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Add finer-grained control for incoming & outgoing peer limits:

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This commit replaces the `peers_max` configuration element which had
a predetermined split between incoming and outgoing connections with
two new configuration options, `peers_in_max` and `peers_out_max`,
which server operators can use to explicitly control the number of
incoming and outgoing peer slots.
This commit is contained in:
Gregory Tsipenyuk
2020-09-23 18:03:45 -04:00
committed by Nik Bougalis
parent 7ddf856d58
commit bec6c626d8
8 changed files with 265 additions and 79 deletions
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38
src/ripple/core/impl/Config.cpp
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@@ -366,7 +366,45 @@ Config::loadFromString(std::string const& fileContents)
PEER_PRIVATE = beast::lexicalCastThrow<bool>(strTemp);
if (getSingleSection(secConfig, SECTION_PEERS_MAX, strTemp, j_))
{
PEERS_MAX = beast::lexicalCastThrow<std::size_t>(strTemp);
}
else
{
std::optional<std::size_t> peers_in_max{};
if (getSingleSection(secConfig, SECTION_PEERS_IN_MAX, strTemp, j_))
{
peers_in_max = beast::lexicalCastThrow<std::size_t>(strTemp);
if (*peers_in_max > 1000)
Throw<std::runtime_error>(
"Invalid value specified in [" SECTION_PEERS_IN_MAX
"] section; the value must be less or equal than 1000");
}
std::optional<std::size_t> peers_out_max{};
if (getSingleSection(secConfig, SECTION_PEERS_OUT_MAX, strTemp, j_))
{
peers_out_max = beast::lexicalCastThrow<std::size_t>(strTemp);
if (*peers_out_max < 10 || *peers_out_max > 1000)
Throw<std::runtime_error>(
"Invalid value specified in [" SECTION_PEERS_OUT_MAX
"] section; the value must be in range 10-1000");
}
// if one section is configured then the other must be configured too
if ((peers_in_max && !peers_out_max) ||
(peers_out_max && !peers_in_max))
Throw<std::runtime_error>("Both sections [" SECTION_PEERS_IN_MAX
"]"
"and [" SECTION_PEERS_OUT_MAX
"] must be configured");
if (peers_in_max && peers_out_max)
{
PEERS_IN_MAX = *peers_in_max;
PEERS_OUT_MAX = *peers_out_max;
}
}
if (getSingleSection(secConfig, SECTION_NODE_SIZE, strTemp, j_))
{