mirror of
https://github.com/2dust/v2rayN.git
synced 2026-10-29 08:35:00 +03:00
Optimize proxy chain handling for multiple nodes (#7468)
* Improves outbound proxy chain handling. * Improves sing-box outbound proxy chain handling. * AI-optimized code
This commit is contained in:
DHR60
GitHub
@@ -336,7 +336,7 @@ public class CoreConfigSingboxService
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await GenExperimental(singboxConfig);
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singboxConfig.outbounds.RemoveAt(0);
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var tagProxy = new List<string>();
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var proxyProfiles = new List<ProfileItem>();
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foreach (var it in selecteds)
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{
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if (it.ConfigType == EConfigType.Custom)
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@@ -370,42 +370,18 @@ public class CoreConfigSingboxService
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}
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//outbound
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var outbound = JsonUtils.Deserialize<Outbound4Sbox>(txtOutbound);
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await GenOutbound(item, outbound);
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outbound.tag = $"{Global.ProxyTag}-{tagProxy.Count + 1}";
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singboxConfig.outbounds.Insert(0, outbound);
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tagProxy.Add(outbound.tag);
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proxyProfiles.Add(item);
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}
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if (tagProxy.Count <= 0)
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if (proxyProfiles.Count <= 0)
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{
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ret.Msg = ResUI.FailedGenDefaultConfiguration;
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return ret;
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}
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await GenOutboundsList(proxyProfiles, singboxConfig);
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await GenDns(null, singboxConfig);
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await ConvertGeo2Ruleset(singboxConfig);
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//add urltest outbound
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var outUrltest = new Outbound4Sbox
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{
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type = "urltest",
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tag = $"{Global.ProxyTag}-auto",
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outbounds = tagProxy,
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interrupt_exist_connections = false,
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};
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singboxConfig.outbounds.Insert(0, outUrltest);
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//add selector outbound
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var outSelector = new Outbound4Sbox
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{
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type = "selector",
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tag = Global.ProxyTag,
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outbounds = JsonUtils.DeepCopy(tagProxy),
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interrupt_exist_connections = false,
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};
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outSelector.outbounds.Insert(0, outUrltest.tag);
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singboxConfig.outbounds.Insert(0, outSelector);
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ret.Success = true;
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ret.Data = JsonUtils.Serialize(singboxConfig);
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return ret;
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@@ -974,6 +950,179 @@ public class CoreConfigSingboxService
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return 0;
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}
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private async Task<int> GenOutboundsList(List<ProfileItem> nodes, SingboxConfig singboxConfig)
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{
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try
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{
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// Get outbound template and initialize lists
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var txtOutbound = EmbedUtils.GetEmbedText(Global.SingboxSampleOutbound);
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if (txtOutbound.IsNullOrEmpty())
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{
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return 0;
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}
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var resultOutbounds = new List<Outbound4Sbox>();
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var prevOutbounds = new List<Outbound4Sbox>(); // Separate list for prev outbounds
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var proxyTags = new List<string>(); // For selector and urltest outbounds
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// Cache for chain proxies to avoid duplicate generation
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var chainProxyCache = new Dictionary<string, (string?, Outbound4Sbox?)>();
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var prevProxyTags = new Dictionary<string, string>(); // Map from profile name to tag
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int prevIndex = 0; // Index for prev outbounds
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// Process each node
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int index = 0;
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foreach (var node in nodes)
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{
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index++;
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// Skip unsupported config types
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if (node.ConfigType is EConfigType.Custom)
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{
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continue;
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}
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// Handle proxy chain
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string? prevTag = null;
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Outbound4Sbox? nextOutbound = null;
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if (node.Subid.IsNotEmpty())
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{
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// Check if chain proxy is already cached
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if (chainProxyCache.TryGetValue(node.Subid, out var chainProxy))
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{
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prevTag = chainProxy.Item1;
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nextOutbound = chainProxy.Item2;
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}
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else
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{
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// Generate chain proxy and cache it
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var subItem = await AppHandler.Instance.GetSubItem(node.Subid);
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if (subItem != null)
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{
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// Process previous proxy
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if (!subItem.PrevProfile.IsNullOrEmpty())
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{
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// Check if this previous proxy was already created
