unsuccessful(unstable and dirty) proxy solution

db_schema.psql

@@ -1,18 +0,0 @@
-CREATE TABLE IF NOT EXISTS captchas (
-    id SERIAL PRIMARY KEY,
-    proxy_id INTEGER REFERENCES proxies(id),
-    hash CHAR(32),
-    solution CHAR(6)
-);
-
-CREATE TYPE IF NOT EXISTS protocol_type AS ENUM ('http', 'https');
-
-CREATE TABLE IF NOT EXISTS proxies (
-    id SERIAL PRIMARY KEY,
-    proto protocol_type,
-    claimed BOOLEAN DEFAULT FALSE,
-    host INET NOT NULL,
-    port SMALLINT NOT NULL,
-    username VARCHAR(16),
-    password VARCHAR(32)
-)

migrate.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+source .env
+DATABASE_URL=postgres://$DBUSER:$DBPASS@$DBHOST:$DBPORT npx node-pg-migrate $*

migrations/1745667860234_captchas.js

@@ -0,0 +1,23 @@
+export const shorthands = undefined;
+
+/**
+ * @param pgm {import('node-pg-migrate').MigrationBuilder}
+ * @param run {() => void | undefined}
+ * @returns {Promise<void> | void}
+ */
+export function up(pgm) {
+    pgm.createTable('captchas', {
+        id: 'id',
+        hash: {type: 'char(32)'},
+        solution: {type: 'char(6)'}
+    })
+}
+
+/**
+ * @param pgm {import('node-pg-migrate').MigrationBuilder}
+ * @param run {() => void | undefined}
+ * @returns {Promise<void> | void}
+ */
+export function down(pgm) {
+    pgm.dropTable('captchas')
+}

migrations/1745668334604_proxies.js

@@ -0,0 +1,33 @@
+export const shorthands = undefined;
+
+/**
+ * @param pgm {import('node-pg-migrate').MigrationBuilder}
+ * @param run {() => void | undefined}
+ * @returns {Promise<void> | void}
+ */
+export function up(pgm) {
+    pgm.createType('protocol_type', ['http', 'https']);
+
+    pgm.createTable('proxies', {
+        id: 'id',
+        proto: {type: 'protocol_type', notNull: true},
+        claimed: {type: 'boolean', default: false},
+        host: {type: 'inet', notNull: true},
+        port: {type: 'smallint', notNull: true},
+        username: {type: 'varchar(16)'},
+        password: {type: 'varchar(32)'}
+    });
+
+    pgm.addColumn('captchas', {proxy_id: {type: 'integer', references: 'proxies(id)'}})
+}
+
+/**
+ * @param pgm {import('node-pg-migrate').MigrationBuilder}
+ * @param run {() => void | undefined}
+ * @returns {Promise<void> | void}
+ */
+export function down(pgm) {
+    pgm.dropType('protocol_type');
+    pgm.dropTable('proxies');
+    pgm.dropColumn('captchas', 'proxy_id');
+}

