Start work on new http pkg

src/http/lib.zig

@@ -0,0 +1,20 @@
+const std = @import("std");
+const ciutf8 = @import("util").ciutf8;
+
+pub const Status = std.http.Status;
+pub const Method = std.http.Method;
+pub const ResponseStream = @import("./response_stream.zig").ResponseStream;
+
+pub const Headers = std.HashMap([]const u8, []const u8, struct {
+    pub fn eql(_: @This(), a: []const u8, b: []const u8) bool {
+        return ciutf8.eql(a, b);
+    }
+
+    pub fn hash(_: @This(), str: []const u8) u64 {
+        return ciutf8.hash(str);
+    }
+}, std.hash_map.default_max_load_percentage);
+
+test {
+    _ = ResponseStream;
+}

src/http/response_stream.zig

@@ -0,0 +1,376 @@
+const std = @import("std");
+const http = @import("./lib.zig");
+
+const Status = http.Status;
+const Headers = http.Headers;
+
+const chunk_size = 16 * 1024;
+pub fn openResponse(
+    alloc: std.mem.Allocator,
+    writer: anytype,
+    headers: *const Headers,
+    status: Status,
+) !ResponseStream(@TypeOf(writer)) {
+    const buf = try alloc.alloc(u8, chunk_size);
+    errdefer alloc.free(buf);
+
+    try writeStatusLine(writer, status);
+    try writeHeaders(writer, headers);
+
+    return ResponseStream(@TypeOf(writer)){
+        .allocator = alloc,
+        .base_writer = writer,
+        .headers = headers,
+        .buffer = buf,
+    };
+}
+
+fn writeStatusLine(writer: anytype, status: Status) !void {
+    const status_text = status.phrase() orelse "";
+    try writer.print("HTTP/1.1 {} {s}\r\n", .{ @enumToInt(status), status_text });
+}
+
+fn writeHeaders(writer: anytype, headers: *const Headers) !void {
+    var iter = headers.iterator();
+    while (iter.next()) |header| {
+        for (header.value_ptr.*) |ch| {
+            if (ch == '\r' or ch == '\n') @panic("newlines not yet supported in headers");
+        }
+
+        try writer.print("{s}: {s}\r\n", .{ header.key_ptr.*, header.value_ptr.* });
+    }
+}
+
+fn writeChunk(writer: anytype, contents: []const u8) @TypeOf(writer).Error!void {
+    try writer.print("{x}\r\n", .{contents.len});
+    try writer.writeAll(contents);
+    try writer.writeAll("\r\n");
+}
+
+fn writeLastChunk(writer: anytype) writer.Error!void {
+    try writer.writeAll("0\r\n");
+}
+
+pub fn ResponseStream(comptime BaseWriter: type) type {
+    return struct {
+        const Self = @This();
+        const Error = BaseWriter.Error;
+        const Writer = std.io.Writer(*Self, Error, write);
+
+        allocator: std.mem.Allocator,
+        base_writer: BaseWriter,
+        headers: *const Headers,
+        buffer: []u8,
+        buffer_pos: usize = 0,
+        chunked: bool = false,
+
+        fn writeToBuffer(self: *Self, bytes: []const u8) void {
+            std.mem.copy(u8, self.buffer[self.buffer_pos..], bytes);
+            self.buffer_pos += bytes.len;
+        }
+
+        fn startChunking(self: *Self) Error!void {
+            try self.base_writer.writeAll("Transfer-Encoding: chunked\r\n\r\n");
+            self.chunked = true;
+        }
+
+        fn flushChunk(self: *Self) Error!void {
+            try writeChunk(self.base_writer, self.buffer[0..self.buffer_pos]);
+            self.buffer_pos = 0;
+        }
+
+        fn writeToChunks(self: *Self, bytes: []const u8) Error!void {
+            var cursor: usize = 0;
+            while (true) {
+                const remaining_in_chunk = self.buffer.len - self.buffer_pos;
+                const remaining_to_write = bytes.len - cursor;
+                if (remaining_to_write <= remaining_in_chunk) {
+                    self.writeToBuffer(bytes[cursor..]);
+                    return;
+                }
+
+                std.debug.print("{}\n", .{cursor});
+                self.writeToBuffer(bytes[cursor .. cursor + remaining_in_chunk]);
+                cursor += remaining_in_chunk;
+                try self.flushChunk();
+            }
+        }
+
+        fn write(self: *Self, bytes: []const u8) Error!usize {
+            if (!self.chunked and bytes.len > self.buffer.len - self.buffer_pos) {
+                try self.startChunking();
+            }
+
+            if (self.chunked) {
+                try self.writeToChunks(bytes);
+            } else {
+                self.writeToBuffer(bytes);
+            }
+
+            return bytes.len;
+        }
+
+        fn flushBodyUnchunked(self: *Self) Error!void {
+            if (self.buffer_pos != 0) {
+                try self.base_writer.print("Content-Length: {}\r\n", .{self.buffer_pos});
+            }
+
+            try self.base_writer.writeAll("\r\n");
+
+            if (self.buffer_pos != 0) {
+                try self.base_writer.writeAll(self.buffer[0..self.buffer_pos]);
+            }
+            self.buffer_pos = 0;
+        }
+
+        pub fn writer(self: *Self) Writer {
+            return Writer{ .context = self };
+        }
+
+        pub fn finish(self: *Self) Error!void {
+            if (!self.chunked) {
+                try self.flushBodyUnchunked();
+            } else {
+                if (self.buffer_pos != 0) {
