apparently we do need that check?

README.md

@@ -62,8 +62,9 @@ The zig 0.11 HTTP client supports TLS 1.3 only. This, IMHO, is a reasonable
 restriction given its introduction 5 years ago, but is inflicting some short
 term pain on this project as AWS has not yet fully implemented the protocol. AWS has
 committed to [TLS 1.3 support across all services by the end of 2023](https://aws.amazon.com/blogs/security/faster-aws-cloud-connections-with-tls-1-3/), but many (most) services as of August 28th have not yet
-been upgraded. Proxy support is available in the client but is not yet implemented.
-In the meantime, it's possible that proxychains is your friend.
+been upgraded. Proxy support has been added, so to get to the services that
+do not yet support TLS 1.3, you can use something like [mitmproxy](https://mitmproxy.org/)
+to proxy those requests. Of course, this is not a good production solution...
 
 WebIdentityToken is not yet implemented.
 

src/aws.zig

@@ -934,6 +934,8 @@ fn buildPath(
                             replacement_writer,
                         );
                         const trimmed_replacement_val = std.mem.trim(u8, replacement_buffer.items, "\"");
+                        // NOTE: We have to encode here as it is a portion of the rest JSON protocol.
+                        // This makes the encoding in the standard library wrong
                         try uriEncode(trimmed_replacement_val, encoded_buffer.writer(), encode_slash);
                         try buffer.appendSlice(encoded_buffer.items);
                     }
@@ -1329,6 +1331,7 @@ const TestOptions = struct {
     server_port: ?u16 = null,
     server_remaining_requests: usize = 1,
     server_response: []const u8 = "unset",
+    server_response_status: std.http.Status = .ok,
     server_response_headers: [][2][]const u8 = &[_][2][]const u8{},
     server_response_transfer_encoding: ?std.http.TransferEncoding = null,
     request_body: []u8 = "",
@@ -1461,6 +1464,7 @@ fn processRequest(options: *TestOptions, server: *std.http.Server) !void {
 }
 
 fn serve(options: *TestOptions, res: *std.http.Server.Response) ![]const u8 {
+    res.status = options.server_response_status;
     for (options.server_response_headers) |h|
         try res.headers.append(h[0], h[1]);
     // try res.headers.append("content-length", try std.fmt.allocPrint(allocator, "{d}", .{server_response.len}));
@@ -1798,9 +1802,41 @@ test "rest_json_1_query_no_input: lambda listFunctions runtime" {
         call.response.functions.?[12].function_name.?,
     );
 }
-test "rest_json_1_work_with_lambda: lambda multiple functions (blank test)" {
-    // Replicating this test would not provide additional coverage. It is
-    // here for completeness only
+test "rest_json_1_work_with_lambda: lambda tagResource (only), to excercise zig issue 17015" {
+    const allocator = std.testing.allocator;
+    var test_harness = TestSetup.init(allocator, .{
+        .allocator = allocator,
+        .server_response = "",
+        .server_response_status = .no_content,
+        .server_response_headers = @constCast(&[_][2][]const u8{
+            .{ "Content-Type", "application/json" },
+            .{ "x-amzn-RequestId", "a521e152-6e32-4e67-9fb3-abc94e34551b" },
+        }),
+    });
+    defer test_harness.deinit();
+    const options = try test_harness.start();
+    const lambda = (Services(.{.lambda}){}).lambda;
+    var tags = try std.ArrayList(@typeInfo(try typeForField(lambda.tag_resource.Request, "tags")).Pointer.child).initCapacity(allocator, 1);
+    defer tags.deinit();
+    tags.appendAssumeCapacity(.{ .key = "Foo", .value = "Bar" });
+    const req = services.lambda.tag_resource.Request{ .resource = "arn:aws:lambda:us-west-2:550620852718:function:awsome-lambda-LambdaStackawsomeLambda", .tags = tags.items };
+    const call = try Request(lambda.tag_resource).call(req, options);
+    defer call.deinit();
+    test_harness.stop();
+    // Request expectations
+    try std.testing.expectEqual(std.http.Method.POST, test_harness.request_options.request_method);
+    try std.testing.expectEqualStrings(
+        \\{
+        \\    "Resource": "arn:aws:lambda:us-west-2:550620852718:function:awsome-lambda-LambdaStackawsomeLambda",
+        \\    "Tags": {
+        \\        "Foo": "Bar"
+        \\    }
+        \\}
+    , test_harness.request_options.request_body);
+    // Due to 17015, we see %253A instead of %3A
+    try std.testing.expectEqualStrings("/2017-03-31/tags/arn%3Aaws%3Alambda%3Aus-west-2%3A550620852718%3Afunction%3Aawsome-lambda-LambdaStackawsomeLambda", test_harness.request_options.request_target);
+    // Response expectations
+    try std.testing.expectEqualStrings("a521e152-6e32-4e67-9fb3-abc94e34551b", call.response_metadata.request_id);
 }
 test "ec2_query_no_input: EC2 describe regions" {
     const allocator = std.testing.allocator;

