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extend core proxy options and handling #4871

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@Diapolo
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Diapolo commented Sep 8, 2014

  • rework the proxy handling in init to cover more cases and work more
    thoroughly
  • extend RPC call getnetwork info to see if IPv6 and Tor proxy is the
    default proxy

See #2575 for discussion!

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Diapolo commented Sep 8, 2014

@laanwj As you suggested, a new and clean pull and empty discussion ;).

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Diapolo commented Sep 23, 2014

@laanwj Can you please have a look again, I hope we can sort this out now finally :).

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BitcoinPullTester commented Sep 23, 2014

Automatic sanity-testing: PASSED, see http://jenkins.bluematt.me/pull-tester/p4871_2711cda5b8c54efb2164d7bb3593b3db50f8e15c/ for binaries and test log.
This test script verifies pulls every time they are updated. It, however, dies sometimes and fails to test properly. If you are waiting on a test, please check timestamps to verify that the test.log is moving at http://jenkins.bluematt.me/pull-tester/current/
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Diapolo commented Oct 6, 2014

Rebased and removed an obsolete c_str().

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Diapolo commented Oct 10, 2014

@laanwj This and the GUI part are pulls that are not cosmetic, but need review or ACKs.

@laanwj
laanwj reviewed Oct 10, 2014
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src/rpcnet.cpp Outdated
obj.push_back(Pair("name", GetNetworkName(network)));
obj.push_back(Pair("limited", IsLimited(network)));
obj.push_back(Pair("reachable", IsReachable(network)));
obj.push_back(Pair("proxy", proxy.IsValid() ? proxy.ToStringIPPort() : string()));
if (network != NET_IPV4)
obj.push_back(Pair("proxy-from-default", proxy == proxyDefault));

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laanwj Oct 10, 2014

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As said before - I'm still not convinced that proxy-from-default is useful information. Clients requesting from RPC just want to know the currently effective state, it shouldn't matter how it came that way. For troubleshooting command line argument interaction there's always debug.log.

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Diapolo Oct 14, 2014

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Alright, removing this will finally make the pull get merged then?

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laanwj Oct 14, 2014

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The main problem here is that we don't have testcases with proxy, so this needs to be manually tested. Can you list what you tested?

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Diapolo commented Nov 28, 2014

Updated to include changes that were merged in #5358. @gmaxwell Mind reviewing this now?

@laanwj laanwj added the P2P label Dec 3, 2014
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fanquake commented Jan 23, 2015

Needs rebase

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Diapolo commented Jan 23, 2015

Rebased, needs review / testing.

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laanwj commented Mar 13, 2015

To be clear what this is blocked on: We need (RPC) tests for the proxy functionality, before we can merge changes like this.

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Diapolo commented Apr 23, 2015

@laanwj Rebased to include the recent -proxyrandomize change. Also as a proxy test was added, this should be less controversial if tests pass I guess :).

obj.push_back(Pair("name", GetNetworkName(network)));
obj.push_back(Pair("limited", IsLimited(network)));
obj.push_back(Pair("reachable", IsReachable(network)));
obj.push_back(Pair("proxy", proxy.IsValid() ? proxy.proxy.ToStringIPPort() : string()));
obj.push_back(Pair("proxy_randomize_credentials", proxy.randomize_credentials));
if (network != NET_IPV4)
obj.push_back(Pair("proxy-from-default", proxy.proxy == proxyDefault.proxy));

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laanwj May 6, 2015

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Let's remove proxy-from-default, it's not useful information and will always be true anyway according to the above code.

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Diapolo May 14, 2015

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I'll remove it :).

Philip Kaufmann
- rework the proxy handling in init to cover more cases and work more
  thoroughly
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Diapolo commented May 14, 2015

@laanwj Removed changes to rpcnet.cpp.

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Diapolo commented May 31, 2015

@laanwj This is passing proxy tests and I removed what you didn't like. Anything I can do to get this forward finally?

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laanwj commented Jun 10, 2015

I'm terribly sorry sorry for holding this up so long, but I'm not convinced that the new logic is any better.

The logical flow here sounds to me:

  • Parse default -proxy, apply to all nets, as well as the name proxy
  • Parse onion-specific proxy -onion, apply to NET_TOR. This overrides the default set in the first step, if any

All errors during parsing of either setting should be fatal, to avoid that the user is running with different settings than they expect.

This is nearer to the original code than yours. I certainly think the code could be simplified and made more clear, what do you think about:

    bool proxyRandomize = GetBoolArg("-proxyrandomize", true);
    // -proxy sets a proxy for all outgoing network traffic
    // -noproxy (or -proxy=0) as well as the empty string can be used to not set a proxy, this is the default
    std::string proxyArg = GetArg("-proxy", "");
    if (proxyArg != "" && proxyArg != "0") {
        proxyType addrProxy = proxyType(CService(proxyArg, 9050), proxyRandomize);
        if (!addrProxy.IsValid())
            return InitError(strprintf(_("Invalid -proxy address: '%s'"), proxyArg));

        SetProxy(NET_IPV4, addrProxy);
        SetProxy(NET_IPV6, addrProxy);
        SetProxy(NET_TOR, addrProxy);
        SetNameProxy(addrProxy);
        SetReachable(NET_TOR); // by default, -proxy sets onion as reachable, unless -noonion later
    }

    // -onion can override normal proxy for .onion addresses
    // -noonion (or -onion=0) disables connecting to .onion entirely
    // An empty string is used to just not override the onion proxy
    std::string onionArg = GetArg("-onion", "");
    if (onionArg != "") {
        if (onionArg == "0") { // Handle -noonion/-onion=0
            SetReachable(NET_TOR, false); // set onions as unreachable
        } else {
            proxyType addrOnion;
            addrOnion = proxyType(CService(onionArg, 9050), proxyRandomize);
            if (!addrOnion.IsValid())
                return InitError(strprintf(_("Invalid -onion address: '%s'"), onionArg));
            SetProxy(NET_TOR, addrOnion);
            SetReachable(NET_TOR);
        }
    }

This provides a straightforward flow, gets rid of .count() (which is what you needed for the GUI, as it makes it possible to override an earlier provided proxy option to nothing), as well as comments the different cases.

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laanwj commented Jun 12, 2015

Closing in favor of #6272

@laanwj laanwj closed this Jun 12, 2015
@Diapolo Diapolo deleted the Diapolo:proxy-core branch Jun 12, 2015
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