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log:
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x41d6c8]
goroutine 24456420 [running]:
[project path]/vendor/github.com/rs/dnscache.(*Resolver).load(0xc00077d7c0, 0xc002218b40, 0x29, 0xc001c11968, 0x451937, 0x0, 0xc001c11980, 0x2, 0x2)
#011/.go/src/[project path]/vendor/github.com/rs/dnscache/dnscache.go:160 +0x78
[project path]/vendor/github.com/rs/dnscache.(*Resolver).lookup(0xc00077d7c0, 0x1232d60, 0xc0000b2010, 0xc002218b40, 0x29, 0xc002218b40, 0x29, 0x28, 0x0, 0xc0035b0000)
#011/.go/src/[project path]/vendor/github.com/rs/dnscache/dnscache.go:77 +0x49
[project path]/vendor/github.com/rs/dnscache.(*Resolver).LookupHost(0xc00077d7c0, 0x1232d60, 0xc0000b2010, 0xc002218b10, 0x28, 0xc001c11ab0, 0x41716f, 0xc001925320, 0x120, 0x110)
#011/.go/src/[project path]/vendor/github.com/rs/dnscache/dnscache.go:44 +0xcd
[project name]/lib/httpx.dnsCachingDialContext.func1(0x1232d60, 0xc0000b2010, 0x1059afd, 0x3, 0xc002218b10, 0x2b, 0x4102a3, 0x682099, 0xc0000b2010, 0xef9640)
#011/.go/src/[project name]/lib/httpx/client.go:44 +0xd2
net/http.(*Transport).dial(0xc000463680, 0x1232d60, 0xc0000b2010, 0x1059afd, 0x3, 0xc002218b10, 0x2b, 0xc002874c00, 0x8, 0x8, ...)
#011/usr/local/go/src/net/http/transport.go:916 +0x20f
net/http.(*Transport).dialConn(0xc000463680, 0x1232d60, 0xc0000b2010, 0x0, 0xc0035b0000, 0x4, 0xc002218b10, 0x2b, 0x0, 0x0, ...)
#011/usr/local/go/src/net/http/transport.go:1240 +0x313
net/http.(*Transport).getConn.func4(0xc000463680, 0x1232d60, 0xc0000b2010, 0xc0036c4060, 0xc000c04a20)
#011/usr/local/go/src/net/http/transport.go:999 +0x6e
created by net/http.(*Transport).getConn
#011/usr/local/go/src/net/http/transport.go:998 +0x3d7
[project name].service: Main process exited, code=exited, status=2/INVALIDARGUMENT
[project name].service: Unit entered failed state.
[project name].service: Failed with result 'exit-code'.```
dnsCachingDialContext func:
func dnsCachingDialContext(r *dnscache.Resolver, timeout time.Duration) func(ctx context.Context, network, addr string) (net.Conn, error) {
return func(ctx context.Context, network string, addr string) (conn net.Conn, err error) {
separator := strings.LastIndex(addr, ":")
ips, err := r.LookupHost(ctx, addr[:separator])
if err != nil {
return nil, err
}
for _, ip := range ips {
conn, err = net.DialTimeout(network, ip+addr[separator:], timeout)
if err == nil {
break
}
}
return
}
}
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