WIP: request and connection machine

Signed-off-by: Ava Affine <ava@sunnypup.io>

muninn.c

@@ -1,6 +1,13 @@
 #include <ngx_config.h>
 #include <ngx_core.h>
 
+typedef struct {
+    ngx_uint_t   read_state;
+    ngx_log_t   *log;
+    ngx_pool_t  *pool;
+    ngx_chain_t *output;
+} mun_dns_request;
+
 static ngx_command_t  ngx_muninn_commands[] = {};
 
 static ngx_core_module_t  ngx_muninn_module_ctx = {
@@ -24,4 +31,39 @@ ngx_module_t  ngx_muninn_core_module = {
     NGX_MODULE_V1_PADDING
 };
 
+static void (*mun_read_handler_list[])(ngx_event_t *) = {
+    // list of function pointers
+};
 
+static ngx_uint_t mun_read_handler_adjacency[][7] = {
+    /* Entries:
+     * { NGX_OK       next handler
+     *   NGX_ERROR    next handler
+     *   NGX_AGAIN    next handler
+     *   NGX_BUSY     next handler
+     *   NGX_DONE     next handler
+     *   NGX_DECLINED next handler
+     *   NGX_ABORT    next handler }
+     *
+     * next handler = index into mun_read_handler_list
+     * ALL INDEXES BETWEEN THIS AND mun_read_handler_list MUST Match
+     */
+};
+
+
+// configuration directives to make a configuration interface
+
+// postconfiguration hook that actually does the work of setting up an event loop
+//   - calls ngx_create_listening based on sockaddr and socklen
+//   - sets listening->handler (see ngx_http_init_connection)
+//   - sets listening->pool_size
+//   - sets all this shit (see ngx_http_add_listening)
+
+// listening-> init connection handler
+// close connection function for error handling
+// set up read event handler for conn->read->handler
+// set up write event handler for conn->write->handler
+// make a new request obj and set c->data
+
+// figure out how a read is actually done
+// figure out how a write is actually done