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if (prevProxyTags.TryGetValue(subItem.PrevProfile, out var existingTag))
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{
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prevTag = existingTag;
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}
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else
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{
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var prevNode = await AppHandler.Instance.GetProfileItemViaRemarks(subItem.PrevProfile);
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if (prevNode != null && prevNode.ConfigType != EConfigType.Custom)
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{
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prevIndex++;
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var prevOutbound = JsonUtils.Deserialize<Outbound4Sbox>(txtOutbound);
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await GenOutbound(prevNode, prevOutbound);
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prevTag = $"{Global.ProxyTag}-prev-{prevIndex}";
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prevOutbound.tag = prevTag;
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prevProxyTags[subItem.PrevProfile] = prevTag;
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// Add to prev outbounds list (will be added at the end)
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prevOutbounds.Add(prevOutbound);
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}
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}
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}
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// Process next proxy
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var nextNode = await AppHandler.Instance.GetProfileItemViaRemarks(subItem.NextProfile);
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if (nextNode != null && nextNode.ConfigType != EConfigType.Custom)
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{
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nextOutbound = JsonUtils.Deserialize<Outbound4Sbox>(txtOutbound);
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await GenOutbound(nextNode, nextOutbound);
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}
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// Cache the chain proxy
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chainProxyCache[node.Subid] = (prevTag, nextOutbound);
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}
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}
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}
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// Create main outbound
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var outbound = JsonUtils.Deserialize<Outbound4Sbox>(txtOutbound);
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await GenOutbound(node, outbound);
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outbound.tag = $"{Global.ProxyTag}-{index}";
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// Configure proxy chain relationships
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if (nextOutbound != null)
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{
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// If there's a next proxy, it should be the final outbound in the chain
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var originalTag = outbound.tag;
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outbound.tag = $"mid-{Global.ProxyTag}-{index}";
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var nextOutboundCopy = JsonUtils.DeepCopy(nextOutbound);
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nextOutboundCopy.tag = originalTag;
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nextOutboundCopy.detour = outbound.tag; // Use detour instead of sockopt
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if (prevTag != null)
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{
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outbound.detour = prevTag;
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}
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// Add to proxy tags for selector/urltest
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proxyTags.Add(originalTag);
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// Add in reverse order to ensure final outbound is added first
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resultOutbounds.Add(nextOutboundCopy); // Final outbound (exposed to internet)
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resultOutbounds.Add(outbound); // Middle outbound
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}
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else
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{
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// If no next proxy, the main outbound is the final one
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if (prevTag != null)
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{
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outbound.detour = prevTag;
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}
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// Add to proxy tags for selector/urltest
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proxyTags.Add(outbound.tag);
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resultOutbounds.Add(outbound);
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}
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}
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// Add urltest outbound (auto selection based on latency)
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if (proxyTags.Count > 0)
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{
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var outUrltest = new Outbound4Sbox
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{
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type = "urltest",
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tag = $"{Global.ProxyTag}-auto",
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outbounds = proxyTags,
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interrupt_exist_connections = false,
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};
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// Add selector outbound (manual selection)
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var outSelector = new Outbound4Sbox
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{
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type = "selector",
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tag = Global.ProxyTag,
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outbounds = JsonUtils.DeepCopy(proxyTags),
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interrupt_exist_connections = false,
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};
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outSelector.outbounds.Insert(0, outUrltest.tag);
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// Insert these at the beginning
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resultOutbounds.Insert(0, outUrltest);
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resultOutbounds.Insert(0, outSelector);
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}
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// Merge results: first the selector/urltest/proxies, then other outbounds, and finally prev outbounds
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resultOutbounds.AddRange(prevOutbounds);
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resultOutbounds.AddRange(singboxConfig.outbounds);
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singboxConfig.outbounds = resultOutbounds;
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}
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catch (Exception ex)
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{
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Logging.SaveLog(_tag, ex);
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}
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return 0;
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}
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private async Task<int> GenRouting(SingboxConfig singboxConfig)
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{
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try
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