From fe4ca175a1fdb775ba1be9c4308a789abeb09eeb Mon Sep 17 00:00:00 2001
From: zDimaBY <zdimaby@gmail.com>
Date: Fri, 8 Jul 2022 23:26:50 +0300
Subject: [PATCH] Added connection to the server using TCP/IP.

---
 src/GSMSimGPRS.cpp | 74 +++++++++++++++++++++++++++++++++-------------
 src/GSMSimGPRS.h   | 24 ++++++++++++---
 2 files changed, 74 insertions(+), 24 deletions(-)

diff --git a/src/GSMSimGPRS.cpp b/src/GSMSimGPRS.cpp
index 82d47cc..30cee0f 100644
--- a/src/GSMSimGPRS.cpp
+++ b/src/GSMSimGPRS.cpp
@@ -46,11 +46,15 @@ void GSMSimGPRS::gprsInit(String apn, String user, String password) {
 	USER = user;
 	PWD = password;
 }
+void GSMSimGPRS::gprsInitServer(String server, String port) {
+	SERVER = server;
+	PORT = port;
+}
+
 // Connect to GPRS Bearer
 bool GSMSimGPRS::connect() {
 	gsm.print(F("AT+SAPBR=3,1,\"CONTYPE\",\"GPRS\"\r"));
 	_readSerial();
-
 	if (_buffer.indexOf(F("OK")) != -1) {
 		gsm.print(F("AT+SAPBR=3,1,\"APN\",\""));
 		gsm.print(APN);
@@ -74,28 +78,38 @@ bool GSMSimGPRS::connect() {
 						_readSerial();
 						if (_buffer.indexOf(F("\"0.0.0.0\"")) == -1 || _buffer.indexOf(F("ERR")) == -1) {
 							return true;
-						}
-						else {
+						} else {
 							return false;
 						}
-					}
-					else {
+					} else {
 						return false;
 					}
-				}
-				else {
+				} else {
 					return false;
 				}
-			}
-			else {
+			} else {
 				return false;
 			}
-		}
-		else {
+		} else {
 			return false;
 		}
+	} else {
+		return false;
 	}
-	else {
+}
+bool GSMSimGPRS::gprsSend() { //Dont work. should be 5 packets per second. As far as I understand.
+	gsm.print(F("AT+CIPSEND\r"));
+	_readSerial();
+	if (_buffer.indexOf(F(">")) != -1) {
+		gsm.print(F("99:88:77:66:55:44:33:22:00:88:77:66:55:44:33:22:11"));
+		gsm.print(F("\n\x1A\r"));
+		_readSerial();
+		if (_buffer.indexOf(F("SEND OK")) != -1) {
+			return true;
+		} else {
+			return true;
+		}
+	} else {
 		return false;
 	}
 }
@@ -105,8 +119,7 @@ bool GSMSimGPRS::isConnected() {
 	_readSerial();
 	if (_buffer.indexOf(F("ERROR")) != -1 || _buffer.indexOf(F("\"0.0.0.0\"")) != -1) {
 		return false;
-	}
-	else {
+	} else {
 		return true;
 	}
 }
@@ -116,26 +129,47 @@ String GSMSimGPRS::getIP() {
 	_readSerial();
 	if (_buffer.indexOf(F("ERROR")) != -1 || _buffer.indexOf(F("\"0.0.0.0\"")) != -1) {
 		return "ERROR:NO_IP";
-	}
-	else {
+	} else {
 		if (_buffer.indexOf("+SAPBR:") != -1) {
 			String veri = _buffer.substring(_buffer.indexOf(F(",\""))+2, _buffer.lastIndexOf(F("\"")));
 			veri.trim();
 			return veri;
-		}
-		else {
+		} else {
 			"ERROR:NO_IP_FETCH";
 		}
 	}
 }
+// Specify the address and port of the server
+bool GSMSimGPRS::gprsServerConn() {
+	gsm.print(F("AT+CIPSTART=\"TCP\",\""));
+	gsm.print(SERVER);
+	gsm.print(F("\",\""));
+	gsm.print(PORT);
+	gsm.print(F("\"\r"));
+	_readSerial();
+	if (_buffer.indexOf(F("CONNECT OK")) != -1) {
+		return true;
+	} else {
+		return false;
+	}
+}
+// Context deactivation
+bool GSMSimGPRS::closeContext() {
+	gsm.print(F("AT+CIPSHUT\r"));
+	_readSerial();
+	if (_buffer.indexOf(F("SHUT OK")) != -1) {
+		return true;
+	} else {
+		return false;
+	}
+}
 // Close GPRS Connection
 bool GSMSimGPRS::closeConn() {
 	gsm.print(F("AT+SAPBR=0,1\r"));
 	_readSerial();
 	if (_buffer.indexOf(F("OK")) != -1) {
 		return true;
-	}
-	else {
+	} else {
 		return false;
 	}
 }
\ No newline at end of file
diff --git a/src/GSMSimGPRS.h b/src/GSMSimGPRS.h
index 0a78ab5..c22d9dc 100644
--- a/src/GSMSimGPRS.h
+++ b/src/GSMSimGPRS.h
@@ -47,6 +47,8 @@
 #define DEFAULT_GPRS_APN    "internet"
 #define DEFAULT_GPRS_USER   ""
 #define DEFAULT_GPRS_PWD    ""
+#define DEFAULT_GPRS_SERVER   ""
+#define DEFAULT_GPRS_PORT    ""
 