src/aws_http.zig

@@ -178,11 +178,39 @@ pub const AwsHttp = struct {
         // defer req.deinit();
 
         const method = std.meta.stringToEnum(std.http.Method, request_cp.method).?;
+        // std.Uri has a format function here that is used by start() (below)
+        // to escape the string we're about to send. But we don't want that...
+        // we need the control, because the signing above relies on the url above.
+        // We can't seem to have our cake and eat it too, because we need escaped
+        // ':' characters, but if we escape them, we'll get them double encoded.
+        // If we don't escape them, they won't get encoded at all. I believe the
+        // only answer may be to copy the Request.start function from the
+        // standard library and tweak the print statements such that they don't
+        // escape (but do still handle full uri (in proxy) vs path only (normal)
+        //
+        // Bug report filed here:
+        // https://github.com/ziglang/zig/issues/17015
+        //
+        // https://github.com/ziglang/zig/blob/0.11.0/lib/std/http/Client.zig#L538-L636
+        //
+        // Look at lines 551 and 553:
+        // https://github.com/ziglang/zig/blob/0.11.0/lib/std/http/Client.zig#L551
+        //
+        // This ends up executing the format function here:
+        // https://github.com/ziglang/zig/blob/0.11.0/lib/std/http/Client.zig#L551
+        //
+        // Which is basically the what we want, without the escaping on lines
+        // 249, 254, and 260:
+        // https://github.com/ziglang/zig/blob/0.11.0/lib/std/Uri.zig#L249
+        //
+        // const unescaped_url = try std.Uri.unescapeString(self.allocator, url);
+        // defer self.allocator.free(unescaped_url);
         var req = try cl.request(method, try std.Uri.parse(url), headers, .{});
         defer req.deinit();
         if (request_cp.body.len > 0)
             req.transfer_encoding = .{ .content_length = request_cp.body.len };
-        try req.start();
+        try @import("http_client_17015_issue.zig").start(&req);
+        // try req.start();
         if (request_cp.body.len > 0) {
             try req.writeAll(request_cp.body);
             try req.finish();
@@ -191,7 +219,7 @@ pub const AwsHttp = struct {
 
         // TODO: Timeout - is this now above us?
         log.debug(
-            "Request Complete. Response code {d}: {any}",
+            "Request Complete. Response code {d}: {?s}",
             .{ @intFromEnum(req.response.status), req.response.status.phrase() },
         );
         log.debug("Response headers:", .{});
@@ -248,7 +276,7 @@ fn addHeaders(allocator: std.mem.Allocator, headers: *std.ArrayList(base.Header)
     }
     try headers.append(.{ .name = "Accept", .value = "application/json" });
     try headers.append(.{ .name = "Host", .value = host });
-    try headers.append(.{ .name = "User-Agent", .value = "zig-aws 1.0, Powered by the AWS Common Runtime." });
+    try headers.append(.{ .name = "User-Agent", .value = "zig-aws 1.0" });
     if (!has_content_type)
         try headers.append(.{ .name = "Content-Type", .value = content_type });
     try headers.appendSlice(additional_headers);

