1 | "use strict";
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17 | Object.defineProperty(exports, "__esModule", { value: true });
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18 | exports.setup = void 0;
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19 | const net_1 = require("net");
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20 | const constants_1 = require("./constants");
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21 | const metadata_1 = require("./metadata");
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22 | const resolver_1 = require("./resolver");
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23 | const uri_parser_1 = require("./uri-parser");
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24 | const logging = require("./logging");
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25 | const TRACER_NAME = 'ip_resolver';
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26 | function trace(text) {
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27 | logging.trace(constants_1.LogVerbosity.DEBUG, TRACER_NAME, text);
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28 | }
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29 | const IPV4_SCHEME = 'ipv4';
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30 | const IPV6_SCHEME = 'ipv6';
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31 |
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32 |
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33 |
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34 | const DEFAULT_PORT = 443;
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35 | class IpResolver {
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36 | constructor(target, listener, channelOptions) {
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37 | var _a;
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38 | this.target = target;
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39 | this.listener = listener;
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40 | this.addresses = [];
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41 | this.error = null;
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42 | trace('Resolver constructed for target ' + uri_parser_1.uriToString(target));
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43 | const addresses = [];
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44 | if (!(target.scheme === IPV4_SCHEME || target.scheme === IPV6_SCHEME)) {
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45 | this.error = {
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46 | code: constants_1.Status.UNAVAILABLE,
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47 | details: `Unrecognized scheme ${target.scheme} in IP resolver`,
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48 | metadata: new metadata_1.Metadata(),
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49 | };
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50 | return;
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51 | }
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52 | const pathList = target.path.split(',');
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53 | for (const path of pathList) {
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54 | const hostPort = uri_parser_1.splitHostPort(path);
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55 | if (hostPort === null) {
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56 | this.error = {
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57 | code: constants_1.Status.UNAVAILABLE,
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58 | details: `Failed to parse ${target.scheme} address ${path}`,
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59 | metadata: new metadata_1.Metadata(),
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60 | };
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61 | return;
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62 | }
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63 | if ((target.scheme === IPV4_SCHEME && !net_1.isIPv4(hostPort.host)) ||
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64 | (target.scheme === IPV6_SCHEME && !net_1.isIPv6(hostPort.host))) {
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65 | this.error = {
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66 | code: constants_1.Status.UNAVAILABLE,
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67 | details: `Failed to parse ${target.scheme} address ${path}`,
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68 | metadata: new metadata_1.Metadata(),
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69 | };
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70 | return;
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71 | }
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72 | addresses.push({
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73 | host: hostPort.host,
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74 | port: (_a = hostPort.port) !== null && _a !== void 0 ? _a : DEFAULT_PORT,
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75 | });
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76 | }
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77 | this.addresses = addresses;
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78 | trace('Parsed ' + target.scheme + ' address list ' + this.addresses);
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79 | }
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80 | updateResolution() {
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81 | process.nextTick(() => {
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82 | if (this.error) {
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83 | this.listener.onError(this.error);
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84 | }
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85 | else {
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86 | this.listener.onSuccessfulResolution(this.addresses, null, null, null, {});
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87 | }
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88 | });
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89 | }
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90 | destroy() {
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91 |
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92 | }
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93 | static getDefaultAuthority(target) {
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94 | return target.path.split(',')[0];
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95 | }
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96 | }
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97 | function setup() {
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98 | resolver_1.registerResolver(IPV4_SCHEME, IpResolver);
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99 | resolver_1.registerResolver(IPV6_SCHEME, IpResolver);
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100 | }
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101 | exports.setup = setup;
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102 |
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