package-lock.json

@@ -12,9 +12,11 @@
         "dotenv": "^16.5.0",
         "express": "^5.1.0",
         "pg": "^8.15.5",
-        "pug": "^3.0.3"
+        "pug": "^3.0.3",
+        "undici": "^7.8.0"
       },
       "devDependencies": {
+        "node-pg-migrate": "^7.9.1",
         "nodemon": "^3.1.10"
       }
     },
@@ -64,6 +66,24 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@isaacs/cliui": {
+      "version": "8.0.2",
+      "resolved": "https://registry.npmjs.org/@isaacs/cliui/-/cliui-8.0.2.tgz",
+      "integrity": "sha512-O8jcjabXaleOG9DQ0+ARXWZBTfnP4WNAqzuiJK7ll44AmxGKv/J2M4TPjxjY3znBCfvBXFzucm1twdyFybFqEA==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "string-width": "^5.1.2",
+        "string-width-cjs": "npm:string-width@^4.2.0",
+        "strip-ansi": "^7.0.1",
+        "strip-ansi-cjs": "npm:strip-ansi@^6.0.1",
+        "wrap-ansi": "^8.1.0",
+        "wrap-ansi-cjs": "npm:wrap-ansi@^7.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/accepts": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-2.0.0.tgz",
@@ -89,6 +109,32 @@
         "node": ">=0.4.0"
       }
     },
+    "node_modules/ansi-regex": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-6.1.0.tgz",
+      "integrity": "sha512-7HSX4QQb4CspciLpVFwyRe79O3xsIZDDLER21kERQ71oaPodF8jL725AgJMFAYbooIqolJoRLuM81SpeUkpkvA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-regex?sponsor=1"
+      }
+    },
+    "node_modules/ansi-styles": {
+      "version": "6.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-6.2.1.tgz",
+      "integrity": "sha512-bN798gFfQX+viw3R7yrGWRqnrN2oRkEkUjjl4JNn4E8GxxbjtG3FbrEIIY3l8/hrwUwIeCZvi4QuOTP4MErVug==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
+    },
     "node_modules/anymatch": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.3.tgz",
@@ -263,6 +309,120 @@
         "fsevents": "~2.3.2"
       }
     },
+    "node_modules/cliui": {
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-8.0.1.tgz",
+      "integrity": "sha512-BSeNnyus75C4//NQ9gQt1/csTXyo/8Sb+afLAkzAptFuMsod9HFokGNudZpi/oQV73hnVK+sR+5PVRMd+Dr7YQ==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "string-width": "^4.2.0",
+        "strip-ansi": "^6.0.1",
+        "wrap-ansi": "^7.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/cliui/node_modules/ansi-regex": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+      "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/cliui/node_modules/ansi-styles": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
+      "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "color-convert": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
+    },
+    "node_modules/cliui/node_modules/emoji-regex": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+      "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/cliui/node_modules/string-width": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "emoji-regex": "^8.0.0",
+        "is-fullwidth-code-point": "^3.0.0",
+        "strip-ansi": "^6.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/cliui/node_modules/strip-ansi": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-regex": "^5.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/cliui/node_modules/wrap-ansi": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
+      "integrity": "sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^4.0.0",
+        "string-width": "^4.1.0",
+        "strip-ansi": "^6.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/wrap-ansi?sponsor=1"
+      }
+    },
+    "node_modules/color-convert": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
+      "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "color-name": "~1.1.4"
+      },
+      "engines": {
+        "node": ">=7.0.0"
+      }
+    },
+    "node_modules/color-name": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
+      "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
@@ -319,6 +479,21 @@
         "node": ">=6.6.0"
       }
     },
+    "node_modules/cross-spawn": {
+      "version": "7.0.6",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
+      "integrity": "sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "path-key": "^3.1.0",
+        "shebang-command": "^2.0.0",
+        "which": "^2.0.1"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.0",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.0.tgz",
@@ -377,12 +552,26 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/eastasianwidth": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/eastasianwidth/-/eastasianwidth-0.2.0.tgz",
+      "integrity": "sha512-I88TYZWc9XiYHRQ4/3c5rjjfgkjhLyW2luGIheGERbNQ6OY7yTybanSpDXZa8y7VUP9YmDcYa+eyq4ca7iLqWA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
       "integrity": "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow==",
       "license": "MIT"
     },
+    "node_modules/emoji-regex": {
+      "version": "9.2.2",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-9.2.2.tgz",
+      "integrity": "sha512-L18DaJsXSUk2+42pv8mLs5jJT2hqFkFE4j21wOmgbUqsZ2hL72NsUU785g9RXgo3s0ZNgVl42TiHp3ZtOv/Vyg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/encodeurl": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-2.0.0.tgz",