src/aws_signing.zig

@@ -452,11 +452,30 @@ fn encodeParamPart(allocator: std.mem.Allocator, path: []const u8) ![]const u8 {
     }
     return encoded.toOwnedSlice();
 }
+
+// URI encode every byte except the unreserved characters:
+//   'A'-'Z', 'a'-'z', '0'-'9', '-', '.', '_', and '~'.
+//
+// The space character is a reserved character and must be encoded as "%20"
+// (and not as "+").
+//
+// Each URI encoded byte is formed by a '%' and the two-digit hexadecimal value of the byte.
+//
+// Letters in the hexadecimal value must be uppercase, for example "%1A".
+//
+// Encode the forward slash character, '/', everywhere except in the object key
+// name. For example, if the object key name is photos/Jan/sample.jpg, the
+// forward slash in the key name is not encoded.
+
 fn encodeUri(allocator: std.mem.Allocator, path: []const u8) ![]u8 {
     const reserved_characters = ";,/?:@&=+$#";
     const unreserved_marks = "-_.!~*'()";
     var encoded = try std.ArrayList(u8).initCapacity(allocator, path.len);
     defer encoded.deinit();
+    // if (std.mem.startsWith(u8, path, "/2017-03-31/tags/arn")) {
+    //     try encoded.appendSlice("/2017-03-31/tags/arn%25253Aaws%25253Alambda%25253Aus-west-2%25253A550620852718%25253Afunction%25253Aawsome-lambda-LambdaStackawsomeLambda");
+    //     return encoded.toOwnedSlice();
+    // }
     for (path) |c| {
         var should_encode = true;
         for (reserved_characters) |r|

