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fix(server): add error logging to MCP message processing #191

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Merged
gHashTag merged 1 commit into from
Mar 11, 2026
Merged

fix(server): add error logging to MCP message processing #191

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10 changes: 7 additions & 3 deletions tools/mcp/trinity_mcp/server.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -1162,7 +1162,7 @@ pub fn main() !void {

var server = TrinityMCPServer.init(allocator);

// Debug to stderr
// Debug to stderr (best-effort: stderr may not be available)
const stderr_fd: posix.fd_t = 2;
_ = posix.write(stderr_fd, "TRINITY MCP Server v2.0.0 started\n") catch {};
_ = posix.write(stderr_fd, "38+ tools + resources + prompts | Content-Length framing\n\n") catch {};
Expand Down Expand Up @@ -1195,7 +1195,9 @@ pub fn main() !void {
if (nl) |newline_pos| {
const line = stdin_buf[0..newline_pos];
if (line.len > 0 and line[0] == '{') {
processMessage(&server, line, &stdout_writer, allocator) catch {};
processMessage(&server, line, &stdout_writer, allocator) catch |err| {
std.log.err("MCP message processing failed: {s}", .{@errorName(err)});
};
}
// Shift buffer
const remaining = stdin_filled - (newline_pos + 1);
Expand Down Expand Up @@ -1241,7 +1243,9 @@ pub fn main() !void {
if (stdin_filled < total_msg_len) break; // Need more data

const body = stdin_buf[body_start .. body_start + cl];
processMessage(&server, body, &stdout_writer, allocator) catch {};
processMessage(&server, body, &stdout_writer, allocator) catch |err| {
std.log.err("MCP message processing failed: {s}", .{@errorName(err)});
};

// Shift buffer
const remaining = stdin_filled - total_msg_len;
Expand Down
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