feat: Added send_const proc.

zmq/zmq.odin

@@ -27,6 +27,10 @@ foreign lib {
 	_connect :: proc(s: Socket, addr: cstring) -> c.int ---
 	@(link_name = "zmq_send")
 	_send :: proc(s: Socket, buf: rawptr, len: c.size_t, flags: Flags) -> c.int ---
+
+	@(link_name = "zmq_send_const")
+	_send_const :: proc(s: Socket, buf: rawptr, len: c.size_t, flags: Flags) -> c.int ---
+
 	@(link_name = "zmq_recv")
 	_recv :: proc(s: Socket, buf: rawptr, len: c.size_t, flags: Flags) -> c.int ---
 	@(link_name = "zmq_strerror")
@@ -114,18 +118,42 @@ send :: proc {
 	send_string,
 }
 
-send_bytes :: proc(s: Socket, buf: []u8, flags: Flags = Flags{}) -> (int, Error) {
+send_bytes :: proc(s: Socket, buf: []u8, flags: Flags = {}) -> (int, Error) {
 	n := _send(s, rawptr(&buf[0]), c.size_t(len(buf)), flags)
 	if n < 0 {
 		return -1, last_error()
 	}
-	return int(n), Error{}
+	return int(n), nil
 }
 
-send_string :: proc(s: Socket, buf: string, flags: Flags = Flags{}) -> (int, Error) {
+send_string :: proc(s: Socket, buf: string, flags: Flags = {}) -> (int, Error) {
 	return send_bytes(s, transmute([]u8)buf, flags)
 }
 
+send_const :: proc {
+	send_const_string,
+	send_const_bytes,
+}
+
+send_const_string :: proc(s: Socket, $str: string, flags: Flags = {}) -> (int, Error) {
+	n := _send_const(s, rawptr($str), len($str), flags)
+	if n < 0 {
+		return -1, last_error()
+	}
+
+	return int(n), nil
+}
+
+// buf must have @(rodata) or global lifetime.
+send_const_bytes :: proc(s: Socket, buf: []byte, flags: Flags = {}) -> (int, Error) {
+	n := _send_const(s, rawptr(&buf[0]), len(buf), flags)
+	if n < 0 {
+		return -1, last_error()
+	}
+
+	return int(n), nil
+}
+
 recv :: proc(s: Socket, buf: []u8, flags: Flags = Flags{}) -> (int, Error) {
 	n := _recv(s, rawptr(&buf[0]), c.size_t(len(buf)), flags)
 	if n < 0 {