[taler-quickjs-tart] 01/04: make os.fetchHttp return cancellation function

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ivan-avalos pushed a commit to branch master
in repository quickjs-tart.

commit f7b6b6bbafd589774e7f439c12e92415db0cae50
Author: Iván Ávalos <avalos@disroot.org>
AuthorDate: Fri May 24 12:06:20 2024 -0600

    make os.fetchHttp return cancellation function
---
 quickjs/quickjs-libc.c | 41 +++++++++++++++++++++++++++++++++++++----
 1 file changed, 37 insertions(+), 4 deletions(-)

diff --git a/quickjs/quickjs-libc.c b/quickjs/quickjs-libc.c
index 0002468..855e16e 100644
--- a/quickjs/quickjs-libc.c
+++ b/quickjs/quickjs-libc.c
@@ -22,6 +22,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+#include "quickjs.h"
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdarg.h>
@@ -2286,6 +2287,21 @@ static void handle_http_resp(void *cls, struct 
JSHttpResponseInfo *resp_info)
     return;
 }
 
+static JSValue cancel_http_req(JSContext *ctx, JSValueConst this_val, int 
argc, JSValueConst *argv)
+{
+    JSRuntime *rt = JS_GetRuntime(ctx);
+    JSThreadState *ts = JS_GetRuntimeOpaque(rt);
+    int req_id;
+    int ret;
+
+    JS_ToInt32(ctx, &req_id, argv[0]);
+
+    // cancel HTTP request
+    ret = ts->http_client_impl->req_cancel(ts->http_client_impl->cls, req_id);
+
+    return JS_NewInt32(ctx, ret);
+}
+
 static void
 free_http_headers(JSContext *ctx, char **headers)
 {
@@ -2345,7 +2361,11 @@ exception:
 
 
 /**
- * fetchHttp(url, { method, headers, body }): Promise<Response>
+ * fetchHttp(url, { method, headers, body }): {
+ *   requestId: number,
+ *   response: Promise<Response>,
+ *   cancelFn: () => void,
+ * }
  */
 static JSValue js_os_fetchHttp(JSContext *ctx, JSValueConst this_val,
                                  int argc, JSValueConst *argv)
@@ -2470,13 +2490,26 @@ static JSValue js_os_fetchHttp(JSContext *ctx, 
JSValueConst this_val,
 
     list_add_tail(&req_context->link, &ts->http_requests);
 
-    ret_val = JS_NewPromiseCapability(ctx, resolving_funs);
-    if (JS_IsException(ret_val)) {
-        goto done;
+    // requestId: number
+    JSValue requestId = JS_NewInt32(ctx, ret);
+
+    // promise: Promise<Response>
+    JSValue promise = JS_NewPromiseCapability(ctx, resolving_funs);
+    if (JS_IsException(promise)) {
+        goto exception;
     }
     req_context->request_id = ret;
     req_context->resolve_func = resolving_funs[0];
     req_context->reject_func = resolving_funs[1];
+
+    // cancelFn: () => void
+    JSValue cancelFn = JS_NewCFunction(ctx, &cancel_http_req, "cancelFn", 1);
+
+    ret_val = JS_NewObject(ctx);
+    JS_SetPropertyStr(ctx, ret_val, "requestId", requestId);
+    JS_SetPropertyStr(ctx, ret_val, "promise", promise);
+    JS_SetPropertyStr(ctx, ret_val, "cancelFn", cancelFn);
+
 done:
     free_http_headers(ctx, req.request_headers);
     JS_FreeValue(ctx, method);

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