ch07 finished

- I'm giving up, can't make `curlAsync.run` work correctly.

src/main/scala/ch07/curlAsync/main.scala

@@ -11,17 +11,17 @@ def run: Unit = // I got rid of command line arguments, easier to run.
   println("initializing loop")
   given ExecutionContext = EventLoop // used by onComplete
 
-  val urls = Seq(
-    "https://www.example.com",
-    "https://duckduckgo.com",
-    "https://www.google.com"
+  val urls = Seq( // more than 1 URL causes double-free or corrupt size vs prev size
+    "https://www.example.com"
+    // "https://duckduckgo.com",
+    // "https://www.google.com"
   )
 
-  val resp = Zone:
+  val _ = Zone:
     for url <- urls do // asynchronously make GET requests to multiple websites
       val resp = Curl.startRequest(GET, url)
 
-      resp.onComplete:
+      resp.onComplete: // this does not trigger!
         case Success(data) =>
           println(s"got response for ${url} - length ${data.body.size}")
           println(s"headers:")
@@ -31,3 +31,115 @@ def run: Unit = // I got rid of command line arguments, easier to run.
 
   EventLoop.run()
   println("done running async event loop with multi curl requests")
+
+// ❯ ./project
+// initializing loop
+// initializing curl
+// initialized multiHandle Ptr@65471d9ac720
+// setting up curl socket callback with multiHandle
+// setting up curl timer callback with multiHandle
+// initializing libuv loop timer with curl timer callback: scala.scalanative.unsafe.CFuncPtr3@5822c462
+// uv_timer_init returned 0
+// done initializing
+// initializing handle Ptr@65471d9afec0 for request 1
+// easy_setopt returned 0
+// easy_setopt returned 0
+// easy_setopt returned 0
+// easy_setopt returned 0
+// easy_setopt returned 0
+// easy_setopt returned 0
+// start_timer called with timeout 0 ms
+// setting effective timeout to 1
+// starting timer
+// uv_timer_start returned 0
+// done handling messages
+// request initialized
+// uv_prepare_init returned 0
+// in timeout callback
+// uv_run returned 0
+// socketCB called with action 1
+// initializing handle for socket Ptr@d
+// uv_poll_init_socket returned 0
+// multi_assign returned 0
+// starting poll with events 1
+// start_timer called with timeout 1 ms
+// starting timer
+// uv_timer_start returned 0
+// done handling messages
+// on_timer fired, 1 sockets running
+// in timeout callback
+// start_timer called with timeout 2 ms
+// starting timer
+// uv_timer_start returned 0
+// done handling messages
+// on_timer fired, 1 sockets running
+// ready_for_curl fired with status 0 and events 1
+// socketCB called with action 4
+// stopping poll
+// start_timer called with timeout 1 ms
+// starting timer
+// uv_timer_start returned 0
+// done handling messages
+// socketCB called with action 2
+// initializing handle for socket Ptr@d
+// uv_poll_init_socket returned 0
+// multi_assign returned 0
+// starting poll with events 2
+// start_timer called with timeout 0 ms
+// setting effective timeout to 1
+// starting timer
+// uv_timer_start returned 0
+// done handling messages
+// multi_socket_action 0
+// in timeout callback
+// start_timer called with timeout 200 ms
+// starting timer
+// uv_timer_start returned 0
+// done handling messages
+// on_timer fired, 1 sockets running
+// ready_for_curl fired with status 0 and events 2
+// socketCB called with action 1
+// starting poll with events 1
+// multi_socket_action 0
+// in timeout callback
+// on_timer fired, 1 sockets running
+// ready_for_curl fired with status 0 and events 1
+// multi_socket_action 0
+// ready_for_curl fired with status 0 and events 1
+// multi_socket_action 0
+// ready_for_curl fired with status 0 and events 1
+// multi_socket_action 0
+// ready_for_curl fired with status 0 and events 1
+// multi_socket_action 0
+// ready_for_curl fired with status 0 and events 1
+// multi_socket_action 0
+// ready_for_curl fired with status 0 and events 1
+// multi_socket_action 0
+// ready_for_curl fired with status 0 and events 1
+// multi_socket_action 0
+// ready_for_curl fired with status 0 and events 1
+// req 1: got header line of size 1 x 13
+// req 1: got header line of size 1 x 13
+// req 1: got header line of size 1 x 31
+// req 1: got header line of size 1 x 40
+// req 1: got header line of size 1 x 37
+// req 1: got header line of size 1 x 31
+// req 1: got header line of size 1 x 40
+// req 1: got header line of size 1 x 46
+// req 1: got header line of size 1 x 26
+// req 1: got header line of size 1 x 23
+// req 1: got header line of size 1 x 14
+// req 1: got header line of size 1 x 22
+// req 1: got header line of size 1 x 2
+// req 1: got data of size 1 x 1256
+// socketCB called with action 4
+// stopping poll
+// start_timer called with timeout 1 ms
+// starting timer
+// uv_timer_start returned 0
+// done handling messages
+// multi_socket_action 0
+// in timeout callback
+// on_timer fired, 0 sockets running
+// uv_run returned 0
+// done running async event loop with multi curl requests