src/http_client_17015_issue.zig

@@ -0,0 +1,155 @@
+const std = @import("std");
+const Uri = std.Uri;
+
+///////////////////////////////////////////////////////////////////////////
+/// This function imported from:
+/// https://github.com/ziglang/zig/blob/0.11.0/lib/std/http/Client.zig#L538-L636
+///
+/// The first commit of this file will be unchanged from 0.11.0 to more
+/// clearly indicate changes moving forward. The plan is to change
+/// only the two w.print lines for req.uri 16 and 18 lines down from this comment
+///////////////////////////////////////////////////////////////////////////
+/// Send the request to the server.
+pub fn start(req: *std.http.Client.Request) std.http.Client.Request.StartError!void {
+    var buffered = std.io.bufferedWriter(req.connection.?.data.writer());
+    const w = buffered.writer();
+
+    try w.writeAll(@tagName(req.method));
+    try w.writeByte(' ');
+
+    if (req.method == .CONNECT) {
+        try w.writeAll(req.uri.host.?);
+        try w.writeByte(':');
+        try w.print("{}", .{req.uri.port.?});
+    } else if (req.connection.?.data.proxied) {
+        // proxied connections require the full uri
+        try format(req.uri, "+/", .{}, w);
+    } else {
+        try format(req.uri, "/", .{}, w);
+    }
+
+    try w.writeByte(' ');
+    try w.writeAll(@tagName(req.version));
+    try w.writeAll("\r\n");
+
+    if (!req.headers.contains("host")) {
+        try w.writeAll("Host: ");
+        try w.writeAll(req.uri.host.?);
+        try w.writeAll("\r\n");
+    }
+
+    if (!req.headers.contains("user-agent")) {
+        try w.writeAll("User-Agent: zig/");
+        try w.writeAll(@import("builtin").zig_version_string);
+        try w.writeAll(" (std.http)\r\n");
+    }
+
+    if (!req.headers.contains("connection")) {
+        try w.writeAll("Connection: keep-alive\r\n");
+    }
+
+    if (!req.headers.contains("accept-encoding")) {
+        try w.writeAll("Accept-Encoding: gzip, deflate, zstd\r\n");
+    }
+
+    if (!req.headers.contains("te")) {
+        try w.writeAll("TE: gzip, deflate, trailers\r\n");
+    }
+
+    const has_transfer_encoding = req.headers.contains("transfer-encoding");
+    const has_content_length = req.headers.contains("content-length");
+
+    if (!has_transfer_encoding and !has_content_length) {
+        switch (req.transfer_encoding) {
+            .chunked => try w.writeAll("Transfer-Encoding: chunked\r\n"),
+            .content_length => |content_length| try w.print("Content-Length: {d}\r\n", .{content_length}),
+            .none => {},
+        }
+    } else {
+        if (has_content_length) {
+            const content_length = std.fmt.parseInt(u64, req.headers.getFirstValue("content-length").?, 10) catch return error.InvalidContentLength;
+
+            req.transfer_encoding = .{ .content_length = content_length };
+        } else if (has_transfer_encoding) {
+            const transfer_encoding = req.headers.getFirstValue("transfer-encoding").?;
+            if (std.mem.eql(u8, transfer_encoding, "chunked")) {
+                req.transfer_encoding = .chunked;
+            } else {
+                return error.UnsupportedTransferEncoding;
+            }
+        } else {
+            req.transfer_encoding = .none;
+        }
+    }
+
+    try w.print("{}", .{req.headers});
+
+    try w.writeAll("\r\n");
+
+    try buffered.flush();
+}
+
+///////////////////////////////////////////////////////////////////////////
+/// This function imported from:
+/// https://github.com/ziglang/zig/blob/0.11.0/lib/std/Uri.zig#L209-L264
+///
+/// The first commit of this file will be unchanged from 0.11.0 to more
+/// clearly indicate changes moving forward. The plan is to change
+/// only the writeEscapedPath call 42 lines down from this comment
+///////////////////////////////////////////////////////////////////////////
+pub fn format(
+    uri: Uri,
+    comptime fmt: []const u8,
+    options: std.fmt.FormatOptions,
+    writer: anytype,
+) @TypeOf(writer).Error!void {
+    _ = options;
+
+    const needs_absolute = comptime std.mem.indexOf(u8, fmt, "+") != null;
+    const needs_path = comptime std.mem.indexOf(u8, fmt, "/") != null or fmt.len == 0;
+    const needs_fragment = comptime std.mem.indexOf(u8, fmt, "#") != null;
+
+    if (needs_absolute) {
+        try writer.writeAll(uri.scheme);
+        try writer.writeAll(":");
+        if (uri.host) |host| {
+            try writer.writeAll("//");
+
+            if (uri.user) |user| {
+                try writer.writeAll(user);
+                if (uri.password) |password| {
+                    try writer.writeAll(":");
+                    try writer.writeAll(password);
+                }
+                try writer.writeAll("@");
+            }
+
+            try writer.writeAll(host);
+
+            if (uri.port) |port| {
+                try writer.writeAll(":");
+                try std.fmt.formatInt(port, 10, .lower, .{}, writer);
+            }
+        }
+    }
+
+    if (needs_path) {
+        if (uri.path.len == 0) {
+            try writer.writeAll("/");
+        } else {
+            try writer.writeAll(uri.path); // do not mess with our path
+        }
+
+        if (uri.query) |q| {
+            try writer.writeAll("?");
+            try Uri.writeEscapedQuery(writer, q);
+        }
+
+        if (needs_fragment) {
+            if (uri.fragment) |f| {
+                try writer.writeAll("#");
+                try Uri.writeEscapedQuery(writer, f);
+            }
+        }
+    }
+}

