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fix: 临时移除fast-mode-2026-02-01避免429问题

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This commit is contained in:
shaw
2026-02-26 15:42:49 +08:00
parent 0dd6986e28
commit 4ac57b4edf
3 changed files with 97 additions and 24 deletions
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5
backend/internal/pkg/claude/constants.go
View File

@@ -11,8 +11,13 @@ const (
BetaFineGrainedToolStreaming = "fine-grained-tool-streaming-2025-05-14"
BetaTokenCounting = "token-counting-2024-11-01"
BetaContext1M = "context-1m-2025-08-07"
BetaFastMode = "fast-mode-2026-02-01"
)
// DroppedBetas 是转发时需要从 anthropic-beta header 中移除的 beta token 列表。
// 这些 token 是客户端特有的，不应透传给上游 API。
var DroppedBetas = []string{BetaContext1M, BetaFastMode}
// DefaultBetaHeader Claude Code 客户端默认的 anthropic-beta header
const DefaultBetaHeader = BetaClaudeCode + "," + BetaOAuth + "," + BetaInterleavedThinking + "," + BetaFineGrainedToolStreaming

72
backend/internal/service/gateway_beta_test.go
View File

@@ -3,6 +3,8 @@ package service
import (
"testing"
"github.com/Wei-Shaw/sub2api/internal/pkg/claude"
"github.com/stretchr/testify/require"
)
@@ -22,60 +24,78 @@ func TestMergeAnthropicBeta_EmptyIncoming(t *testing.T) {
require.Equal(t, "oauth-2025-04-20,interleaved-thinking-2025-05-14", got)
}
func TestStripBetaToken(t *testing.T) {
func TestStripBetaTokens(t *testing.T) {
tests := []struct {
name string
header string
token string
tokens []string
want string
}{
{
name: "token in middle",
name: "single token in middle",
header: "oauth-2025-04-20,context-1m-2025-08-07,interleaved-thinking-2025-05-14",
token: "context-1m-2025-08-07",
tokens: []string{"context-1m-2025-08-07"},
want: "oauth-2025-04-20,interleaved-thinking-2025-05-14",
},
{
name: "token at start",
name: "single token at start",
header: "context-1m-2025-08-07,oauth-2025-04-20,interleaved-thinking-2025-05-14",
token: "context-1m-2025-08-07",
tokens: []string{"context-1m-2025-08-07"},
want: "oauth-2025-04-20,interleaved-thinking-2025-05-14",
},
{
name: "token at end",
name: "single token at end",
header: "oauth-2025-04-20,interleaved-thinking-2025-05-14,context-1m-2025-08-07",
token: "context-1m-2025-08-07",
tokens: []string{"context-1m-2025-08-07"},
want: "oauth-2025-04-20,interleaved-thinking-2025-05-14",
},
{
name: "token not present",
header: "oauth-2025-04-20,interleaved-thinking-2025-05-14",
token: "context-1m-2025-08-07",
tokens: []string{"context-1m-2025-08-07"},
want: "oauth-2025-04-20,interleaved-thinking-2025-05-14",
},
{
name: "empty header",
header: "",
token: "context-1m-2025-08-07",
tokens: []string{"context-1m-2025-08-07"},
want: "",
},
{
name: "with spaces",
header: "oauth-2025-04-20, context-1m-2025-08-07 , interleaved-thinking-2025-05-14",
token: "context-1m-2025-08-07",
tokens: []string{"context-1m-2025-08-07"},
want: "oauth-2025-04-20,interleaved-thinking-2025-05-14",
},
{
name: "only token",
header: "context-1m-2025-08-07",
token: "context-1m-2025-08-07",
tokens: []string{"context-1m-2025-08-07"},
want: "",
},
{
name: "nil tokens",
header: "oauth-2025-04-20,interleaved-thinking-2025-05-14",
tokens: nil,
want: "oauth-2025-04-20,interleaved-thinking-2025-05-14",
},
{
name: "multiple tokens removed",
header: "oauth-2025-04-20,context-1m-2025-08-07,interleaved-thinking-2025-05-14,fast-mode-2026-02-01",
tokens: []string{"context-1m-2025-08-07", "fast-mode-2026-02-01"},
want: "oauth-2025-04-20,interleaved-thinking-2025-05-14",
},
{
name: "DroppedBetas removes both context-1m and fast-mode",
header: "oauth-2025-04-20,context-1m-2025-08-07,fast-mode-2026-02-01,interleaved-thinking-2025-05-14",
tokens: claude.DroppedBetas,
want: "oauth-2025-04-20,interleaved-thinking-2025-05-14",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := stripBetaToken(tt.header, tt.token)
got := stripBetaTokens(tt.header, tt.tokens)
require.Equal(t, tt.want, got)
})
}
@@ -90,3 +110,29 @@ func TestMergeAnthropicBetaDropping_Context1M(t *testing.T) {
require.Equal(t, "oauth-2025-04-20,interleaved-thinking-2025-05-14,foo-beta", got)
require.NotContains(t, got, "context-1m-2025-08-07")
}
func TestMergeAnthropicBetaDropping_DroppedBetas(t *testing.T) {
required := []string{"oauth-2025-04-20", "interleaved-thinking-2025-05-14"}
incoming := "context-1m-2025-08-07,fast-mode-2026-02-01,foo-beta,oauth-2025-04-20"
drop := droppedBetaSet()
got := mergeAnthropicBetaDropping(required, incoming, drop)
require.Equal(t, "oauth-2025-04-20,interleaved-thinking-2025-05-14,foo-beta", got)
require.NotContains(t, got, "context-1m-2025-08-07")
require.NotContains(t, got, "fast-mode-2026-02-01")
}
func TestDroppedBetaSet(t *testing.T) {
// Base set contains DroppedBetas
base := droppedBetaSet()
require.Contains(t, base, claude.BetaContext1M)
require.Contains(t, base, claude.BetaFastMode)
require.Len(t, base, len(claude.DroppedBetas))
// With extra tokens
extended := droppedBetaSet(claude.BetaClaudeCode)
require.Contains(t, extended, claude.BetaContext1M)
require.Contains(t, extended, claude.BetaFastMode)
require.Contains(t, extended, claude.BetaClaudeCode)
require.Len(t, extended, len(claude.DroppedBetas)+1)
}