+                    try self.flushChunk();
+                }
+                try self.base_writer.writeAll("0\r\n");
+            }
+        }
+
+        pub fn close(self: *const Self) void {
+            self.allocator.free(self.buffer);
+        }
+    };
+}
+
+test {
+    _ = _tests;
+}
+const _tests = struct {
+    fn toCrlf(comptime str: []const u8) []const u8 {
+        comptime {
+            var buf: [str.len * 2]u8 = undefined;
+            @setEvalBranchQuota(@as(u32, str.len * 2));
+
+            var len: usize = 0;
+            for (str) |ch| {
+                if (ch == '\n') {
+                    buf[len] = '\r';
+                    len += 1;
+                }
+
+                buf[len] = ch;
+                len += 1;
+            }
+
+            return buf[0..len];
+        }
+    }
+
+    const test_buffer_size = chunk_size * 4;
+    test "ResponseStream no headers empty body" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = Headers.init(std.testing.allocator);
+        defer headers.deinit();
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .ok,
+            );
+            defer stream.close();
+
+            try stream.finish();
+        }
+
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 200 OK
+                \\
+                \\
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+    }
+
+    test "ResponseStream empty body" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = Headers.init(std.testing.allocator);
+        defer headers.deinit();
+
+        try headers.put("Content-Type", "text/plain");
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .ok,
+            );
+            defer stream.close();
+
+            try stream.finish();
+        }
+
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 200 OK
+                \\Content-Type: text/plain
+                \\
+                \\
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+    }
+
+    test "ResponseStream not 200 OK" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = Headers.init(std.testing.allocator);
+        defer headers.deinit();
+
+        try headers.put("Content-Type", "text/plain");
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .not_found,
+            );
+            defer stream.close();
+
+            try stream.finish();
+        }
+
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 404 Not Found
+                \\Content-Type: text/plain
+                \\
+                \\
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+    }
+    test "ResponseStream small body" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = Headers.init(std.testing.allocator);
+        defer headers.deinit();
+
+        try headers.put("Content-Type", "text/plain");
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .ok,
+            );
+            defer stream.close();
+
+            try stream.writer().writeAll("Index Page");
+
+            try stream.finish();
+        }
+
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 200 OK
+                \\Content-Type: text/plain
+                \\Content-Length: 10
+                \\
+                \\Index Page
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+    }
+
+    test "ResponseStream large body" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = Headers.init(std.testing.allocator);
+        defer headers.deinit();
+
+        try headers.put("Content-Type", "text/plain");
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .ok,
+            );
+            defer stream.close();
+
+            try stream.writer().writeAll("quuz" ** 6000);
+
+            try stream.finish();
+        }
+
+        // zig fmt: off
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 200 OK
+                \\Content-Type: text/plain
+                \\Transfer-Encoding: chunked
+                \\
+                \\
+                ++ "4000\n"
+                ++ "quuz" ** 4096 ++ "\n"
+                ++ "1dc0\n"
+                ++ "quuz" ** (1904) ++ "\n"
+                ++ "0\n"
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+        // zig fmt: on
+    }
+
+    test "ResponseStream large body ending on chunk boundary" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = Headers.init(std.testing.allocator);
+        defer headers.deinit();
+
+        try headers.put("Content-Type", "text/plain");
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .ok,
+            );
+            defer stream.close();
+
+            try stream.writer().writeAll("quuz" ** (chunk_size / 2));
+
+            try stream.finish();
+        }
+
+        // zig fmt: off
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 200 OK
+                \\Content-Type: text/plain
+                \\Transfer-Encoding: chunked
+                \\
+                \\
+                ++ "4000\n"
+                ++ "quuz" ** 4096 ++ "\n"
+                ++ "4000\n"
+                ++ "quuz" ** 4096 ++ "\n"
+                ++ "0\n"
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+        // zig fmt: on
+    }
+};