@@ -422,6 +611,16 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/escalade": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.2.0.tgz",
+      "integrity": "sha512-WUj2qlxaQtO4g6Pq5c29GTcWGDyd8itL8zTlipgECz3JesAiiOKotd8JU6otB3PACgG6xkJUyVhboMS+bje/jA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/escape-html": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
@@ -509,6 +708,23 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/foreground-child": {
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/foreground-child/-/foreground-child-3.3.1.tgz",
+      "integrity": "sha512-gIXjKqtFuWEgzFRJA9WCQeSJLZDjgJUOMCMzxtvFq/37KojM1BFGufqsCy0r4qSQmYLsZYMeyRqzIWOMup03sw==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "cross-spawn": "^7.0.6",
+        "signal-exit": "^4.0.1"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/forwarded": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.2.0.tgz",
@@ -551,6 +767,16 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/get-caller-file": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-2.0.5.tgz",
+      "integrity": "sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==",
+      "dev": true,
+      "license": "ISC",
+      "engines": {
+        "node": "6.* || 8.* || >= 10.*"
+      }
+    },
     "node_modules/get-intrinsic": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/get-intrinsic/-/get-intrinsic-1.3.0.tgz",
@@ -588,6 +814,30 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/glob": {
+      "version": "11.0.2",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-11.0.2.tgz",
+      "integrity": "sha512-YT7U7Vye+t5fZ/QMkBFrTJ7ZQxInIUjwyAjVj84CYXqgBdv30MFUPGnBR6sQaVq6Is15wYJUsnzTuWaGRBhBAQ==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "foreground-child": "^3.1.0",
+        "jackspeak": "^4.0.1",
+        "minimatch": "^10.0.0",
+        "minipass": "^7.1.2",
+        "package-json-from-dist": "^1.0.0",
+        "path-scurry": "^2.0.0"
+      },
+      "bin": {
+        "glob": "dist/esm/bin.mjs"
+      },
+      "engines": {
+        "node": "20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/glob-parent": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-5.1.2.tgz",
@@ -601,6 +851,32 @@
         "node": ">= 6"
       }
     },
+    "node_modules/glob/node_modules/brace-expansion": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
+      "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^1.0.0"
+      }
+    },
+    "node_modules/glob/node_modules/minimatch": {
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.0.1.tgz",
+      "integrity": "sha512-ethXTt3SGGR+95gudmqJ1eNhRO7eGEGIgYA9vnPatK4/etz2MEVDno5GMCibdMTuBMyElzIlgxMna3K94XDIDQ==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "brace-expansion": "^2.0.1"
+      },
+      "engines": {
+        "node": "20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/gopd": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/gopd/-/gopd-1.2.0.tgz",
@@ -760,6 +1036,16 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/is-fullwidth-code-point": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
+      "integrity": "sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/is-glob": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz",
@@ -807,6 +1093,29 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/isexe": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
+      "integrity": "sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/jackspeak": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/jackspeak/-/jackspeak-4.1.0.tgz",
+      "integrity": "sha512-9DDdhb5j6cpeitCbvLO7n7J4IxnbM6hoF6O1g4HQ5TfhvvKN8ywDM7668ZhMHRqVmxqhps/F6syWK2KcPxYlkw==",
+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "@isaacs/cliui": "^8.0.2"
+      },
+      "engines": {
+        "node": "20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/js-stringify": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/js-stringify/-/js-stringify-1.0.2.tgz",
@@ -823,6 +1132,16 @@
         "promise": "^7.0.1"
       }
     },
+    "node_modules/lru-cache": {
+      "version": "11.1.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.1.0.tgz",
+      "integrity": "sha512-QIXZUBJUx+2zHUdQujWejBkcD9+cs94tLn0+YL8UrCh+D5sCXZ4c7LaEH48pNwRY3MLDgqUFyhlCyjJPf1WP0A==",
+      "dev": true,
+      "license": "ISC",
+      "engines": {
+        "node": "20 || >=22"
+      }
+    },
     "node_modules/math-intrinsics": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/math-intrinsics/-/math-intrinsics-1.1.0.tgz",
@@ -887,6 +1206,16 @@
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+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+      "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/yargs/node_modules/emoji-regex": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+      "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/yargs/node_modules/string-width": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "emoji-regex": "^8.0.0",
+        "is-fullwidth-code-point": "^3.0.0",
+        "strip-ansi": "^6.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/yargs/node_modules/strip-ansi": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-regex": "^5.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
     }
   }
 }

