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Implement own protocol to handle msg size

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Signed-off-by: Francis Bouvier <francis@lightpanda.io>
This commit is contained in:
Francis Bouvier
2024-04-23 12:48:35 +02:00
parent 3396c70b67
commit 96906df64b
1 changed files with 29 additions and 9 deletions
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38
src/server.zig
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@@ -12,7 +12,8 @@ const Browser = @import("browser/browser.zig").Browser;
const cdp = @import("cdp/cdp.zig");
const NoError = error{NoError};
const Error = AcceptError || RecvError || SendError || TimeoutError || cdp.Error || NoError;
const IOError = AcceptError || RecvError || SendError || TimeoutError;
const Error = IOError || std.fmt.ParseIntError || cdp.Error || NoError;
// I/O Recv
// --------
@@ -56,16 +57,35 @@ pub const Cmd = struct {
}
// cmds
var cmd: []const u8 = undefined;
while (true) {
// parse json msg size
const size_pos = std.mem.indexOfScalar(u8, input, ':').?;
std.log.debug("msg size pos: {d}", .{size_pos});
const size_str = input[0..size_pos];
input = input[size_pos + 1 ..];
const size_msg = std.fmt.parseInt(u32, size_str, 10) catch |err| {
self.err = err;
return;
};
std.log.debug("msg size: {d}", .{size_msg});
// part
const is_part = input.len < size_msg;
std.log.debug("is_part: {any}", .{is_part});
if (is_part) {
std.log.debug("size_msg {d}, input {d}", .{ size_msg, input.len });
@panic("part msg"); // TODO: implement part
}
// handle several JSON msg in 1 read
const pos = std.mem.indexOf(u8, input, "}{");
if (pos) |p| {
cmd = input[0 .. p + 1];
input = input[p + 1 ..];
} else {
cmd = input;
const is_multi = input.len > size_msg;
std.log.debug("is_multi: {any}", .{is_multi});
const cmd = input[0..size_msg];
std.log.debug("cmd: {s}", .{cmd});
if (is_multi) {
input = input[size_msg..];
std.log.debug("rest: {s}", .{input});
}
// cdp
@@ -83,7 +103,7 @@ pub const Cmd = struct {
sendAsync(self, res) catch unreachable;
}
if (pos == null) break;
if (!is_multi) break;
// TODO: handle 1 read smaller than a complete JSON msg
}