src/main/http.zig

@@ -3,10 +3,11 @@ const root = @import("root");
 
 const ciutf8 = @import("./util.zig").ciutf8;
 const Reader = std.net.Stream.Reader;
-const Writer = std.net.Stream.Writer;
+//const Writer = std.net.Stream.Writer;
 
 const Status = std.http.Status;
 const Method = std.http.Method;
+const Connection = std.net.StreamServer.Connection;
 pub const Handler = fn (*Context) anyerror!Response;
 
 const HeaderMap = std.HashMap([]const u8, []const u8, struct {
@@ -18,18 +19,19 @@ const HeaderMap = std.HashMap([]const u8, []const u8, struct {
         return ciutf8.hash(str);
     }
 }, std.hash_map.default_max_load_percentage);
+pub const Headers = HeaderMap;
 
-fn handleBadRequest(writer: Writer) !void {
+fn handleBadRequest(writer: std.net.Stream.Writer) !void {
     std.log.info("400 Bad Request", .{});
     try writer.writeAll("HTTP/1.1 400 Bad Request");
 }
 
-fn handleNotImplemented(writer: Writer) !void {
+fn handleNotImplemented(writer: std.net.Stream.Writer) !void {
     std.log.info("501", .{});
     try writer.writeAll("HTTP/1.1 501 Not Implemented");
 }
 
-fn handleInternalError(writer: Writer) !void {
+fn handleInternalError(writer: std.net.Stream.Writer) !void {
     std.log.info("500", .{});
     try writer.writeAll("HTTP/1.1 500 Internal Server Error");
 }
@@ -117,27 +119,25 @@ fn parseHeaders(allocator: std.mem.Allocator, reader: Reader) !HeaderMap {
     return map;
 }
 
-pub fn handleConnection(conn: std.net.StreamServer.Connection, handler: Handler) void {
+const ConnectionId = u64;
+var next_connection_id = std.atomic.Atomic(ConnectionId).init(1);
+pub fn handleConnection(
+    base_alloc: std.mem.Allocator,
+    conn: std.net.StreamServer.Connection,
+    handler: Handler,
+) void {
+    const conn_id = next_connection_id.fetchAdd(1, .SeqCst);
     defer conn.stream.close();
-    const reader = conn.stream.reader();
-    const writer = conn.stream.writer();
+    std.log.debug("New connection conn={}", .{conn_id});
 
-    handleRequest(reader, writer, handler) catch |err| std.log.err("unhandled error processing connection: {}", .{err});
+    _ = base_alloc;
+    handleRequest(conn.stream.reader(), conn.stream.writer(), handler) catch |err| std.log.err("conn={}; Unhandled error processing connection {}. Closing", .{ conn_id, err });
+    std.log.debug("Terminating connection conn={}", .{conn_id});
 }
 
