#include "tcp.h"
#include <string.h>
+#define RX_HEADER \
+ size_t rxlen, ofs, len; \
+ char rxbuf[MTU]
+#define TEST_HEADER \
+ TEST_SETNAME(__func__);\
+ RX_HEADER
+
#define TEST_ASSERT_rx() TEST_ASSERT( rxlen = Net_Receive(0, sizeof(rxbuf), rxbuf, ERX_TIMEOUT) )
#define TEST_ASSERT_no_rx() TEST_ASSERT( Net_Receive(0, sizeof(rxbuf), rxbuf, NRX_TIMEOUT) == 0 )
+const int ERX_TIMEOUT = 1000; // Expect RX timeout (timeout=failure)
+const int NRX_TIMEOUT = 250; // Not expect RX timeout (timeout=success)
+const int RETX_TIMEOUT = 1000; // OS PARAM - Retransmit timeout
+const int LOST_TIMEOUT = 1000; // OS PARAM - Time before sending an ACK
+const int DACK_TIMEOUT = 500; // OS PARAM - Timeout for delayed ACKs
+const size_t DACK_BYTES = 4096; // OS PARAM - Threshold for delayed ACKs
bool Test_TCP_Basic(void)
{
- TEST_SETNAME(__func__);
- size_t rxlen, ofs, len;
- char rxbuf[MTU];
- const int ERX_TIMEOUT = 1000; // Expect RX timeout (timeout=failure)
- const int NRX_TIMEOUT = 250; // Not expect RX timeout (timeout=success)
- const int RETX_TIMEOUT = 1000; // OS PARAM - Retransmit timeout
- const int LOST_TIMEOUT = 1000; // OS PARAM - Time before sending an ACK
- const int DACK_TIMEOUT = 500; // OS PARAM - Timeout for delayed ACKs
- const size_t DACK_BYTES = 4096; // OS PARAM - Threshold for delayed ACKs
+ TEST_HEADER;
tTCPConn testconn = {
.IFNum = 0, .AF = 4,
.RSeq = 0,
};
- const char testblob[] = "HelloWorld, this is some random testing data for TCP\xFF\x00\x66\x12\x12";
+ const char testblob[] = "HelloWorld, this is some random testing data for TCP\xFF\x00\x66\x12\x12.";
const size_t testblob_len = sizeof(testblob);
-
+
+ // TODO: Check checksum failures
+
// 1. Test packets to closed port
// > RFC793 Pg.65
return true;
}
+bool Test_TCP_int_OpenConnection(tTCPConn *Conn)
+{
+ RX_HEADER;
+ // >> SYN
+ TCP_SendC(Conn, TCP_SYN, 0, NULL);
+ Conn->LSeq ++;
+ TEST_ASSERT_rx();
+ // << SYN|ACK (save remote sequence number)
+ TCP_SkipCheck_Seq(true);
+ TEST_ASSERT( TCP_Pkt_CheckC(rxlen, rxbuf, &ofs, &len, Conn, TCP_SYN|TCP_ACK) );
+ TEST_ASSERT_REL(len, ==, 0);
+ Conn->RSeq = TCP_Pkt_GetSeq(rxlen, rxbuf, Conn->AF) + 1;
+ // >> ACK
+ TCP_SendC(Conn, TCP_ACK, 0, NULL);
+ TEST_ASSERT_no_rx();
+ return true;
+}
+
+#if 0
bool Test_TCP_SYN_RECEIVED(void)
{
+ TEST_HEADER;
+
// 1. Get into SYN-RECEIVED
+ TCP_SendC(&testconn, TCP_SYN, 0, NULL);
// 2. Send various non-ACK packets
return false;
}
+#endif
+
+bool Test_TCP_Reset(void)
+{
+ TEST_HEADER;
+
+ tTCPConn testconn = {
+ .IFNum = 0,
+ .AF = 4,
+ .LAddr = BLOB(HOST_IP),
+ .RAddr = BLOB(TEST_IP),
+ .LPort = 44359,
+ .RPort = 9,
+ .LSeq = 0x600,
+ .RSeq = 0x600,
+ .Window = 128
+ };
+
+ Stack_SendCommand("tcp_echo_server %i", testconn.RPort);
+
+ // 1. Response in listen-based SYN-RECEIVED
+ // >> SYN
+ TCP_SendC(&testconn, TCP_SYN, 0, NULL);
+ testconn.LSeq ++;
+ // << SYN|ACK :: Now in SYN-RECEIVED
+ TEST_ASSERT_rx();
+ TCP_SkipCheck_Seq(true);
+ TEST_ASSERT( TCP_Pkt_CheckC(rxlen, rxbuf, &ofs, &len, &testconn, TCP_SYN|TCP_ACK) );
+ TEST_ASSERT_REL(len, ==, 0);
+ testconn.RSeq = TCP_Pkt_GetSeq(rxlen, rxbuf, testconn.AF) + 1;
+ // >> RST (not ACK)
+ TCP_SendC(&testconn, TCP_RST, 0, NULL);
+ // << nothing (connection should now be dead)
+ TEST_ASSERT_no_rx();
+ // >> ACK (this should be to a closed conneciton, see LISTEN[ACK] above)
+ TCP_SendC(&testconn, TCP_ACK, 0, NULL);
+ // << RST
+ TEST_ASSERT_rx();
+ TEST_ASSERT( TCP_Pkt_CheckC(rxlen, rxbuf, &ofs, &len, &testconn, TCP_RST) );
+ TEST_ASSERT_REL(len, ==, 0);
+
+ // 2. Response in open-based SYN-RECEIVED? (What is that?)
