Fix SSLWantWriteError bug with python's SSL sockets (#11256)

* Fix Python's SSL sockets erroring out

* Implement SSLWantWriteError & SSLWantReadError ignoring

* Forgot to import Errors

---------

Co-authored-by: yourfriend <[email protected]>

std/python/_std/sys/net/Socket.hx

@@ -31,6 +31,7 @@ import python.lib.socket.Socket in PSocket;
 import python.lib.Socket in PSocketModule;
 import python.lib.socket.Address in PAddress;
 import python.lib.Select;
+import python.lib.ssl.Errors;
 
 private class SocketInput extends haxe.io.Input {
 	var __s:PSocket;
@@ -55,7 +56,11 @@ private class SocketInput extends haxe.io.Input {
 		var r;
 		var data = buf.getData();
 		try {
-			r = __s.recv(len, 0);
+			try {
+				r = __s.recv(len, 0);
+			} catch(e:SSLWantReadError) {
+				return 0;
+			}
 			for (i in pos...(pos + r.length)) {
 				data.set(i, r[i - pos]);
 			}
@@ -93,7 +98,12 @@ private class SocketOutput extends haxe.io.Output {
 		try {
 			var data = buf.getData();
 			var payload = python.Syntax.code("{0}[{1}:{1}+{2}]", data, pos, len);
-			var r = __s.send(payload, 0);
+			var r = 0;
+			try {
+				r = __s.send(payload, 0);
+			} catch(e:SSLWantWriteError) {
+				return 0;
+			}
 			return r;
 		} catch (e:BlockingIOError) {
 			throw Blocked;

std/python/lib/ssl/Errors.hx

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C)2005-2019 Haxe Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+package python.lib.ssl;
+
+@:pythonImport("ssl", "SSLWantReadError")
+extern class SSLWantReadError {}
+
+@:pythonImport("ssl", "SSLWantWriteError")
+extern class SSLWantWriteError {}