From: Paul Hänsch <paul@plutz.net>
Date: Thu, 19 Mar 2026 23:38:11 +0000 (+0100)
Subject: get-address-info "gai_error" macro
X-Git-Url: https://git.plutz.net/?a=commitdiff_plain;h=6f859ff65ef2615072007267323643df4d79656e;p=quickjs_net

get-address-info "gai_error" macro
---

diff --git a/socket.c b/socket.c
index 84cc20b..10e7d1f 100644
--- a/socket.c
+++ b/socket.c
@@ -13,6 +13,9 @@
 
 #define countof(x) ( sizeof(x) / sizeof(x[0]) )
 #define libc_error(ctx) ( JS_ThrowInternalError(ctx, "%s", strerror(errno)) )
+#define  gai_error(ctx) ( JS_ThrowInternalError(ctx, "%s", gai_strerror(gai_err)) )
+
+static int gai_err;
 
 static JSValue js_os_fork(
   JSContext *ctx, JSValueConst this, int argc, JSValueConst *argv
@@ -54,13 +57,13 @@ static int net_addrinfo(
   struct sockaddr_storage * addr
 ) {
   struct addrinfo hints = { .ai_family = family, .ai_socktype = type };
-  struct addrinfo * info = NULL; int gai_error = 0;
+  struct addrinfo * info = NULL;
 
-  if (!(gai_error = getaddrinfo( host, port, &hints, &info ))) {
+  if (!(gai_err = getaddrinfo( host, port, &hints, &info ))) {
     memcpy(addr, info->ai_addr, info->ai_addrlen);
   }
   freeaddrinfo(info);
-  return gai_error;
+  return gai_err;
 }
 
 static int net_ip_listen(SocketData *so, int type) {
@@ -188,7 +191,7 @@ static JSValue js_sock_send(
   SocketData * data = JS_GetOpaque2(ctx, this, socket_cid);
   // XXX: how portable is MSG_NOSIGNAL ? (POSIX.1-2008)
   uint8_t *buf; size_t len = 0; int flags = MSG_NOSIGNAL;
-  const char *host, *port; int gai_err = 0;
+  const char *host, *port;
   struct sockaddr * to;
 
   // destHost and destPort may be given for UDP sockets
@@ -199,7 +202,7 @@ static JSValue js_sock_send(
       data->bind.ss_family, data->type, host, port, &(data->peer)
     );
     JS_FreeCString(ctx, host); JS_FreeCString(ctx, port);
-    if (gai_err) return libc_error(ctx);
+    if (gai_err) return gai_error(ctx);
     to = (struct sockaddr *) &(data->peer);
 
   // otherwise use default peer address
@@ -420,7 +423,7 @@ static JSValue js_sock_listen(
   JSContext *ctx, JSValueConst this, int argc, JSValueConst *argv
 ) {
   SocketData *data = JS_GetOpaque2(ctx, this, socket_cid);
-  const char *host = NULL, *port = NULL; int gai_err = 0;
+  const char *host = NULL, *port = NULL;
   const size_t l_sun_path = sizeof( ((struct sockaddr_un){}).sun_path );
   size_t plen; JSValue ret = JS_UNDEFINED;
 
@@ -439,7 +442,7 @@ static JSValue js_sock_listen(
     if ( (gai_err = net_addrinfo(
       data->bind.ss_family, data->type, host, port, &(data->bind)
     )) )
-      ret = JS_ThrowInternalError(ctx, "%s", gai_strerror(gai_err));
+      ret = gai_error(ctx);
     else if ( net_ip_listen(data, data->type) )
       ret = libc_error(ctx);
   }
@@ -453,7 +456,7 @@ static JSValue js_sock_connect(
   JSContext *ctx, JSValueConst this, int argc, JSValueConst *argv
 ) {
   SocketData *data = JS_GetOpaque2(ctx, this, socket_cid);
-  const char *host, *port; int gai_err = 0;
+  const char *host, *port;
   const size_t l_sun_path = sizeof( ((struct sockaddr_un){}).sun_path );
   size_t plen; JSValue ret = JS_UNDEFINED;
 
@@ -472,7 +475,7 @@ static JSValue js_sock_connect(
     if ( (gai_err = net_addrinfo(
       data->bind.ss_family, data->type, host, port, &(data->peer)
     )) )
-      ret = JS_ThrowInternalError(ctx, "%s", gai_strerror(gai_err));
+      ret = gai_error(ctx);
     else if ( net_ip_connect(data, data->type) )
       ret = libc_error(ctx);
   }