ssl_test_lib: move common includes

Move from ssl_*2.c to ssl_test_lib.h:
* Include directives for headers included by both programs.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index df97ada..a72d4dc 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -33,32 +33,6 @@
 }
 #else
 
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-#include "mbedtls/memory_buffer_alloc.h"
-#endif
-
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-#include "mbedtls/certs.h"
-#include "mbedtls/x509.h"
-#include "mbedtls/error.h"
-#include "mbedtls/debug.h"
-#include "mbedtls/timing.h"
-#include "mbedtls/base64.h"
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-#include "psa/crypto.h"
-#include "mbedtls/psa_util.h"
-#endif
-
-#include <test/helpers.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
 /* Size of memory to be allocated for the heap, when using the library's memory
  * management and MBEDTLS_MEMORY_BUFFER_ALLOC_C is enabled. */
 #define MEMORY_HEAP_SIZE      120000
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index f14944b..c404f2e 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -33,27 +33,6 @@
 }
 #else
 
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-#include "mbedtls/certs.h"
-#include "mbedtls/x509.h"
-#include "mbedtls/error.h"
-#include "mbedtls/debug.h"
-#include "mbedtls/timing.h"
-#include "mbedtls/base64.h"
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-#include "psa/crypto.h"
-#include "mbedtls/psa_util.h"
-#endif
-
-#include <test/helpers.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 #include <stdint.h>
 
 #if !defined(_MSC_VER)
@@ -76,10 +55,6 @@
 #include "mbedtls/ssl_cookie.h"
 #endif
 
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-#include "mbedtls/memory_buffer_alloc.h"
-#endif
-
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) && defined(MBEDTLS_FS_IO)
 #define SNI_OPTION
 #endif
diff --git a/programs/ssl/ssl_test_lib.h b/programs/ssl/ssl_test_lib.h
index c5783de..83f7858 100644
--- a/programs/ssl/ssl_test_lib.h
+++ b/programs/ssl/ssl_test_lib.h
@@ -56,6 +56,33 @@
     "and/or MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER defined.\n"
 #else
 #undef MBEDTLS_SSL_TEST_IMPOSSIBLE
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "mbedtls/net_sockets.h"
+#include "mbedtls/ssl.h"
+#include "mbedtls/entropy.h"
+#include "mbedtls/ctr_drbg.h"
+#include "mbedtls/certs.h"
+#include "mbedtls/x509.h"
+#include "mbedtls/error.h"
+#include "mbedtls/debug.h"
+#include "mbedtls/timing.h"
+#include "mbedtls/base64.h"
+
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+#include "psa/crypto.h"
+#include "mbedtls/psa_util.h"
 #endif
 
+#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
+#include "mbedtls/memory_buffer_alloc.h"
+#endif
+
+#include <test/helpers.h>
+
+#endif /* MBEDTLS_SSL_TEST_IMPOSSIBLE conditions: else */
+
 #endif /* MBEDTLS_PROGRAMS_SSL_SSL_TEST_LIB_H */