| 70 | } |
| 71 | |
| 72 | function sendJson(res, status, body, extraHeaders = {}) { |
| 73 | const payload = JSON.stringify(body); |
| 74 | const headers = { |
| 75 | 'Content-Type': 'application/json', |
| 76 | 'Content-Length': Buffer.byteLength(payload), |
| 77 | }; |
| 78 | for (const [name, value] of Object.entries(extraHeaders || {})) { |
| 79 | if (value === undefined || value === null) continue; |
| 80 | const lower = String(name).toLowerCase(); |
| 81 | if (lower === 'content-length' || lower === 'transfer-encoding' || lower === 'connection') continue; |
| 82 | const headerValue = Array.isArray(value) ? value.join(', ') : String(value); |
| 83 | if (/[\r\n]/.test(headerValue)) continue; |
| 84 | headers[name] = headerValue; |
| 85 | } |
| 86 | res.writeHead(status, headers); |
| 87 | res.end(payload); |
| 88 | } |
| 89 | |
| 90 | function tryListen(server, port) { |
| 91 | return new Promise((resolve, reject) => { |