Some updates. Need to think about how to not rewrite what ldns and libevent have already done

src/common/getdns_context.c

@@ -141,13 +141,17 @@ getdns_context_create(
     bool                   set_from_os
 )
 {
-    UNUSED_PARAM(set_from_os);
     getdns_context_t result = NULL;
 
     if (context == NULL) {
         return GETDNS_RETURN_GENERIC_ERROR;
     }
 
+    getdns_dict *outbound_reqs = getdns_dict_create();
+    if (outbound_reqs == NULL) {
+        return GETDNS_RETURN_GENERIC_ERROR;
+    }
+
     /** default init **/
     result = malloc(sizeof(struct getdns_context_t));
     result->resolution_type = GETDNS_CONTEXT_RECURSING;
@@ -168,6 +172,9 @@ getdns_context_create(
     result->edns_version = 0;
     result->edns_do_bit = 0;
 
+    result->event_base = NULL;
+    result->outbound_reqs = outbound_reqs; 
+
     result->update_callback = NULL;
     result->memory_allocator = malloc;
     result->memory_deallocator = free;
@@ -207,6 +214,8 @@ getdns_context_destroy(
     getdns_list_destroy(context->dnssec_trust_anchors);
     getdns_list_destroy(context->upstream_list);
     
+    getdns_dict_destroy(context->outbound_reqs);
+
     free(context);
     return;
 } /* getdns_context_destroy */

src/common/getdns_context.h

@@ -40,7 +40,8 @@ struct getdns_context_t {
 
     /* Event loop */
     struct event_base* event_base;
-
+    
+    getdns_dict *outbound_reqs;
 } ;
 
 #endif

src/common/getdns_general.c

@@ -28,7 +28,25 @@
  * THE SOFTWARE.
  */
 
-#include <getdns_core_only.h>
+#include <getdns_context.h>
+#include <ldns/ldns.h>
+
+/* outbound request */
+typedef struct getdns_outbound_req {
+
+    /* stub or recursive */
+    uint16_t req_type;
+    /* transaction id */
+    getdns_transaction_t transaction_id;
+    /* callback */
+    getdns_callback_t callback;
+    /* user arg to pass to callback */
+    void* userarg;
+    /* list of servers this can send to */
+    getdns_list *upstream;
+    
+
+} getdns_async_req;
 
 /* stuff to make it compile pedantically */
 #define UNUSED_PARAM(x) ((void)(x))
@@ -47,13 +65,22 @@ getdns_general(
   getdns_callback_t          callback
 )
 {
-    UNUSED_PARAM(context);
+    /* Default to zero */
+    if (transaction_id != NULL) {
+        *transaction_id = 0;
+    }
+    if (context->event_base == NULL ||
+        callback == NULL) {
+        /* Can't do async without an event loop
+         * or callback
+         */
+        return GETDNS_RETURN_GENERIC_ERROR;
+    }
+
     UNUSED_PARAM(name);
     UNUSED_PARAM(request_type);
     UNUSED_PARAM(extensions);
     UNUSED_PARAM(userarg);
-    UNUSED_PARAM(transaction_id);
-    UNUSED_PARAM(callback);
     return GETDNS_RETURN_GOOD;
 } /* getdns_general */