Return localhost from NanostackInterface::get_ip_address()

Seppo Takalo · Seppo Takalo · commit 3d5962db48b3 · 2016-11-16T19:07:23.000+02:00
For NetworkStack::gethostbyname() to properly validate the
IP address version, we must return a valid address from
Networkstack::get_ip_address().
diff --git a/features/nanostack/FEATURE_NANOSTACK/nanostack-interface/NanostackInterface.cpp b/features/nanostack/FEATURE_NANOSTACK/nanostack-interface/NanostackInterface.cpp
@@ -457,8 +457,10 @@ NanostackInterface * NanostackInterface::get_stack()
 
 const char * NanostackInterface::get_ip_address()
 {
-    // Unsupported
-    return NULL;
+    // Must result a valid IPv6 address
+    // For gethostbyname() to detect IP version.
+    static const char localhost[] = "::";
+    return localhost;
 }
 
 nsapi_error_t NanostackInterface::socket_open(void **handle, nsapi_protocol_t protocol)

Original file line number	Diff line number	Diff line change
`@@ -457,8 +457,10 @@ NanostackInterface * NanostackInterface::get_stack()`
`457`	`457`
`458`	`458`	`const char * NanostackInterface::get_ip_address()`
`459`	`459`	`{`
`460`		`- // Unsupported`
`461`		`- return NULL;`
	`460`	`+ // Must result a valid IPv6 address`
	`461`	`+ // For gethostbyname() to detect IP version.`
	`462`	`+ static const char localhost[] = "::";`
	`463`	`+ return localhost;`
`462`	`464`	`}`
`463`	`465`
`464`	`466`	`nsapi_error_t NanostackInterface::socket_open(void **handle, nsapi_protocol_t protocol)`