+ TEST_WARN("TODO: RFC793 pg70 mentions OPEN-based SYN-RECEIVED");
+
+ testconn.LPort += 1234;
+ // ESTABLISHED[RST] - RFC793:Pg70
+ // 2. Response in ESTABLISHED
+ TEST_ASSERT( Test_TCP_int_OpenConnection(&testconn) );
+ // >> RST
+ TCP_SendC(&testconn, TCP_RST, 0, NULL);
+ // << no response, connection closed
+ TEST_ASSERT_no_rx();
+ // >> ACK (LISTEN[ACK])
+ TCP_SendC(&testconn, TCP_ACK, 0, NULL);
+ // << RST
+ TEST_ASSERT_rx();
+ TEST_ASSERT( TCP_Pkt_CheckC(rxlen, rxbuf, &ofs, &len, &testconn, TCP_RST) );
+ TEST_ASSERT_REL(len, ==, 0);
+
+ return true;
+}
+
+bool Test_TCP_WindowSizes(void)
+{
+ TEST_HEADER;
+ tTCPConn testconn = {
+ .IFNum = 0,
+ .AF = 4,
+ .LAddr = BLOB(HOST_IP),
+ .RAddr = BLOB(TEST_IP),
+ .LPort = 44359,
+ .RPort = 9,
+ .LSeq = 0x600,
+ .RSeq = 0x600,
+ .Window = 128
+ };
+ char testdata[152];
+ memset(testdata, 0xAB, sizeof(testdata));
+
+ Stack_SendCommand("tcp_echo_server %i", testconn.RPort);
+ // > Open Connection
+ TEST_ASSERT( Test_TCP_int_OpenConnection(&testconn) );
+
+ // 1. Test remote respecting our transmission window (>=1 byte)
+ // > Send more data than our RX window
+ TCP_SendC(&testconn, TCP_PSH, sizeof(testdata), testdata);
+ testconn.LSeq += sizeof(testdata);
+ // Expect our RX window back
+ TEST_ASSERT_rx();
+ TEST_ASSERT( TCP_Pkt_CheckC(rxlen, rxbuf, &ofs, &len, &testconn, TCP_ACK|TCP_PSH) );
+ TEST_ASSERT_REL(len, ==, testconn.Window);
+ testconn.RSeq += len;
+ // > Send ACK and reduce window to 1 byte
+ testconn.Window = 1;
+ TCP_SendC(&testconn, TCP_ACK, 0, NULL);
+ testconn.LSeq += sizeof(testdata);
+ // > Expect 1 byte back
+ TEST_ASSERT_rx();
+ TEST_ASSERT( TCP_Pkt_CheckC(rxlen, rxbuf, &ofs, &len, &testconn, TCP_ACK|TCP_PSH) );
+ TEST_ASSERT_REL(len, ==, 1);
+ testconn.RSeq += len;
+ // 2. Test remote handling our window being 0 (should only send ACKs)
+ // 3. Test that remote drops data outside of its RX window
+ // 3.1. Ensure that data that wraps the end of the RX window is handled correctly
+ return false;
+}
git.ucc.asn.au / tpg / acess2.git / blobdiff
UCC git Repository :: git.ucc.asn.au