Fixes findings from Greentea netsocket TCP test cases

TESTS/netsocket/tcp/main.cpp

@@ -29,18 +29,17 @@
 
 using namespace utest::v1;
 
-#ifndef MBED_CFG_TCP_CLIENT_ECHO_TIMEOUT
-#define MBED_CFG_TCP_CLIENT_ECHO_TIMEOUT 500 //[ms]
-#endif
-
-static NetworkInterface* net;
+namespace
+{
+    NetworkInterface* net;
+}
 
 NetworkInterface* get_interface()
 {
     return net;
 }
 
-void drop_bad_packets(TCPSocket& sock) {
+void drop_bad_packets(TCPSocket& sock, int orig_timeout) {
     nsapi_error_t err;
     sock.set_timeout(0);
     while (true) {
@@ -49,7 +48,7 @@ void drop_bad_packets(TCPSocket& sock) {
             break;
         }
     }
-    sock.set_timeout(MBED_CFG_TCP_CLIENT_ECHO_TIMEOUT);
+    sock.set_timeout(orig_timeout);
 }
 
 static void _ifup() {

TESTS/netsocket/tcp/tcp_tests.h

@@ -19,7 +19,7 @@
 #define TCP_TESTS_H
 
 NetworkInterface* get_interface();
-void drop_bad_packets(TCPSocket& sock);
+void drop_bad_packets(TCPSocket& sock, int orig_timeout);
 void fill_tx_buffer_ascii(char *buff, size_t len);
 void tcpsocket_connect_to_echo_srv(TCPSocket& sock);
 void tcpsocket_connect_to_discard_srv(TCPSocket& sock);

TESTS/netsocket/tcp/tcpsocket_echotest.cpp

@@ -65,10 +65,7 @@ void TCPSOCKET_ECHOTEST()
         int bytes2recv = sent;
         while (bytes2recv) {
             recvd = sock.recv(&(rx_buffer[sent-bytes2recv]), bytes2recv);
-            if (recvd == NSAPI_ERROR_WOULD_BLOCK) {
-                TEST_ASSERT_NOT_EQUAL(osEventTimeout, osSignalWait(SIGNAL_SIGIO, SIGIO_TIMEOUT).status);
-                continue;
-            } else if (recvd <= 0) {
+                if (recvd < 0) {
                 printf("[Round#%02d] network error %d\n", x, recvd);
                 TEST_FAIL();
             }

TESTS/netsocket/tcp/tcpsocket_echotest_burst.cpp

@@ -23,11 +23,13 @@
 #include "utest.h"
 #include "tcp_tests.h"
 
-#define SIGNAL_SIGIO 0x1
-#define SIGIO_TIMEOUT 5000 //[ms]
+using namespace utest::v1;
 
 namespace
 {
+    static const int SIGNAL_SIGIO = 0x1;
+    static const int SIGIO_TIMEOUT = 5000; //[ms]
+
     static const int BURST_CNT = 100;
     static const int BURST_SIZE = 1220;
     char rx_buffer[BURST_SIZE] = {0};
@@ -77,7 +79,7 @@ void TCPSOCKET_ECHOTEST_BURST()
         }
 
         if (bt_left != 0) {
-            drop_bad_packets(sock);
+            drop_bad_packets(sock, 0);
             TEST_FAIL();
         }
 
@@ -134,7 +136,7 @@ void TCPSOCKET_ECHOTEST_BURST_NONBLOCK()
 
         if (bt_left != 0) {
             printf("network error %d, missing %d bytes from a burst\n", recvd, bt_left);
-            drop_bad_packets(sock);
+            drop_bad_packets(sock, -1);
             TEST_FAIL();
         }
 

TESTS/netsocket/tcp/tcpsocket_open_close_repeat.cpp

@@ -23,6 +23,8 @@
 #include "unity/unity.h"
 #include "utest.h"
 
+using namespace utest::v1;
+
 void TCPSOCKET_OPEN_CLOSE_REPEAT()
 {
     TCPSocket *sock = new TCPSocket;

TESTS/netsocket/tcp/tcpsocket_recv_100k.cpp

@@ -25,8 +25,11 @@
 
 using namespace utest::v1;
 
-#define SIGNAL_SIGIO 0x1
-#define SIGIO_TIMEOUT 20000 //[ms]
+namespace
+{
+    static const int SIGNAL_SIGIO = 0x1;
+    static const int SIGIO_TIMEOUT = 20000; //[ms]
+}
 
 static void _tcpsocket_connect_to_chargen_srv(TCPSocket& sock) {
     SocketAddress tcp_addr;

TESTS/netsocket/tcp/tcpsocket_recv_timeout.cpp

@@ -23,8 +23,13 @@
 #include "utest.h"
 #include "tcp_tests.h"
 
-#define SIGNAL_SIGIO 0x1
-#define SIGIO_TIMEOUT 5000 //[ms]
+using namespace utest::v1;
+
+namespace
+{
+    static const int SIGNAL_SIGIO = 0x1;
+    static const int SIGIO_TIMEOUT = 5000; //[ms]
+}
 
 static void _sigio_handler(osThreadId id) {
     osSignalSet(id, SIGNAL_SIGIO);
@@ -58,7 +63,7 @@ void TCPSOCKET_RECV_TIMEOUT()
                     TEST_FAIL();
                 }
                 printf("MBED: recv() took: %dms\n", timer.read_ms());
-                TEST_ASSERT_INT_WITHIN(50, (100+200)/2, timer.read_ms());
+                TEST_ASSERT_INT_WITHIN(50, 150, timer.read_ms());
                 continue;
             } else if (recvd < 0) {
                 printf("[pkt#%02d] network error %d\n", i, recvd);

TESTS/netsocket/tcp/tcpsocket_thread_per_socket_safety.cpp

@@ -25,12 +25,15 @@
 
 using namespace utest::v1;
 
-#define SIGNAL_SIGIO1 0x1
-#define SIGNAL_SIGIO2 0x2
-#define SIGIO_TIMEOUT 5000 //[ms]
+namespace
+{
+    static const int SIGNAL_SIGIO1 = 0x1;
+    static const int SIGNAL_SIGIO2 = 0x2;
+    static const int SIGIO_TIMEOUT = 5000; //[ms]
 
-Thread thread;
-static volatile bool running = true;
+    Thread thread;
+    volatile bool running = true;
+}
 
 static void _sigio_handler1(osThreadId id) {
     osSignalSet(id, SIGNAL_SIGIO1);
@@ -84,7 +87,7 @@ static void check_const_len_rand_sequence()
         }
 
         if (bytes2process != 0) {
-            drop_bad_packets(sock);
+            drop_bad_packets(sock, 0);
             TEST_FAIL();
         }
         TEST_ASSERT_EQUAL(0, memcmp(tx_buff, rx_buff, BUFF_SIZE));
@@ -136,7 +139,7 @@ static void check_var_len_rand_sequence()
         }
 
         if (bytes2process != 0) {
-            drop_bad_packets(sock);
+            drop_bad_packets(sock, 0);
             TEST_FAIL();
         }
         TEST_ASSERT_EQUAL(0, memcmp(tx_buff, rx_buff, i));