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// Test handling of incoming ICMP packets.
// This test tests all known ICMP packet types, and a few unknown
// types.
// Establish a connection.
0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
0.000 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
0.000 bind(3, ..., ...) = 0
0.000 listen(3, 1) = 0
0.100 < S 0:0(0) win 32792 <mss 1460,nop,wscale 7>
0.100 > S. 0:0(0) ack 1 <mss 1460,nop,wscale 6>
0.200 < . 1:1(0) ack 1 win 257
0.200 accept(3, ..., ...) = 4
// Send 1 data segment.
0.200 write(4, ..., 1460) = 1460
0.200 > P. 1:1461(1460) ack 1
// We get lots of incoming ICMP messages.
// First the unreachable type and all its codes
0.300 < icmp unreachable net_unreachable
0.301 < icmp unreachable host_unreachable
0.302 < icmp unreachable protocol_unreachable
0.303 < icmp unreachable port_unreachable
0.304 < icmp unreachable frag_needed mtu 1234
0.305 < icmp unreachable source_route_failed
0.306 < icmp unreachable net_unknown
0.307 < icmp unreachable host_unknown
0.308 < icmp unreachable source_host_isolated
0.309 < icmp unreachable net_prohibited
0.310 < icmp unreachable host_prohibited
0.311 < icmp unreachable net_unreachable_for_tos
0.312 < icmp unreachable host_unreachable_for_tos
0.313 < icmp unreachable packet_filtered
0.314 < icmp unreachable precedence_violation
0.315 < icmp unreachable precedence_cutoff
// Then all the other types. These are legal because the code is optional.
0.400 < icmp echo_reply
0.401 < icmp source_quench
0.402 < icmp redirect
0.403 < icmp echo_request
0.404 < icmp time_exceeded
0.405 < icmp parameter_problem
0.406 < icmp timestamp_request
0.407 < icmp timestamp_reply
0.408 < icmp information_request
0.409 < icmp information_reply
0.410 < icmp address_mask_request
0.411 < icmp address_mask_reply
// Now try symbolic types with numeric codes.
0.450 < icmp unreachable code_0
0.451 < icmp unreachable code_1
0.452 < icmp unreachable code_255
// Now try numeric types with numeric codes
0.460 < icmp type_0 code_0
0.461 < icmp type_1 code_0
0.462 < icmp type_255 code_0
// Receiver ACKs all data.
0.470 < . 1:1(0) ack 1461 win 257
// Clean up.
0.600 close(4) = 0
0.600 > F. 1461:1461(0) ack 1
0.700 < F. 1:1(0) ack 1462 win 257
0.700 > . 1462:1462(0) ack 2
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