44
backend/internal/service/gateway_service.go
View File

@@ -4425,12 +4425,12 @@ func (s *GatewayService) buildUpstreamRequest(ctx context.Context, c *gin.Contex
// messages requests typically use only oauth + interleaved-thinking.
// Also drop claude-code beta if a downstream client added it.
requiredBetas := []string{claude.BetaOAuth, claude.BetaInterleavedThinking}
drop := map[string]struct{}{claude.BetaClaudeCode: {}, claude.BetaContext1M: {}}
drop := droppedBetaSet(claude.BetaClaudeCode)
req.Header.Set("anthropic-beta", mergeAnthropicBetaDropping(requiredBetas, incomingBeta, drop))
} else {
// Claude Code 客户端：尽量透传原始 header，仅补齐 oauth beta
clientBetaHeader := req.Header.Get("anthropic-beta")
req.Header.Set("anthropic-beta", stripBetaToken(s.getBetaHeader(modelID, clientBetaHeader), claude.BetaContext1M))
req.Header.Set("anthropic-beta", stripBetaTokens(s.getBetaHeader(modelID, clientBetaHeader), claude.DroppedBetas))
}
} else if s.cfg != nil && s.cfg.Gateway.InjectBetaForAPIKey && req.Header.Get("anthropic-beta") == "" {
// API-key：仅在请求显式使用 beta 特性且客户端未提供时，按需补齐（默认关闭）
@@ -4584,23 +4584,45 @@ func mergeAnthropicBetaDropping(required []string, incoming string, drop map[str
return strings.Join(out, ",")
}
// stripBetaToken removes a single beta token from a comma-separated header value.
// It short-circuits when the token is not present to avoid unnecessary allocations.
func stripBetaToken(header, token string) string {
if !strings.Contains(header, token) {
// stripBetaTokens removes the given beta tokens from a comma-separated header value.
func stripBetaTokens(header string, tokens []string) string {
if header == "" || len(tokens) == 0 {
return header
}
out := make([]string, 0, 8)
for _, p := range strings.Split(header, ",") {
drop := make(map[string]struct{}, len(tokens))
for _, t := range tokens {
drop[t] = struct{}{}
}
parts := strings.Split(header, ",")
out := make([]string, 0, len(parts))
for _, p := range parts {
p = strings.TrimSpace(p)
if p == "" || p == token {
if p == "" {
continue
}
if _, ok := drop[p]; ok {
continue
}
out = append(out, p)
}
if len(out) == len(parts) {
return header // no change, avoid allocation
}
return strings.Join(out, ",")
}
// droppedBetaSet returns claude.DroppedBetas as a set, with optional extra tokens.
func droppedBetaSet(extra ...string) map[string]struct{} {
m := make(map[string]struct{}, len(claude.DroppedBetas)+len(extra))
for _, t := range claude.DroppedBetas {
m[t] = struct{}{}
}
for _, t := range extra {
m[t] = struct{}{}
}
return m
}
// applyClaudeCodeMimicHeaders forces "Claude Code-like" request headers.
// This mirrors opencode-anthropic-auth behavior: do not trust downstream
// headers when using Claude Code-scoped OAuth credentials.
@@ -6385,7 +6407,7 @@ func (s *GatewayService) buildCountTokensRequest(ctx context.Context, c *gin.Con
incomingBeta := req.Header.Get("anthropic-beta")
requiredBetas := []string{claude.BetaClaudeCode, claude.BetaOAuth, claude.BetaInterleavedThinking, claude.BetaTokenCounting}
drop := map[string]struct{}{claude.BetaContext1M: {}}
drop := droppedBetaSet()
req.Header.Set("anthropic-beta", mergeAnthropicBetaDropping(requiredBetas, incomingBeta, drop))
} else {
clientBetaHeader := req.Header.Get("anthropic-beta")
@@ -6396,7 +6418,7 @@ func (s *GatewayService) buildCountTokensRequest(ctx context.Context, c *gin.Con
if !strings.Contains(beta, claude.BetaTokenCounting) {
beta = beta + "," + claude.BetaTokenCounting
}
req.Header.Set("anthropic-beta", stripBetaToken(beta, claude.BetaContext1M))
req.Header.Set("anthropic-beta", stripBetaTokens(beta, claude.DroppedBetas))
}
}
} else if s.cfg != nil && s.cfg.Gateway.InjectBetaForAPIKey && req.Header.Get("anthropic-beta") == "" {