[xysele]

中文说明

当策略组所属订阅设置了前置或后置代理时，配置生成器会将该策略组包装为虚拟 ProxyChain。原实现没有保留策略组的 MultipleLoad，导致生成的 Xray balancer 回退为 leastPing。例如，订阅设置后置代理后，即使选择“负载均衡”（RoundRobin），生成配置仍使用 leastPing。

批量测速配置也存在相同的策略回退问题：它从批次占位节点读取策略，而非当前被测策略组。

改动

• 构建订阅代理链时，保留被包装节点的 MultipleLoad。
• 生成批量测速的 balancer 和探测配置时，使用当前解析后的被测项所选策略。
• 增加回归测试，覆盖全部五种策略及仅前置、仅后置、同时前置和后置的订阅代理链组合，包括故障转移策略的参数；同时覆盖包含不同策略组的批量测速。

未指定策略时仍默认使用 LeastPing。不涉及数据库迁移或配置格式变更。

验证

• 新增测试在修复前复现了五项失败。
• dotnet test --project v2rayN/ServiceLib.Tests -c Release --no-restore：142 项测试通过。
• dotnet build v2rayN/v2rayN.Desktop/v2rayN.Desktop.csproj -c Release --no-restore：在 macOS arm64 上构建通过，0 警告、0 错误。
• 使用受影响配置数据的副本生成配置，策略由 leastPing 改为 roundRobin；修复前后的 outbound 数量均为 16。
• Xray 26.3.27 通过 run -test 校验修复后的配置，输出 Configuration OK.。
• git diff --check 通过。

已在 macOS 确认本次报告的配置问题。两处修复均位于共享的 ServiceLib 代码中；Windows 尚未实机验证。

English

When a policy group belongs to a subscription with a previous or next proxy, it is wrapped in a virtual ProxyChain. That wrapper currently drops the group's MultipleLoad, so the generated Xray balancer falls back to leastPing. For example, selecting load balancing (RoundRobin) still produces leastPing when a subscription post proxy is configured.

Batch speed-test configuration has the same fallback problem: it reads the strategy from the batch's dummy node rather than the current group.

Changes

• Preserve the wrapped node's MultipleLoad when building a subscription proxy chain.
• Use the current resolved item's strategy when generating batch speed-test balancers and observatories.
• Add regression coverage for all five strategies with previous-only, next-only, and combined subscription chains, including fallback settings; also test a batch containing groups with different strategies.

The existing LeastPing default remains in place when no strategy is specified. There are no database migrations or configuration schema changes.

Validation

• The new tests reproduced five failures before the fix.
• dotnet test --project v2rayN/ServiceLib.Tests -c Release --no-restore: 142 tests passed.
• dotnet build v2rayN/v2rayN.Desktop/v2rayN.Desktop.csproj -c Release --no-restore: passed on macOS arm64 with 0 warnings and 0 errors.
• Generating configuration from a copy of the affected profile data changed the strategy from leastPing to roundRobin; both configurations contained 16 outbounds.
• Xray 26.3.27 accepted the fixed configuration with run -test: Configuration OK.
• git diff --check: passed.

The reported configuration issue was confirmed on macOS. Both fixes are in shared ServiceLib code; Windows has not been verified on a physical installation.

Fixes #10435