address of a given hostname (asynchronous)
+ *
+ *  @param stack    Network stack as target for DNS query
+ *  @param host     Hostname to resolve
+ *  @param addr     Destination for the host address
+ *  @param version  IP version to resolve (defaults to NSAPI_IPv4)
+ *  @return         0 on success, negative error code on failure
+ *                  NSAPI_ERROR_DNS_FAILURE indicates the host could not be found
+ */
+extern "C" nsapi_error_t nsapi_dns_query(nsapi_stack_t *stack, const char *host,
+                                         nsapi_addr_t *addr, nsapi_version_t version = NSAPI_IPv4);
+
+/** Query a domain name server for an IP address of a given hostname
+ *
+ *  @param stack    Network stack as target for DNS query
+ *  @param host     Hostname to resolve
+ *  @param addr     Destination for the host address
+ *  @param version  IP version to resolve (defaults to NSAPI_IPv4)
+ *  @return         0 on success, negative error code on failure
+ *                  NSAPI_ERROR_DNS_FAILURE indicates the host could not be found
+ */
+template <typename S>
+nsapi_error_t nsapi_dns_query(S *stack, const char *host,
+                              SocketAddress *addr, nsapi_version_t version = NSAPI_IPv4)
+{
+    return nsapi_dns_query(nsapi_create_stack(stack), host, addr, version);
+}
+
+/** Query a domain name server for multiple IP address of a given hostname
+ *
+ *  @param stack      Network stack as target for DNS query
+ *  @param host       Hostname to resolve
+ *  @param addr       Array for the host addresses
+ *  @param addr_count Number of addresses allocated in the array
+ *  @param version    IP version to resolve (defaults to NSAPI_IPv4)
+ *  @return           Number of addresses found on success, negative error code on failure
+ *                    NSAPI_ERROR_DNS_FAILURE indicates the host could not be found
+ */
+nsapi_size_or_error_t nsapi_dns_query_multiple(NetworkStack *stack, const char *host,
+                                               SocketAddress *addr, nsapi_size_t addr_count, nsapi_version_t version = NSAPI_IPv4);
+
+/** Query a domain name server for an IP address of a given hostname (asynchronous)
+ *
+ *  @param stack      Network stack as target for DNS query
+ *  @param host       Hostname to resolve
+ *  @param callback   Callback that is called for result
+ *  @param addr_count Number of addresses allocated in the array
+ *  @param version    IP version to resolve (defaults to NSAPI_IPv4)
+ *  @return           0 on success, negative error code on failure or an unique id that
+                      represents the hostname translation operation and can be passed to
+ *                    cancel, NSAPI_ERROR_DNS_FAILURE indicates the host could not be found
+ */
+nsapi_size_or_error_t nsapi_dns_query_multiple_async(NetworkStack *stack, const char *host,
+                                                     NetworkStack::hostbyname_cb_t callback, nsapi_size_t addr_count,
+                                                     call_in_callback_cb_t call_in_cb, nsapi_version_t version = NSAPI_IPv4);
+
+/** Query a domain name server for multiple IP address of a given hostname
+ *
+ *  @param stack      Network stack as target for DNS query
+ *  @param host       Hostname to resolve
+ *  @param addr       Array for the host addresses
+ *  @param addr_count Number of addresses allocated in the array
+ *  @param version    IP version to resolve (defaults to NSAPI_IPv4)
+ *  @return           Number of addresses found on success, negative error code on failure
+ *                    NSAPI_ERROR_DNS_FAILURE indicates the host could not be found
+ */
+extern "C" nsapi_size_or_error_t nsapi_dns_query_multiple(nsapi_stack_t *stack, const char *host,
+                                                          nsapi_addr_t *addr, nsapi_size_t addr_count, nsapi_version_t version = NSAPI_IPv4);
+
+
+/** Query a domain name server for multiple IP address of a given hostname
+ *
+ *  @param stack      Network stack as target for DNS query
+ *  @param host       Hostname to resolve
+ *  @param addr       Array for the host addresses
+ *  @param addr_count Number of addresses allocated in the array
+ *  @param version    IP version to resolve (defaults to NSAPI_IPv4)
+ *  @return           Number of addresses found on success, negative error code on failure
+ *                    NSAPI_ERROR_DNS_FAILURE indicates the host could not be found
+ */
+template <typename S>
+nsapi_size_or_error_t nsapi_dns_query_multiple(S *stack, const char *host,
+                                               SocketAddress *addr, nsapi_size_t addr_count, nsapi_version_t version = NSAPI_IPv4)
+{
+    return nsapi_dns_query_multiple(nsapi_create_stack(stack),
+                                    host, addr, addr_count, version);
+}
+
+/** Cancels asynchronous hostname translation
+  *
+  *  When translation is cancelled, callback will not be called.
+  *
+  *  @param id       Unique id of the hostname translation operation
+  *  @return         0 on success, negative error code on failure
+  */
+nsapi_error_t nsapi_dns_query_async_cancel(nsapi_error_t id);
+
+/** Set a call in callback
+ *
+ *  Can be used to provide an application specific call in callback to
+ *  DNS resolver. When callback is set it is used instead of stack
+ *  specific call in callbacks.
+ *
+ *  @param callback  Callback
+ */
+void nsapi_dns_call_in_set(call_in_callback_cb_t callback);
+
+/** Add a domain name server to list of servers to query
+ *
+ *  @param addr     Destination for the host address
+ *  @return         0 on success, negative error code on failure
+ */
+extern "C" nsapi_error_t nsapi_dns_add_server(nsapi_addr_t addr);
+
+/** Add a domain name server to list of servers to query
+ *
+ *  @param addr     Destination for the host address
+ *  @return         0 on success, negative error code on failure
+ */
+static inline nsapi_error_t nsapi_dns_add_server(const SocketAddress &address)
+{
+    return nsapi_dns_add_server(address.get_addr());
+}
+
+/** Add a domain name server to list of servers to query
+ *
+ *  @param addr     Destination for the host address
+ *  @return         0 on success, negative error code on failure
+ */
+static inline nsapi_error_t nsapi_dns_add_server(const char *address)
+{
+    return nsapi_dns_add_server(SocketAddress(address));
+}
+
+
+#endif
+
+#endif
+
+/** @}*/