-fn handleRequest(reader: Reader, writer: Writer, handler: Handler) !void {
-    handleHttpRequest(reader, writer, handler) catch |err| switch (err) {
-        error.BadRequest, error.UnknownProtocol => try handleBadRequest(writer),
-        error.MethodNotImplemented, error.HttpVersionNotSupported => try handleNotImplemented(writer),
-        else => {
-            std.log.err("unknown error handling request: {}", .{err});
-            try handleInternalError(writer);
-        },
-    };
-}
-
-fn handleHttpRequest(reader: Reader, writer: Writer, handler: Handler) anyerror!void {
+fn handleRequest(reader: Reader, writer: std.net.Stream.Writer, handler: Handler) anyerror!void {
     const method = try parseHttpMethod(reader);
+    std.log.debug("Request recieved", .{});
 
     var header_buf: [1 << 16]u8 = undefined;
     var fba = std.heap.FixedBufferAllocator.init(&header_buf);
@@ -186,80 +186,393 @@ fn handleHttpRequest(reader: Reader, writer: Writer, handler: Handler) anyerror!
 
     _ = ctx;
 
-    //try handler(&ctx);
+    const response = try handler(&ctx);
+    const status_text = response.status.phrase() orelse "";
+    try writer.print("HTTP/1.1 {} {s}\r\n", .{ @enumToInt(response.status), status_text });
+
+    var iter = response.headers.iterator();
+    while (iter.next()) |it| {
+        try writer.print("{s}: {s}\r\n", .{ it.key_ptr.*, it.value_ptr.* });
+    } else try writer.writeAll("\r\n");
+
+    if (response.body) |body| {
+        try writer.writeAll(body);
+    }
     _ = handler;
     _ = writer;
     _ = path;
 }
 
-pub const Context = struct {
-    request: Request2,
-    allocator: std.mem.Allocator,
-};
+pub const Context = struct {};
 
-pub const Response = struct {
+const chunk_size = 16 * 1024;
+pub fn openResponse(
+    alloc: std.mem.Allocator,
+    writer: anytype,
+    headers: *const HeaderMap,
     status: Status,
-    headers: HeaderMap,
-    body: ?[]const u8 = null,
-};
+) !ResponseStream(@TypeOf(writer)) {
+    const buf = try alloc.alloc(u8, chunk_size);
+    errdefer alloc.free(buf);
 
-pub const Request2 = struct {
-    method: Method,
-    path: []const u8,
-    headers: HeaderMap,
-    body: ?[]const u8 = null,
-};
+    try writeStatusLine(writer, status);
+    try writeHeaders(writer, headers);
 
-const ResponseOld = struct {
-    headers: HeaderMap,
-    writer: Writer,
+    return ResponseStream(@TypeOf(writer)){
+        .allocator = alloc,
+        .base_writer = writer,
+        .headers = headers,
+        .buffer = buf,
+    };
+}
 
-    fn writeHeaders(self: *Response) !void {
-        var iter = self.headers.iterator();
-        var it = iter.next();
-        while (it != null) : (it = iter.next()) {
-            try self.writer.print("{s}: {s}\r\n", .{ it.?.key_ptr.*, it.?.value_ptr.* });
+fn writeStatusLine(writer: anytype, status: Status) !void {
+    const status_text = status.phrase() orelse "";
+    try writer.print("HTTP/1.1 {} {s}\r\n", .{ @enumToInt(status), status_text });
+}
+
+fn writeHeaders(writer: anytype, headers: *const HeaderMap) !void {
+    var iter = headers.iterator();
+    while (iter.next()) |header| {
+        for (header.value_ptr.*) |ch| {
+            if (ch == '\r' or ch == '\n') @panic("newlines not yet supported in headers");
         }
+
+        try writer.print("{s}: {s}\r\n", .{ header.key_ptr.*, header.value_ptr.* });
     }
+}
 
