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Author: Eric Voskuil
Date:  
To: Police Terror, libbitcoin
Subject: Re: [Libbitcoin] Master libbitcoin-server on testnet
It looks like this could be a distinct issue from what has been logged.
It appears that the RNG is not thread safe on some platforms, which
means a bit of rework in a few areas. I've added this:

https://github.com/libbitcoin/libbitcoin-network/issues/72

e

On 10/21/2016 07:39 AM, Police Terror wrote:
> However this code works fine:
>
> #include <random>
>
> uint64_t pseudo_random()
> {
>     std::random_device device;
>     std::uniform_int_distribution<uint64_t> distribution;
>     return distribution(device);
> }

>
> int main()
> {
>     pseudo_random();
>     return 0;
> }

>
> Police Terror:
>> I'm using the current master branch to sync with testnet, but I'm
>> getting this error:
>>
>> ...
>> 14:15:56.657549 WARNING [server] Failed to connect secure notification
>> worker: operation failed
>> 14:15:56.756083 WARNING [server] Failed to connect secure notification
>> worker: operation failed
>> terminate called after throwing an instance of 'std::runtime_error'
>> what(): random_device::random_device(const std::string&)
>> 14:15:57.415901 INFO [server] Stop signal detected (code: 6).
>> Aborted (core dumped)
>>
>> Here's what debug.log is showing:
>>
>> 14:15:57.415478 DEBUG [network] Failure connecting outbound: operation
>> failed
>> 14:15:57.415501 DEBUG [network] Failure connecting outbound: operation
>> failed
>> 14:15:57.415570 DEBUG [node] Redundant block
>> [0000000057bd296621bc2f314e3594c412a0cd9e94f1083554c3184160612450] from
>> [177.189.250.198:18333]
>> 14:15:57.415605 DEBUG [network] Connecting to [121.40.72.188:18333]
>> 14:15:57.415703 DEBUG [network] Valid block payload from
>> [177.189.250.198:18333] (207 bytes)
>> 14:15:57.415757 DEBUG [network] Connecting to [212.93.226.185:18333]
>> 14:15:57.415816 DEBUG [network] Connecting to [2.55.186.124:18333]
>> 14:15:57.415901 INFO [server] Stop signal detected (code: 6).
>> 14:15:57.415937 DEBUG [node] Redundant block
>> [000000008a675b534ea86b312f29c9fdcce7b7b07ca1879c144b8e20215ac201] from
>> [177.189.250.198:18333]
>> 14:15:57.416008 DEBUG [network] Valid block payload from
>> [177.189.250.198:18333] (207 bytes)
>> g
>>
>> I've attached the .cfg file I'm using.
>>
>> Looking at libbitcoin/src/utility/random.cpp, I see that
>> nonzero_pseudo_random() is throwing. Why isn't that an assert instead?
>>
>> https://github.com/libbitcoin/libbitcoin/blob/master/src/utility/random.cpp#L46
>>
>> Here is the backtrace:
>>
>> #9  libbitcoin::pseudo_random () at src/utility/random.cpp:39
>> #10 0x00007ffff5a3d48d in libbitcoin::network::hosts::fetch
>> (this=this@entry=0x657310,
>>     out=...) at src/collections/hosts.cpp:76
>> #11 0x00007ffff5a27e7a in
>> libbitcoin::network::p2p::fetch_address(std::function<void
>> (std::error_code const&, libbitcoin::message::network_address const&)>)
>> const (this=0x656ad0,
>>     handler=...) at src/p2p.cpp:430
>> #12 0x00007ffff5a5ae5f in
>> libbitcoin::network::session::fetch_address(std::function<void
>> (std::error_code const&, libbitcoin::config::authority const&)>) const (
>>     this=this@entry=0x7fff280d6330, handler=...) at
>> src/sessions/session.cpp:83
>> #13 0x00007ffff5a6064e in
>> libbitcoin::network::session_batch::new_connect(std::shared_ptr<libbitcoin::network::connector>,
>> std::function<void (std::error_code const&,
>> std::shared_ptr<libbitcoin::network::channel>)>)
>> (this=this@entry=0x7fff280d6330,
>>     connect=std::shared_ptr (count 115, weak 1) 0x7ffef03f5760, handler=...)
>>     at src/sessions/session_batch.cpp:70
>> #14 0x00007ffff5a60b53 in
>> libbitcoin::network::session_batch::connect(std::shared_ptr<libbitcoin::network::connector>,
>> std::function<void (std::error_code const&,
>> std::shared_ptr<libbitcoin::network::channel>)>) (this=0x7fff280d6330,
>>     connect=std::shared_ptr (count 115, weak 1) 0x7ffef03f5760, handler=...)
>>     at src/sessions/session_batch.cpp:56
>> #15 0x00007ffff5a6f335 in
>> libbitcoin::network::session_outbound::new_connection (
>>     this=this@entry=0x7fff280d6330,
>>     connect=std::shared_ptr (count 115, weak 1) 0x7ffef03f5760)
>>     at src/sessions/session_outbound.cpp:87
>> #16 0x00007ffff5a6f7d1 in
>> libbitcoin::network::session_outbound::handle_connect (
>>     this=0x7fff280d6330, ec=..., channel=...,
>>     connect=std::shared_ptr (count 115, weak 1) 0x7ffef03f5760)
>>     at src/sessions/session_outbound.cpp:97

>>
>>
>>
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