package.json

@@ -11,15 +11,18 @@
   "type": "module",
   "main": "src/index.js",
   "scripts": {
-    "start": "node src/index.js"
+    "start": "node src/index.js",
+    "migrate": "bash migrate.sh"
   },
   "dependencies": {
     "dotenv": "^16.5.0",
     "express": "^5.1.0",
     "pg": "^8.15.5",
-    "pug": "^3.0.3"
+    "pug": "^3.0.3",
+    "undici": "^7.8.0"
   },
   "devDependencies": {
+    "node-pg-migrate": "^7.9.1",
     "nodemon": "^3.1.10"
   }
 }

public/js/index.js

@@ -1,5 +1,9 @@
 window.onload = async () => {
     let id = (await (await fetch("/api/captcha", {method: "POST"})).json()).id
+    if (id == undefined) {
+        alert("Service is unavailable now. Please, try again later.");
+        return;
+    }
     console.log(id);
     fetch(`/api/captcha/${id}`).then(response => response.blob())
         .then(blob => {

src/controllers/captcha.js

@@ -7,11 +7,15 @@ class CaptchaController {
     async new(req, res) {
         try {
             const proxy = await ProxyService.take();
+            console.log("Using proxy: " + JSON.stringify(proxy));
+            if (proxy == undefined) {
+                return res.status(503).send({"message":"No active proxy. please, try again later"});
+            }
             const id = await CaptchaService.new(proxy);
 
             return res.status(200).send({"id": id});
         }  catch (e) {
-            console.log(e)
+            console.log(e);
             return res.status(500).send({"message": "Unknown server error"});
         }
     }
@@ -19,11 +23,12 @@ class CaptchaController {
     async get(req, res) {
         try {
             const id = req.params.id;
-        
+            if (id == undefined || parseInt(id) == NaN) {
-            const hash = await CaptchaService.get(id);
-            if (hash == undefined) {
                 return res.status(404).send({"message": "captcha not found"});
             }
+        
+            const hash = await CaptchaService.get(id);
+            
             const image = await fs.readFile(`${config.data_dir}/${hash}.jpeg`);
 
             return res.status(200).send(image)
@@ -40,12 +45,12 @@ class CaptchaController {
             if (solution == undefined || solution.length != 6) {
                 return res.status(400).send({"message": 'please, send a valid solution. Example: {"solution":"123456"}'});
             }
-            
+            let proxy = await CaptchaService.get_assigned_proxy(id);
-            if (!await CaptchaService.check_and_save_solution(id, solution))
+            if (!await CaptchaService.check_and_save_solution(id, solution, proxy))
                 return res.status(409).send({"message": "Solution is not correct"});
             
-            let proxy_id = await CaptchaService.get_assigned_proxy(id);
+            
-            await ProxyService.give_back(id);
+            await ProxyService.give_back(proxy.id);
             return res.status(200).send({"message": "Successful"});
         }  catch (e) {
             console.log(e)

src/controllers/proxy.js

@@ -3,10 +3,10 @@ import ProxyService from '../services/proxy.js';
 class CaptchaController {
     async add(req, res) {
         try {
-            const { host, port, user: username, password } = req.body;
+            const { proto, host, port, username, password } = req.body;
-            if (!host || !port) return res.status(400).send({"message":"You must specify host and port!"});
+            if (!proto || !host || !port) return res.status(400).send({"message":"You must specify proto, host and port!"});
 
-            const id = await ProxyService.add(host, port, username, password);
+            const id = await ProxyService.add(proto, host, port, username, password);
 
             return res.status(200).send({"id": id});
         }  catch (e) {

src/db.js

@@ -15,7 +15,4 @@ const pool = new Pool({
     port: config.dbport
 });
 
-pool.query(fs.readFileSync('./db_schema.psql').toString());
-
-
 export default pool;

src/services/captcha.js

@@ -8,14 +8,9 @@ import { createHash } from 'crypto';
 class CaptchaService {
     async new(proxy) {
         try {
-            let dispatcher;
+            let dispatcher = new ProxyAgent(`${proxy.proto}://${proxy.username? proxy.username + "@" + proxy.password + ":" : ""}${proxy.host}:${proxy.port}`);
-            if (proxy.username) {
-                dispatcher = new ProxyAgent(`${proxy.proto}://${proxy.username}:${proxy.password}@${proxy.host}:${proxy.port}`)
-            } else {
-                dispatcher = new ProxyAgent(`${proxy.proto}://${proxy.host}:${proxy.port}`)
-            }
             
