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Check file handle limit on startup (RIPD-442, RIPD-1024):

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Calculate the number of file descriptors that are needed during
execution based on the configuration file, with a hard floor
of 1024, adjusting the limit if possible. Refuse to run if enough
fds are not available.

Additionally, allow administrators to limit the number of incoming
connections a configured port will accept. By default no limit is
imposed.
This commit is contained in:
Nik Bougalis
2016-04-08 09:39:09 -07:00
parent 79ca82c078
commit 47eb4da080
25 changed files with 265 additions and 88 deletions
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43
src/ripple/server/impl/Port.cpp
View File

@@ -19,9 +19,10 @@
#include <ripple/server/Port.h>
#include <beast/http/rfc2616.h>
#include <beast/module/core/text/LexicalCast.h>
namespace ripple {
bool
Port::websockets() const
{
@@ -159,20 +160,22 @@ parse_Port (ParsedPort& port, Section const& section, std::ostream& log)
auto const result = section.find("port");
if (result.second)
{
auto const ul = std::stoul(result.first);
if (ul > std::numeric_limits<std::uint16_t>::max())
try
{
log << "Value '" << result.first
<< "' for key 'port' is out of range\n";
Throw<std::exception> ();
port.port =
beast::lexicalCastThrow<std::uint16_t>(result.first);
// Port 0 is not supported
if (*port.port == 0)
Throw<std::exception> ();
}
if (ul == 0)
catch (std::exception const& ex)
{
log <<
"Value '0' for key 'port' is invalid\n";
Throw<std::exception> ();
"Invalid value '" << result.first << "' for key " <<
"'port' in [" << section.name() << "]\n";
Throw();
}
port.port = static_cast<std::uint16_t>(ul);
}
}
@@ -186,6 +189,26 @@ parse_Port (ParsedPort& port, Section const& section, std::ostream& log)
}
}
{
auto const lim = get (section, "limit", "unlimited");
if (!beast::ci_equal (lim, "unlimited"))
{
try
{
port.limit = static_cast<int> (
beast::lexicalCastThrow<std::uint16_t>(lim));
}
catch (std::exception const& ex)
{
log <<
"Invalid value '" << lim << "' for key " <<
"'limit' in [" << section.name() << "]\n";
Throw();
}
}
}
populate (section, "admin", log, port.admin_ip, true, {});
populate (section, "secure_gateway", log, port.secure_gateway_ip, false,
port.admin_ip.get_value_or({}));