Bitcoin ABC
0.26.3
P2P Digital Currency
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src
seeder
test
dns_util.h
Go to the documentation of this file.
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// Copyright (c) 2020 The Bitcoin developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_SEEDER_TEST_DNS_UTIL_H
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#define BITCOIN_SEEDER_TEST_DNS_UTIL_H
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#include <string>
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#include <vector>
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static
const
uint8_t
END_OF_NAME_FIELD
= 0;
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// Builds the name field of the question section of a DNS query
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static
std::vector<uint8_t>
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CreateDNSQuestionNameField
(
const
std::string &
queryName
) {
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std::vector<uint8_t>
nameField
;
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size_t
i = 0;
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size_t
labelIndex
= 0;
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while
(i <
queryName
.size()) {
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if
(
queryName
[i] ==
'.'
) {
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// Push the length of the label and then the label
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nameField
.push_back(i -
labelIndex
);
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while
(
labelIndex
< i) {
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nameField
.push_back(
queryName
[
labelIndex
]);
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labelIndex
++;
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}
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labelIndex
= i + 1;
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}
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i++;
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}
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// Push the length of the label and then the label
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nameField
.push_back(i -
labelIndex
);
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while
(
labelIndex
< i) {
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nameField
.push_back(
queryName
[
labelIndex
]);
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labelIndex
++;
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}
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nameField
.push_back(
END_OF_NAME_FIELD
);
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return
nameField
;
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}
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#endif
// BITCOIN_SEEDER_TEST_DNS_UTIL_H
CreateDNSQuestionNameField
static std::vector< uint8_t > CreateDNSQuestionNameField(const std::string &queryName)
Definition
dns_util.h:15
END_OF_NAME_FIELD
static const uint8_t END_OF_NAME_FIELD
Definition
dns_util.h:11
GetRand
T GetRand(T nMax=std::numeric_limits< T >::max()) noexcept
Generate a uniform random integer of type T in the range [0..nMax) nMax defaults to std::numeric_limi...
Definition
random.h:85
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