-    fn statusText(status: u16) []const u8 {
-        return switch (status) {
-            200 => "OK",
-            204 => "No Content",
-            404 => "Not Found",
-            else => "",
-        };
-    }
+fn writeChunk(writer: anytype, contents: []const u8) @TypeOf(writer).Error!void {
+    try writer.print("{x}\r\n", .{contents.len});
+    try writer.writeAll(contents);
+    try writer.writeAll("\r\n");
+}
 
-    fn openInternal(self: *Response, status: u16) !void {
-        try self.writer.print("HTTP/1.1 {} {s}\r\n", .{ status, statusText(status) });
-        try self.writeHeaders();
-        try self.writer.writeAll("Connection: close\r\n"); // TODO
-    }
+fn writeLastChunk(writer: anytype) writer.Error!void {
+    try writer.writeAll("0\r\n");
+}
 
-    pub fn open(self: *Response, status: u16) !Writer {
-        try self.openInternal(status);
-        try self.writer.writeAll("\r\n");
+fn ResponseStream(comptime BaseWriter: type) type {
+    return struct {
+        const Self = @This();
+        const Error = BaseWriter.Error;
+        const Writer = std.io.Writer(*Self, Error, write);
 
-        return self.writer;
-    }
+        allocator: std.mem.Allocator,
+        base_writer: BaseWriter,
+        headers: *const HeaderMap,
+        buffer: []u8,
+        buffer_pos: usize = 0,
+        chunked: bool = false,
 
-    pub fn write(self: *Response, status: u16, body: []const u8) !void {
-        try self.openInternal(status);
-        if (body.len != 0) {
-            try self.writer.print("Content-Length: {}\r\n", .{body.len});
-            if (self.headers.get("Content-Type") == null) {
-                try self.writer.writeAll("Content-Type: application/octet-stream\r\n");
+        fn writeToBuffer(self: *Self, bytes: []const u8) void {
+            std.mem.copy(u8, self.buffer[self.buffer_pos..], bytes);
+            self.buffer_pos += bytes.len;
+        }
+
+        fn startChunking(self: *Self) Error!void {
+            try self.base_writer.writeAll("Transfer-Encoding: chunked\r\n\r\n");
+            self.chunked = true;
+        }
+
+        fn flushChunk(self: *Self) Error!void {
+            try writeChunk(self.base_writer, self.buffer[0..self.buffer_pos]);
+            self.buffer_pos = 0;
+        }
+
+        fn writeToChunks(self: *Self, bytes: []const u8) Error!void {
+            var cursor: usize = 0;
+            while (true) {
+                const remaining_in_chunk = self.buffer.len - self.buffer_pos;
+                const remaining_to_write = bytes.len - cursor;
+                if (remaining_to_write <= remaining_in_chunk) {
+                    self.writeToBuffer(bytes[cursor..]);
+                    return;
+                }
+
+                std.debug.print("{}\n", .{cursor});
+                self.writeToBuffer(bytes[cursor .. cursor + remaining_in_chunk]);
+                cursor += remaining_in_chunk;
+                try self.flushChunk();
             }
         }
 
