ssl_client2: add max_frag_len option
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index 036cc67..63c1b66 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -57,6 +57,7 @@
 #define DFL_MIN_VERSION         -1
 #define DFL_MAX_VERSION         -1
 #define DFL_AUTH_MODE           SSL_VERIFY_OPTIONAL
+#define DFL_MFL_CODE            SSL_MAX_FRAG_LEN_NONE
 
 #define GET_REQUEST "GET %s HTTP/1.0\r\n\r\n"
 
@@ -81,6 +82,7 @@
     int min_version;            /* minimum protocol version accepted        */
     int max_version;            /* maximum protocol version accepted        */
     int auth_mode;              /* verify mode for connection               */
+    unsigned char mfl_code;     /* code for maximum fragment length         */
 } opt;
 
 static void my_debug( void *ctx, int level, const char *str )
@@ -176,6 +178,8 @@
     "                        options: ssl3, tls1, tls1_1, tls1_2\n" \
     "    auth_mode=%%s        default: \"optional\"\n"          \
     "                        options: none, optional, required\n" \
+    "    max_frag_len=%%d     default: 16384 (tls default)" \
+    "                        options: 512, 1024, 2048, 4096" \
     USAGE_PSK                                               \
     "\n"                                                    \
     "    force_ciphersuite=<name>    default: all enabled\n"\
@@ -265,6 +269,7 @@
     opt.min_version         = DFL_MIN_VERSION;
     opt.max_version         = DFL_MAX_VERSION;
     opt.auth_mode           = DFL_AUTH_MODE;
+    opt.mfl_code            = DFL_MFL_CODE;
 
     for( i = 1; i < argc; i++ )
     {
@@ -387,6 +392,19 @@
             else
                 goto usage;
         }
+        else if( strcmp( p, "max_frag_len" ) == 0 )
+        {
+            if( strcmp( q, "512" ) == 0 )
+                opt.mfl_code = SSL_MAX_FRAG_LEN_512;
+            else if( strcmp( q, "1024" ) == 0 )
+                opt.mfl_code = SSL_MAX_FRAG_LEN_1024;
+            else if( strcmp( q, "2048" ) == 0 )
+                opt.mfl_code = SSL_MAX_FRAG_LEN_2048;
+            else if( strcmp( q, "4096" ) == 0 )
+                opt.mfl_code = SSL_MAX_FRAG_LEN_4096;
+            else
+                goto usage;
+        }
         else
             goto usage;
     }
@@ -592,6 +610,8 @@
     ssl_set_endpoint( &ssl, SSL_IS_CLIENT );
     ssl_set_authmode( &ssl, opt.auth_mode );
 
+    ssl_set_max_frag_len( &ssl, opt.mfl_code );
+
     ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg );
     ssl_set_dbg( &ssl, my_debug, stdout );
     ssl_set_bio( &ssl, net_recv, &server_fd,