Diff: ESP8266InterfaceTiny/Socket/TCPSocketConnection.cpp

Revision:

0:890c12951e96

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ESP8266InterfaceTiny/Socket/TCPSocketConnection.cpp	Sun Nov 15 13:36:44 2015 +0000
@@ -0,0 +1,246 @@
+/* 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 <cstring>
+#include <algorithm>
+
+using std::memset;
+using std::memcpy;
+
+//Debug is disabled by default
+#if 1
+#define DBG(x, ...)  printf("[TCPConnection : DBG]"x" \t[%s,%d]\r\n", ##__VA_ARGS__,__FILE__,__LINE__); 
+#define WARN(x, ...) printf("[TCPConnection: WARN]"x" \t[%s,%d]\r\n", ##__VA_ARGS__,__FILE__,__LINE__); 
+#define ERR(x, ...)  printf("[TCPConnection : ERR]"x" \t[%s,%d]\r\n", ##__VA_ARGS__,__FILE__,__LINE__); 
+#else
+#define DBG(x, ...)
+#define WARN(x, ...)
+#define ERR(x, ...)
+#endif
+
+TCPSocketConnection::TCPSocketConnection() :
+    _is_connected(false)
+{
+}
+
+int TCPSocketConnection::connect(const char* host, const int port)
+{
+//    if (init_socket(SOCK_STREAM) < 0)
+//        return -1;
+//
+    if (set_address(host, port) != 0)
+        return -1;
+//
+//    if (lwip_connect(_sock_fd, (const struct sockaddr *) &_remoteHost, sizeof(_remoteHost)) < 0) {
+//        close();
+//        return -1;
+//    }
+//    _is_connected = true;
+
+    _is_connected = ESP8266->start(ESP_TCP_TYPE,_ipAddress,_port);
+    if(_is_connected) { //success
+        return 0;
+    } else { // fail
+        return -1;
+    }
+}
+
+bool TCPSocketConnection::is_connected(void)
+{
+    return _is_connected;
+}
+
+int TCPSocketConnection::send(char* data, int length)
+{
+    if (!_is_connected) {
+        ERR("TCPSocketConnection::receive() - _is_connected is false : you cant receive data until you connect to a socket!");
+        return -1;
+    }
+    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;
+
+    //return wifi->send(data,length);
+//
+//    if (!_blocking) {
+//        TimeInterval timeout(_timeout);
+//        if (wait_writable(timeout) != 0)
+//            return -1;
+//    }
+//
+//    int n = lwip_send(_sock_fd, data, length, 0);
+//    _is_connected = (n != 0);
+//
+//    return n;
+
+}
+
+// -1 if unsuccessful, else number of bytes written
+int TCPSocketConnection::send_all(char* data, int length)
+{
+//   if ((_sock_fd < 0) || !_is_connected)
+//        return -1;
+//
+//    int writtenLen = 0;
+//    TimeInterval timeout(_timeout);
+//    while (writtenLen < length) {
+//        if (!_blocking) {
+//            // Wait for socket to be writeable
+//            if (wait_writable(timeout) != 0)
+//                return writtenLen;
+//        }
+//
+//        int ret = lwip_send(_sock_fd, data + writtenLen, length - writtenLen, 0);
+//        if (ret > 0) {
+//            writtenLen += ret;
+//            continue;
+//        } else if (ret == 0) {
+//            _is_connected = false;
+//            return writtenLen;
+//        } else {
+//            return -1; //Connnection error
+//        }
+//    }
+//    return writtenLen;
+    return send(data,length); // just remap to send
+}
+
+int TCPSocketConnection::receive(char* buffer, int length)
+{
+    if (!_is_connected) {
+        ERR("TCPSocketConnection::receive() - _is_connected is false : you cant receive data until you connect to a socket!");
+        return -1;
+    }
+    Timer tmr;
+    int idx = 0;
+    int nb_available = 0;
+    int time = -1;
+
+    //make this the non-blocking case and return if <= 0
+    // remember to change the config to blocking
+    // if ( ! _blocking) {
+    // if ( wifi.readable <= 0 ) {
+    // return (wifi.readable);
+    // }
+    // }
+    //---
+    tmr.start();
+    if (_blocking) {
+        while (1) {
+            nb_available = wifi->readable();
+            if (nb_available != 0) {
+                break;
+            }
+        }
+    }
+    //---
+    // blocking case
+    else {
+        tmr.reset();
+
+        while (time < _timeout) {
+            nb_available = wifi->readable();
+            if (nb_available < 0) return nb_available;
+            if (nb_available > 0) break ;
+            time = tmr.read_ms();
+        }
+
+        if (nb_available == 0) return nb_available;
+    }
+
+    // change this to < 20 mS timeout per byte to detect end of packet gap
+    // this may not work due to buffering at the UART interface
+    tmr.reset();
+    // while ( tmr.read_ms() < 20 ) {
+    // if ( wifi.readable() && (idx < length) ) {
+    // buffer[idx++] = wifi->getc();
+    // tmr.reset();
+    // }
+    // if ( idx == length ) {
+    // break;
+    // }
+    // }
+    //---
+    while (time < _timeout) {
+
+        nb_available = wifi->readable();
+        //for (int i = 0; i < min(nb_available, length); i++) {
+        for (int i = 0; i < min(nb_available, (length-idx)); i++) {
+            buffer[idx] = wifi->getc();
+            idx++;
+        }
+        if (idx == length) {
+            break;
+        }
+        time = tmr.read_ms();
+    }
+    //---
+    return (idx == 0) ? -1 : idx;
+
+//************************ original code below
+//
+//    if (!_blocking) {
+//        TimeInterval timeout(_timeout);
+//        if (wait_readable(timeout) != 0)
+//            return -1;
+//    }
+//
+//    int n = lwip_recv(_sock_fd, data, length, 0);
+//    _is_connected = (n != 0);
+//
+//    return n;
+
+}
+
+// -1 if unsuccessful, else number of bytes received
+int TCPSocketConnection::receive_all(char* data, int length)
+{
+    //ERR("receive_all() not yet implimented");
+    //  if ((_sock_fd < 0) || !_is_connected)
+//        return -1;
+//
+//    int readLen = 0;
+//    TimeInterval timeout(_timeout);
+//    while (readLen < length) {
+//        if (!_blocking) {
+//            //Wait for socket to be readable
+//            if (wait_readable(timeout) != 0)
+//                return readLen;
+//        }
+//
+//        int ret = lwip_recv(_sock_fd, data + readLen, length - readLen, 0);
+//        if (ret > 0) {
+//            readLen += ret;
+//        } else if (ret == 0) {
+//            _is_connected = false;
+//            return readLen;
+//        } else {
+//            return -1; //Connnection error
+//        }
+//    }
+//    return readLen;
+    receive(data,length);
+}