-        try self.writer.writeAll("\r\n");
-        if (body.len != 0) {
-            try self.writer.writeAll(body);
+        fn write(self: *Self, bytes: []const u8) Error!usize {
+            if (!self.chunked and bytes.len > self.buffer.len - self.buffer_pos) {
+                try self.startChunking();
+            }
+
+            if (self.chunked) {
+                try self.writeToChunks(bytes);
+            } else {
+                self.writeToBuffer(bytes);
+            }
+
+            return bytes.len;
+        }
+
+        fn flushBodyUnchunked(self: *Self) Error!void {
+            if (self.buffer_pos != 0) {
+                try self.base_writer.print("Content-Length: {}\r\n", .{self.buffer_pos});
+            }
+
+            try self.base_writer.writeAll("\r\n");
+
+            if (self.buffer_pos != 0) {
+                try self.base_writer.writeAll(self.buffer[0..self.buffer_pos]);
+            }
+            self.buffer_pos = 0;
+        }
+
+        pub fn writer(self: *Self) Writer {
+            return Writer{ .context = self };
+        }
+
+        pub fn finish(self: *Self) Error!void {
+            if (!self.chunked) {
+                try self.flushBodyUnchunked();
+            } else {
+                if (self.buffer_pos != 0) {
+                    try self.flushChunk();
+                }
+                try self.base_writer.writeAll("0\r\n");
+            }
+        }
+
+        pub fn close(self: *const Self) void {
+            self.allocator.free(self.buffer);
+        }
+    };
+}
+
+test {
+    _ = _tests;
+}
+const _tests = struct {
+    fn toCrlf(comptime str: []const u8) []const u8 {
+        comptime {
+            var buf: [str.len * 2]u8 = undefined;
+            @setEvalBranchQuota(@as(u32, str.len * 2));
+
+            var len: usize = 0;
+            for (str) |ch| {
+                if (ch == '\n') {
+                    buf[len] = '\r';
+                    len += 1;
+                }
+
+                buf[len] = ch;
+                len += 1;
+            }
+
+            return buf[0..len];
         }
     }
 
-    pub fn statusOnly(self: *Response, status: u16) !void {
-        try self.openInternal(status);
+    const test_buffer_size = chunk_size * 4;
+    test "ResponseStream no headers empty body" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = HeaderMap.init(std.testing.allocator);
+        defer headers.deinit();
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .ok,
+            );
+            defer stream.close();
+
+            try stream.finish();
+        }
+
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 200 OK
+                \\
+                \\
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+    }
+
+    test "ResponseStream empty body" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = HeaderMap.init(std.testing.allocator);
+        defer headers.deinit();
+
+        try headers.put("Content-Type", "text/plain");
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .ok,
+            );
+            defer stream.close();
+
+            try stream.finish();
+        }
+
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 200 OK
+                \\Content-Type: text/plain
+                \\
+                \\
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+    }
+
+    test "ResponseStream not 200 OK" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = HeaderMap.init(std.testing.allocator);
+        defer headers.deinit();
+
+        try headers.put("Content-Type", "text/plain");
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .not_found,
+            );
+            defer stream.close();
+
+            try stream.finish();
+        }
+
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 404 Not Found
+                \\Content-Type: text/plain
+                \\
+                \\
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+    }
+    test "ResponseStream small body" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = HeaderMap.init(std.testing.allocator);
+        defer headers.deinit();
+
+        try headers.put("Content-Type", "text/plain");
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .ok,
+            );
+            defer stream.close();
+
+            try stream.writer().writeAll("Index Page");
+
+            try stream.finish();
+        }
+
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 200 OK
+                \\Content-Type: text/plain
+                \\Content-Length: 10
+                \\
+                \\Index Page
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+    }
+
+    test "ResponseStream large body" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = HeaderMap.init(std.testing.allocator);
+        defer headers.deinit();
+
+        try headers.put("Content-Type", "text/plain");
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .ok,
+            );
+            defer stream.close();
+
+            try stream.writer().writeAll("quuz" ** 6000);
+
+            try stream.finish();
+        }
+
+        // zig fmt: off
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 200 OK
+                \\Content-Type: text/plain
+                \\Transfer-Encoding: chunked
+                \\
+                \\
+                ++ "4000\n"
+                ++ "quuz" ** 4096 ++ "\n"
+                ++ "1dc0\n"
+                ++ "quuz" ** (1904) ++ "\n"
+                ++ "0\n"
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+        // zig fmt: on
+    }
+
+    test "ResponseStream large body ending on chunk boundary" {
+        var buffer: [test_buffer_size]u8 = undefined;
+        var test_stream = std.io.fixedBufferStream(&buffer);
+        var headers = HeaderMap.init(std.testing.allocator);
+        defer headers.deinit();
+
+        try headers.put("Content-Type", "text/plain");
+
+        {
+            var stream = try openResponse(
+                std.testing.allocator,
+                test_stream.writer(),
+                &headers,
+                .ok,
+            );
+            defer stream.close();
+
+            try stream.writer().writeAll("quuz" ** (chunk_size / 2));
+
+            try stream.finish();
+        }
+
+        // zig fmt: off
+        try std.testing.expectEqualStrings(
+            toCrlf(
+                \\HTTP/1.1 200 OK
+                \\Content-Type: text/plain
+                \\Transfer-Encoding: chunked
+                \\
+                \\
+                ++ "4000\n"
+                ++ "quuz" ** 4096 ++ "\n"
+                ++ "4000\n"
+                ++ "quuz" ** 4096 ++ "\n"
+                ++ "0\n"
+            ),
+            buffer[0..(try test_stream.getPos())],
+        );
+        // zig fmt: on
     }
 };
+