-            const captcha = await (await fetch(config.captcha_source_url, dispatcher)).blob();
+            const captcha = await (await fetch(config.captcha_source_url, {dispatcher})).blob();
             const buffer = Buffer.from(await captcha.arrayBuffer());
             const hash = createHash('md5').update(buffer).digest('hex');
             await fs.writeFile(`${config.data_dir}/${hash}.jpeg`, buffer);
@@ -28,7 +23,8 @@ class CaptchaService {
         }
     }
 
-    async check_solution(solution) {
+    async check_solution(solution, proxy) {
+        let dispatcher = new ProxyAgent(`${proxy.proto}://${proxy.username? proxy.username + "@" + proxy.password + ":" : ""}${proxy.host}:${proxy.port}`);
         const body = {
             "TotalSum": "78278",
             "FnNumber": "9960440301173139",
@@ -42,6 +38,7 @@ class CaptchaService {
             "headers": {
                 "Content-Type": "application/json;charset=utf-8"
             },
+            dispatcher,
             "body": JSON.stringify(body),
             "method": "POST",
         });
@@ -51,13 +48,13 @@ class CaptchaService {
     async get (id) {
         let result = await db.query("SELECT hash FROM captchas WHERE id = $1", [id]) 
         if (result.rows[0] == undefined) {
-            return undefined
+            return undefined;
         }
         return result.rows[0].hash;
     }
 
-    async check_and_save_solution (id, solution) {
+    async check_and_save_solution (id, solution, proxy) {
-        if (!await this.check_solution(solution)) {
+        if (!await this.check_solution(solution, proxy)) {
             return false;
         }
 
@@ -66,7 +63,7 @@ class CaptchaService {
     }
 
     async get_assigned_proxy(id) {
-        return (await db.query("SELECT proxy_id FROM captchas WHERE id = $1", [id])).rows[0].proxy_id;
+        return (await db.query("select proxies.id, proto, host, port, username, password from proxies JOIN captchas on proxy_id = proxies.id WHERE captchas.id = $1", [id])).rows[0];
     }
 }
 

src/services/proxy.js

@@ -1,4 +1,5 @@
 import db from '../db.js';
+import { ProxyAgent } from 'undici';
 
 class ProxyService {
     async add(proto, host, port, username, password) {
@@ -6,17 +7,35 @@ class ProxyService {
     }
 
     async take() {
-        let proxy = (await db.query("UPDATE proxies SET claimed = TRUE WHERE id = ( SELECT id FROM proxies WHERE claimed = FALSE ORDER BY id LIMIT 1 ) RETURNING proto, host, port, username, password")).rows[0]
+        // while (true) {
-        if (proxy == undefined) return undefined;
+            let proxy = (await db.query("UPDATE proxies SET claimed = TRUE WHERE id = ( SELECT id FROM proxies WHERE claimed = FALSE ORDER BY id LIMIT 1 ) RETURNING id, proto, host, port, username, password")).rows[0]
-        return proxy;
+            return proxy == undefined? undefined : proxy;
+            
+            // console.log("testing proxy")
+            // if (await this.check_connection(proxy)) return proxy;
+            // else await this.delete(proxy.id)
+            // console.log("Proxy failed and deleted")
+        // }
     }
 
+    // async check_connection(proxy) {
+    //     const dispatcher = new ProxyAgent(`${proxy.proto}://${proxy.username? proxy.username + "@" + proxy.password + ":" : ""}${proxy.host}:${proxy.port}`);
+    //     let response;
+    //     try {
+    //         response = await fetch("https://google.com", {dispatcher})
+    //     } catch (e) {
+    //         console.log(`Error on testing the proxy`)
+    //         return false
+    //     }
+    //     return response.status == 200;
+    // }
+
     async give_back(id) {
         await db.query("UPDATE proxies SET claimed = false WHERE id = $1", [id]);
     }
 
     async delete(id) {
-        await db.query("DELETE FRM proxies WHERE id = $1", [id]);
+        await db.query("DELETE FROM proxies WHERE id = $1", [id]);
     }
 }