lsongdev / lsongdev/node-escpos

ECONNREFUSED when printing by network

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主要语言
TypeScript
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描述

USB interface tested and worked.

But I'm getting this error while trying to print by Network interface:

Error: connect ECONNREFUSED 192.168.1.119:9100
    at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1487:16) {
  errno: -61,
  code: 'ECONNREFUSED',
  syscall: 'connect',
  address: '192.168.1.119',
  port: 9100
}

Ping to printer:

➜  ~ ping 192.168.1.119
PING 192.168.1.119 (192.168.1.119): 56 data bytes
64 bytes from 192.168.1.119: icmp_seq=0 ttl=64 time=6.388 ms
64 bytes from 192.168.1.119: icmp_seq=1 ttl=64 time=7.135 ms
64 bytes from 192.168.1.119: icmp_seq=2 ttl=64 time=5.781 ms
64 bytes from 192.168.1.119: icmp_seq=3 ttl=64 time=7.053 ms
^C
--- 192.168.1.119 ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 5.781/6.589/7.135/0.549 ms

Code:

const escpos = require('escpos');
escpos.Network = require('escpos-network');

const netPrint = (ip: string, text: string, encode: string, fontSize: number, port: number) => {
	const device = new escpos.Network(ip, port);

	const options = { encoding: 'GB18030' };
	const printer = new escpos.Printer(device, options);

	device.open(function (err: unknown) {
		if (err) {
			console.log(err);
			return;
		}

		printer
			.font('B')
			.align('LT')
			.style('NORMAL')
			.size(fontSize, fontSize)
			.marginBottom(1)
			.encode(encode)
			.text(text + '\n\n')
			.cut()
			.close();
	});
};

export default netPrint;

Anyone had this problem??

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  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

调研方向

Start with the supplied escpos.Network(ip, port) call and the ECONNREFUSED connection to 192.168.1.119:9100. Reproduce the network-printing path and compare it with the working USB path; done means determining whether the failure is in the library or the printer/network endpoint.

由索引模型根据 Issue 内容生成。

评估

技术栈
nodejs, typescript
领域
networking
Issue 类型
缺陷
难度
4/5
预计耗时
3-5 天
活跃度
停滞
描述清晰度
需要澄清
新手友好度
25/100

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