A fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet.
This report summarizes scanner evidence for fatedier/frp, a Go project with 110,352 GitHub stars. SynthScan examined 90,102 lines of code across 521 source files, recording 329 pattern matches distributed across 4 syntactic categories. The legacy adjusted pattern signal is 3.7 (Low pattern signal); it is not an authorship estimate.
Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.
Use each vector to guide manual verification of the underlying findings.
Payload schema: 1.0.0 · Engine: 2.0.0 · Scoring: heuristic-density-v1 · Scan date: 2026-10-31.
Can maintainers explain intent, assumptions, and trade-offs? 322 finding(s).
Are imports declared and package/API names verified? 7 finding(s).
Are wrappers, guards, and repeated structures necessary? 0 finding(s).
Which changes need focused human review? 329 finding(s).
This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.
Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.
This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.
The scanner identified 329 distinct pattern matches across 4 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.
Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | cmd/frpc/main.go | 1 | // Copyright 2016 fatedier, fatedier@gmail.com | COMMENT |
| LOW | cmd/frpc/sub/proxy.go | 1 | // Copyright 2023 The frp Authors | COMMENT |
| LOW | cmd/frpc/sub/admin.go | 1 | // Copyright 2023 The frp Authors | COMMENT |
| LOW | cmd/frpc/sub/verify_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | cmd/frpc/sub/nathole.go | 1 | // Copyright 2023 The frp Authors | COMMENT |
| LOW | cmd/frpc/sub/root.go | 1 | // Copyright 2018 fatedier, fatedier@gmail.com | COMMENT |
| LOW | cmd/frpc/sub/verify.go | 1 | // Copyright 2021 The frp Authors | COMMENT |
| LOW | cmd/frps/main.go | 1 | // Copyright 2018 fatedier, fatedier@gmail.com | COMMENT |
| LOW | cmd/frps/root.go | 1 | // Copyright 2018 fatedier, fatedier@gmail.com | COMMENT |
| LOW | cmd/frps/verify.go | 1 | // Copyright 2021 The frp Authors | COMMENT |
| LOW | test/e2e/e2e.go | 41 | log.Infof("starting e2e run %q on Ginkgo node %d of total %d", | COMMENT |
| LOW | test/e2e/e2e.go | 61 | // such as making some global variables accessible to all parallel executions | COMMENT |
| LOW | test/e2e/v1/features/control_replacement.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | test/e2e/v1/basic/oidc.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | test/e2e/v1/basic/token_source.go | 1 | // Copyright 2025 The frp Authors | COMMENT |
| LOW | test/e2e/mock/server/oidcserver/oidcserver.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | test/e2e/pkg/relay/halfopen.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/service.go | 1 | // Copyright 2017 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/control_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/service_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/control.go | 1 | // Copyright 2017 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/metrics_server_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/api_router.go | 1 | // Copyright 2017 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/proxy/https.go | 1 | // Copyright 2019 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/proxy/xtcp.go | 1 | // Copyright 2019 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/proxy/tcpmux.go | 1 | // Copyright 2020 guylewin, guy@lewin.co.il | COMMENT |
| LOW | server/proxy/xtcp_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/proxy/proxy.go | 1 | // Copyright 2017 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/proxy/sudp.go | 1 | // Copyright 2019 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/proxy/sudp_benchmark_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/proxy/stcp.go | 1 | // Copyright 2019 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/proxy/http.go | 1 | // Copyright 2019 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/proxy/udp.go | 1 | // Copyright 2019 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/proxy/tcp.go | 1 | // Copyright 2019 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/proxy/proxy_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/proxy/sudp_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/group/https.go | 1 | // Copyright 2025 The frp Authors | COMMENT |
| LOW | server/group/tcpmux.go | 1 | // Copyright 2020 guylewin, guy@lewin.co.il | COMMENT |
| LOW | server/group/group.go | 1 | // Copyright 2018 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/group/tcp.go | 1 | // Copyright 2018 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/controller/resource.go | 1 | // Copyright 2019 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/http/controller.go | 1 | // Copyright 2025 The frp Authors | COMMENT |
| LOW | server/http/controller_v2_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/http/controller_v2_proxy_spec_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/http/controller_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/http/controller_v2.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/http/model/types.go | 1 | // Copyright 2025 The frp Authors | COMMENT |
| LOW | server/http/model/v2.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/visitor/visitor_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | server/visitor/visitor.go | 1 | // Copyright 2019 fatedier, fatedier@gmail.com | COMMENT |
| LOW | server/registry/registry.go | 1 | // Copyright 2025 The frp Authors | COMMENT |
| LOW | server/registry/registry_test.go | 1 | // Copyright 2026 The frp Authors | COMMENT |
| LOW | assets/assets.go | 1 | // Copyright 2016 fatedier, fatedier@gmail.com | COMMENT |
| LOW | conf/frpc_full_example.toml | 21 | # console or real logFile path like ./frpc.log | COMMENT |
| LOW | conf/frpc_full_example.toml | 41 | COMMENT | |
| LOW | conf/frpc_full_example.toml | 61 | # Specify a custom CA certificate file for verifying the OIDC token endpoint's TLS certificate. | COMMENT |
| LOW | conf/frpc_full_example.toml | 81 | COMMENT | |
| LOW | conf/frpc_full_example.toml | 101 | COMMENT | |
| LOW | conf/frpc_full_example.toml | 121 | # supports v1 and v2, default is v1. v2 requires frps support and must be enabled explicitly. | COMMENT |
| LOW | conf/frpc_full_example.toml | 141 | transport.tls.enable = true | COMMENT |
| 257 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | conf/frpc_full_example.toml | 37 | # alternatively, you can use tokenSource to load the token from a file | COMMENT |
| MEDIUM | conf/frpc_full_example.toml | 257 | # Resolve your domain names to [serverAddr] so you can use http://web01.yourdomain.com to browse web01 and http://web02. | COMMENT |
| MEDIUM | conf/frps_full_example.toml | 122 | # alternatively, you can use tokenSource to load the token from a file | COMMENT |
| MEDIUM | conf/legacy/frpc_legacy_full.ini | 220 | # Resolve your domain names to [server_addr] so you can use http://web01.yourdomain.com to browse web01 and http://web02 | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | web/frpc/test/config-field.test.ts | 7 | props: ['modelValue', 'disabled', 'placeholder', 'type'], | CODE |
| LOW | web/frpc/test/config-field.test.ts | 10 | '<input :value="modelValue ?? \'\'" :disabled="disabled" :placeholder="placeholder" :type="type === \'password\' ? \ | CODE |
| LOW | web/frpc/src/components/ConfigField.vue | 8 | :placeholder="placeholder" | CODE |
| LOW | web/frpc/src/components/ConfigField.vue | 16 | :placeholder="placeholder" | CODE |
| LOW | web/frpc/src/components/ConfigField.vue | 57 | :placeholder="placeholder" | CODE |
| LOW | web/frpc/src/components/ConfigField.vue | 75 | :placeholder="placeholder" | CODE |
| LOW | web/frpc/src/components/StringListEditor.vue | 13 | :placeholder="placeholder" | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | hack/run-e2e.sh | 6 | # Check if ginkgo is available | COMMENT |