113 lines
4.5 KiB
C++
113 lines
4.5 KiB
C++
#include "sender_harness.hh"
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#include "tcp_config.hh"
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#include "wrapping_integers.hh"
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#include <cstdint>
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#include <cstdlib>
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#include <exception>
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#include <iostream>
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#include <optional>
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#include <stdexcept>
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#include <string>
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using namespace std;
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int main() {
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try {
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auto rd = get_random_generator();
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{
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TCPConfig cfg;
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WrappingInt32 isn(rd());
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cfg.fixed_isn = isn;
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TCPSenderTestHarness test{"FIN sent test", cfg};
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test.execute(ExpectSegment{}.with_no_flags().with_syn(true).with_payload_size(0).with_seqno(isn));
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test.execute(AckReceived{WrappingInt32{isn + 1}});
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test.execute(ExpectState{TCPSenderStateSummary::SYN_ACKED});
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test.execute(Close{});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_SENT});
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test.execute(ExpectBytesInFlight{1});
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test.execute(ExpectSegment{}.with_fin(true).with_seqno(isn + 1));
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test.execute(ExpectNoSegment{});
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}
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{
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TCPConfig cfg;
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WrappingInt32 isn(rd());
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cfg.fixed_isn = isn;
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TCPSenderTestHarness test{"FIN acked test", cfg};
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test.execute(ExpectSegment{}.with_no_flags().with_syn(true).with_payload_size(0).with_seqno(isn));
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test.execute(AckReceived{WrappingInt32{isn + 1}});
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test.execute(ExpectState{TCPSenderStateSummary::SYN_ACKED});
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test.execute(Close{});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_SENT});
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test.execute(ExpectSegment{}.with_fin(true).with_seqno(isn + 1));
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test.execute(AckReceived{WrappingInt32{isn + 2}});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_ACKED});
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test.execute(ExpectBytesInFlight{0});
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test.execute(ExpectNoSegment{});
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}
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{
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TCPConfig cfg;
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WrappingInt32 isn(rd());
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cfg.fixed_isn = isn;
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TCPSenderTestHarness test{"FIN not acked test", cfg};
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test.execute(ExpectSegment{}.with_no_flags().with_syn(true).with_payload_size(0).with_seqno(isn));
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test.execute(AckReceived{WrappingInt32{isn + 1}});
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test.execute(ExpectState{TCPSenderStateSummary::SYN_ACKED});
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test.execute(Close{});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_SENT});
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test.execute(ExpectSegment{}.with_fin(true).with_seqno(isn + 1));
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test.execute(AckReceived{WrappingInt32{isn + 1}});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_SENT});
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test.execute(ExpectBytesInFlight{1});
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test.execute(ExpectNoSegment{});
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}
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{
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TCPConfig cfg;
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WrappingInt32 isn(rd());
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cfg.fixed_isn = isn;
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TCPSenderTestHarness test{"FIN retx test", cfg};
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test.execute(ExpectSegment{}.with_no_flags().with_syn(true).with_payload_size(0).with_seqno(isn));
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test.execute(AckReceived{WrappingInt32{isn + 1}});
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test.execute(ExpectState{TCPSenderStateSummary::SYN_ACKED});
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test.execute(Close{});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_SENT});
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test.execute(ExpectSegment{}.with_fin(true).with_seqno(isn + 1));
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test.execute(AckReceived{WrappingInt32{isn + 1}});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_SENT});
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test.execute(ExpectBytesInFlight{1});
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test.execute(ExpectNoSegment{});
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test.execute(Tick{TCPConfig::TIMEOUT_DFLT - 1});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_SENT});
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test.execute(ExpectBytesInFlight{1});
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test.execute(ExpectNoSegment{});
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test.execute(Tick{1});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_SENT});
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test.execute(ExpectBytesInFlight{1});
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test.execute(ExpectSegment{}.with_fin(true).with_seqno(isn + 1));
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test.execute(ExpectNoSegment{});
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test.execute(Tick{1});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_SENT});
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test.execute(ExpectBytesInFlight{1});
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test.execute(ExpectNoSegment{});
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test.execute(AckReceived{WrappingInt32{isn + 2}});
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test.execute(ExpectState{TCPSenderStateSummary::FIN_ACKED});
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test.execute(ExpectBytesInFlight{0});
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test.execute(ExpectNoSegment{});
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}
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} catch (const exception &e) {
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cerr << e.what() << endl;
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return 1;
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}
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return EXIT_SUCCESS;
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}
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