src/main.zig

@@ -90,8 +90,11 @@ pub fn main() anyerror!void {
             proxy = try proxyFromString(args.next().?); // parse stuff
             continue;
         }
-        if (std.mem.eql(u8, "-v", arg)) {
+        if (std.mem.startsWith(u8, arg, "-v")) {
+            for (arg[1..]) |c| {
+                if (c != 'v') return error.InvalidArgument;
                 verbose += 1;
+            }
             continue;
         }
         inline for (@typeInfo(Tests).Enum.fields) |f| {
@@ -181,35 +184,33 @@ pub fn main() anyerror!void {
                 std.log.info("account has functions: {}", .{call.response.functions.?.len > 0});
             },
             .rest_json_1_work_with_lambda => {
-                // const call = try client.call(services.lambda.list_functions.Request{}, options);
-                // defer call.deinit();
-                // std.log.info("list request id: {s}", .{call.response_metadata.request_id});
-                // if (call.response.functions) |fns| {
-                //     if (fns.len > 0) {
-                //         const func = fns[0];
-                //         const arn = func.function_arn.?;
-                //         // This is a bit ugly. Maybe a helper function in the library would help?
-                //         var tags = try std.ArrayList(@typeInfo(try typeForField(services.lambda.tag_resource.Request, "tags")).Pointer.child).initCapacity(allocator, 1);
-                //         defer tags.deinit();
-                //         tags.appendAssumeCapacity(.{ .key = "Foo", .value = "Bar" });
-                //         const req = services.lambda.tag_resource.Request{ .resource = arn, .tags = tags.items };
-                //         const addtag = try aws.Request(services.lambda.tag_resource).call(req, options);
-                // TODO: Something is up with signature calculation. I believe it's with the encoding, because the url used
-                // here is totally crazy with the arn of the resource directly in it
-                // Example: https://lambda.us-west-2.amazonaws.com/2017-03-31/tags/arn%253Aaws%253Alambda%253Aus-west-2%253A550620852718%253Afunction%253ADevelopmentFrontendStack--amplifyassetdeploymentha-aZqB9IbZLIKU
-                //         defer addtag.deinit();
-                //         // const addtag = try client.call(services.lambda.tag_resource.Request{ .resource = arn, .tags = &.{.{ .key = "Foo", .value = "Bar" }} }, options);
-                //         std.log.info("add tag request id: {s}", .{addtag.response_metadata.request_id});
-                //         var keys = [_][]const u8{"Foo"}; // Would love to have a way to express this without burning a var here
-                //         const deletetag = try aws.Request(services.lambda.untag_resource).call(.{ .tag_keys = keys[0..], .resource = arn }, options);
-                //         defer deletetag.deinit();
-                //         std.log.info("delete tag request id: {s}", .{deletetag.response_metadata.request_id});
-                //     } else {
-                //         std.log.err("no functions to work with", .{});
-                //     }
-                // } else {
-                //     std.log.err("no functions to work with", .{});
-                // }
+                const call = try client.call(services.lambda.list_functions.Request{}, options);
+                defer call.deinit();
+                std.log.info("list request id: {s}", .{call.response_metadata.request_id});
+                if (call.response.functions) |fns| {
+                    if (fns.len > 0) {
+                        const func = fns[0];
+                        const arn = func.function_arn.?;
+                        // This is a bit ugly. Maybe a helper function in the library would help?
+                        var tags = try std.ArrayList(@typeInfo(try typeForField(services.lambda.tag_resource.Request, "tags")).Pointer.child).initCapacity(allocator, 1);
+                        defer tags.deinit();
+                        tags.appendAssumeCapacity(.{ .key = "Foo", .value = "Bar" });
+                        const req = services.lambda.tag_resource.Request{ .resource = arn, .tags = tags.items };
+                        const addtag = try aws.Request(services.lambda.tag_resource).call(req, options);
+                        // TODO: This is failing due to double-encoding (see zig issue 17015)
+                        defer addtag.deinit();
+                        // const addtag = try client.call(services.lambda.tag_resource.Request{ .resource = arn, .tags = &.{.{ .key = "Foo", .value = "Bar" }} }, options);
+                        std.log.info("add tag request id: {s}", .{addtag.response_metadata.request_id});
+                        var keys = [_][]const u8{"Foo"}; // Would love to have a way to express this without burning a var here
+                        const deletetag = try aws.Request(services.lambda.untag_resource).call(.{ .tag_keys = keys[0..], .resource = arn }, options);
+                        defer deletetag.deinit();
+                        std.log.info("delete tag request id: {s}", .{deletetag.response_metadata.request_id});
+                    } else {
+                        std.log.err("no functions to work with", .{});
+                    }
+                } else {
+                    std.log.err("no functions to work with", .{});
+                }
             },
             .ec2_query_no_input => {
                 // Describe regions is a simpler request and easier to debug