 
 class GSMSimGPRS : public GSMSim {
@@ -55,11 +57,13 @@ class GSMSimGPRS : public GSMSim {
     String APN;
     String USER;
     String PWD;
+    String SERVER;
+    String PORT;
 
 
   public :
 
-    // Sınıfı Başlatıcı...
+    // Class Initializer...
     GSMSimGPRS(Stream& s) : GSMSim(s) {
       RESET_PIN = DEFAULT_RST_PIN;
       LED_PIN = DEFAULT_LED_PIN;
@@ -68,6 +72,9 @@ class GSMSimGPRS : public GSMSim {
       APN = DEFAULT_GPRS_APN;
       USER = DEFAULT_GPRS_USER;
       PWD = DEFAULT_GPRS_PWD;
+
+      SERVER = DEFAULT_GPRS_SERVER;
+      PORT = DEFAULT_GPRS_PORT;
     }
 
     GSMSimGPRS(Stream& s, unsigned int resetPin) : GSMSim(s, resetPin) {
@@ -79,6 +86,9 @@ class GSMSimGPRS : public GSMSim {
       APN = DEFAULT_GPRS_APN;
       USER = DEFAULT_GPRS_USER;
       PWD = DEFAULT_GPRS_PWD;
+
+      SERVER = DEFAULT_GPRS_SERVER;
+      PORT = DEFAULT_GPRS_PORT;
     }
 
     GSMSimGPRS(Stream& s, unsigned int resetPin, unsigned int ledPin, bool ledFlag) : GSMSim(s, resetPin, ledPin, ledFlag) {
@@ -90,21 +100,27 @@ class GSMSimGPRS : public GSMSim {
       APN = DEFAULT_GPRS_APN;
       USER = DEFAULT_GPRS_USER;
       PWD = DEFAULT_GPRS_PWD;
+
+      SERVER = DEFAULT_GPRS_SERVER;
+      PORT = DEFAULT_GPRS_PORT;
     }
 
     void gprsInit(String apn);
     void gprsInit(String apn, String user, String password);
-    
+    void gprsInitServer(String server, String port);
     // Connect to Bearer
     bool connect();
-
+    // Connect to server
+    bool gprsServerConn();
+    // Send to server
+    bool gprsSend();//Dont work. should be 5 packets per second. As far as I understand.
     // Check connection
     bool isConnected();
     // get ip address
     String getIP();
     // close gprs bearer connection
+    bool closeContext();
     bool closeConn();
 
 };
-
 #endif