Class HttpPatchServerService

Namespace

FishMMO.Client

Assembly

FishMMO.Client.dll

Unity-backed patch service implementation for endpoint discovery, version checks, and patch downloads.

public class HttpPatchServerService : MonoBehaviour, IPatchServerService

Inheritance

object

Object

Component

Behaviour

MonoBehaviour

HttpPatchServerService

Implements

IPatchServerService

Inherited Members

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Properties

MaxRetries

Maximum number of retries for each web request.

public int MaxRetries { get; }

Property Value

int

RetryDelay

Delay in seconds between retries for web requests.

public float RetryDelay { get; }

Property Value

float

WebRequestService

Service for handling Unity web requests.

public UnityWebRequestService WebRequestService { get; }

Property Value

UnityWebRequestService

WebRequestTimeout

Timeout in seconds for each individual web request.

public int WebRequestTimeout { get; }

Property Value

int

Methods

DownloadPatch(string, string, string, long, Action<bool>, Action<string>, Action<DownloadStats>)

Downloads a patch file from the given URL to a temporary file path, reporting progress and completion via callbacks. When expectedSha256 is non-empty, the downloaded file is hashed after the transfer completes and the operation fails if the digest does not match (the partial file is deleted).

public IEnumerator DownloadPatch(string patchUrl, string destinationFilePath, string expectedSha256, long expectedTotalBytes, Action<bool> onComplete, Action<string> onError, Action<DownloadStats> onProgress)

Parameters

patchUrl string

The URL to download the patch from.

destinationFilePath string

Full path (including file name) to save the patch archive to.

expectedSha256 string

Lowercase hex SHA-256 the downloaded file must match, or null/empty to skip verification.

expectedTotalBytes long

Expected size from the version manifest, or 0 when unknown.

onComplete Action<bool>

Callback for successful download. The argument is false when the server reported the client is already up to date.

onError Action<string>

Callback for error handling.

onProgress Action<DownloadStats>

Callback for progress updates.

Returns

IEnumerator

Coroutine enumerator.

GetLatestVersion(string, string, Action<VersionConfig, PatchInfo>, Action<string>)

Fetches the latest version from the API gateway and returns it via callback. Also returns optional per-version PatchInfo (SHA-256, size, availability) when clientVersion is supplied.

public IEnumerator GetLatestVersion(string apiHost, string clientVersion, Action<VersionConfig, PatchInfo> onComplete, Action<string> onError)

Parameters

apiHost string

The unified API host URL.

clientVersion string

Client's current version string, or null/empty.

onComplete Action<VersionConfig, PatchInfo>

Callback for successful version fetch.

onError Action<string>

Callback for error handling.

Returns

IEnumerator

Coroutine enumerator.

Remarks

Manifest integrity (was the TODO above this method; S4). The response is verified with Ed25519 against GeneratedPinSet.VersionManifestPublicKeyBase64 before ANY field in it is read. That matters because the manifest is trusted absolutely downstream: its sha256 is the only integrity check applied to the patch archive, so whoever writes the manifest chooses which bytes the updater installs, and its latest_version becomes part of a file path. TLS authenticates the transport and nothing else — it says nothing about a compromised gateway, a mis-issued certificate, or a CDN edge serving a substituted document.

Fail-closed, with one deliberate exception. When a verification key is embedded, a manifest that does not verify is discarded and the version check fails — no partial trust, no "use it but warn". When NO key is embedded, signing is not configured for this deployment: the client falls back to the previous SHA-256-over-pinned-TLS posture and says so at Error level on every check in a release build. That exception exists so operators can adopt signing without every existing install breaking the moment this ships; it is loud precisely so it does not become the permanent state. The editor build validator reports the same thing at build time.