Diff: Socket/TCPSocketConnection.cpp

Revision:

0:6ffb0aeb3972

Child:

1:8f04181f9ad8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Socket/TCPSocketConnection.cpp	Fri Aug 17 08:28:04 2012 +0000
@@ -0,0 +1,139 @@
+/* Copyright (C) 2012 mbed.org, MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "TCPSocketConnection.h"
+#include <algorithm>
+
+TCPSocketConnection::TCPSocketConnection() {}
+
+int TCPSocketConnection::connect(const char* host, const int port) {
+    //open the connection
+    char cmd[30];
+    char rcv[40];
+
+    // if we cannot enter in cmd mode, maybe we have a tcp connection opened.
+    // in this case we need to wait at least 0.25s to enter in cmd mode
+    if (!wifi->cmdMode()) {
+        wait(0.25);
+        if (!wifi->cmdMode()) {
+            wifi->send("\r", 1);
+            wait(0.1);
+            wifi->exit();
+            return -1;
+        }
+    }
+
+    sprintf(cmd, "open %s %d\r", host, port);
+    if (wifi->sendCommand(cmd, NULL, rcv)) {
+        if (strstr(rcv, "OPEN") == NULL) {
+            if (strstr(rcv, "Connected") != NULL) {
+                if (!wifi->sendCommand("close\r", "CLOS"))
+                    return -1;
+                if (!wifi->sendCommand(cmd, "OPEN"))
+                    return -1;
+            } else {
+                return -1;
+            }
+        }
+    } else {
+        return -1;
+    }
+
+    wifi->flush();
+    return 0;
+}
+
+bool TCPSocketConnection::is_connected(void) {
+    return wifi->is_connected();
+}
+
+int TCPSocketConnection::send(char* data, int length) {
+    Timer tmr;
+
+    if (!_blocking) {
+        tmr.start();
+        while (tmr.read_ms() < _timeout) {
+            if (wifi->writeable())
+                break;
+        }
+        if (tmr.read_ms() >= _timeout) {
+            return -1;
+        }
+    }
+    return wifi->send(data, length);
+}
+
+// -1 if unsuccessful, else number of bytes written
+int TCPSocketConnection::send_all(char* data, int length) {
+    Timer tmr;
+    int idx = 0;
+    tmr.start();
+
+    while ((tmr.read_ms() < _timeout) || _blocking) {
+
+        idx += wifi->send(data, length);
+        
+        if (idx == length)
+            return idx;
+    }
+    return (idx == 0) ? -1 : idx;
+}
+
+// -1 if unsuccessful, else number of bytes received
+int TCPSocketConnection::receive(char* data, int length) {
+    Timer tmr;
+
+    if (!_blocking) {
+        tmr.start();
+        while (tmr.read_ms() < _timeout) {
+            if (wifi->readable())
+                break;
+        }
+        if (tmr.read_ms() >= _timeout)
+            return -1;
+    }
+
+    while(!wifi->readable());
+    int nb_available = wifi->readable();
+    for (int i = 0; i < min(nb_available, length); i++) {
+        data[i] = wifi->getc();
+    }
+    return min(nb_available, length);
+}
+
+
+// -1 if unsuccessful, else number of bytes received
+int TCPSocketConnection::receive_all(char* data, int length) {
+    Timer tmr;
+    int idx = 0;
+    
+    tmr.start();
+
+    while (tmr.read_ms() < _timeout || _blocking) {
+    
+        int nb_available = wifi->readable();
+        for (int i = 0; i < min(nb_available, length); i++) {
+            data[idx++] = wifi->getc();
+        }
+        
+        if (idx == length)
+            return idx;
+    }
+
+    return (idx == 0) ? -1 : idx;
+}