src/main/main.zig

@@ -8,65 +8,13 @@ pub const routing = @import("./routing.zig");
 pub const Uuid = util.Uuid;
 pub const ciutf8 = util.ciutf8;
 
-//pub const io_mode = .evented;
+fn testHandler(ctx: *const http.Context) !void {
+    const stream = try ctx.response.open(.ok);
+    defer stream.close();
 
-pub const router = routing.makeRouter(*http.Context, &[_]routing.RouteFn(*http.Context){
-    //routing.makeRoute(.GET, "/", staticString("Index Page")),
-    //routing.makeRoute(.GET, "/abc", staticString("abc")),
-    //routing.makeRoute(.GET, "/user/:id", getUser),
-    //routing.makeRoute(.POST, "/note/", postNote),
-});
-
-const this_scheme = "http";
-const this_host = "localhost:8080";
-
-fn postNote(ctx: *http.Context, _: struct {}) anyerror!void {
-    const id = try db.createNote(.{
-        .author = Uuid.randV4(util.getRandom()),
-        .content = "test post",
-    });
-
-    var writer = try ctx.response.open(200);
-    try writer.writeAll("{\"id\":\"");
-    try writer.print("{}", .{id});
-    try writer.writeAll("\"}");
+    try stream.writer().writeAll("Index page");
 }
 
-fn getUser(ctx: *http.Context, args: struct { id: []const u8 }) anyerror!void {
-    const host = ctx.request.headers.get("host") orelse {
-        return;
-    };
-
-    const uuid = Uuid.parse(args.id) catch {
-        try ctx.response.statusOnly(400);
-        return;
-    };
-
-    const actor = try db.getActorById(args.id);
-
-    if (actor == null or !std.mem.eql(u8, actor.?.host, host)) {
-        try ctx.response.statusOnly(404);
-        return;
-    }
-
-    try ctx.response.headers.put("Content-Type", "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"");
-
-    var writer = try ctx.response.open(200);
-    try writer.writeAll("{\"type\":\"Person\",");
-    try writer.print("\"id\":\"{s}://{s}/user/{}\",", .{ this_scheme, this_host, uuid });
-    try writer.print("\"preferredUsername\":\"{s}\"", .{actor.?.handle});
-    try writer.writeAll("}");
-}
-
-const DummyArgs = struct {};
-fn staticString(comptime str: []const u8) fn (*http.Context, DummyArgs) anyerror!void {
-    return (struct {
-        fn func(ctx: *http.Context, _: DummyArgs) anyerror!void {
-            try ctx.response.headers.put("Content-Type", "text/plain");
-            try ctx.response.write(200, str);
-        }
-    }).func;
-}
 pub fn main() anyerror!void {
     var srv = std.net.StreamServer.init(.{ .reuse_address = true });
     defer srv.deinit();
@@ -80,10 +28,9 @@ pub fn main() anyerror!void {
         const conn = try srv.accept();
 
         // todo: keep track of connections
-        _ = async http.handleConnection(conn, struct {
-            fn func(ctx: *http.Context) anyerror!http.Response {
-                return try router(ctx.request.method, ctx.request.path, ctx);
-                //_ = ctx;
+        _ = async http.handleConnection(std.heap.page_allocator, conn, struct {
+            fn func(ctx: *const http.Context) !void {
+                return testHandler(ctx);
             }
         }.func);
     }