first commit

RPi_rflink/server.cpp

@@ -0,0 +1,126 @@
+#include "server.h"
+#include <iostream>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <string>
+
+#include <pthread.h>
+
+#include "Base.h" // define extern int threadScanEvent_id; 
+#include "RawSignal.h" // define extern bool endRawSignal; 
+
+#define BUFSIZE 1000
+
+int clientSocket=-1; // if of client socket
+
+
+int socket_getline(char* buf, int size)
+{
+	int i=0;
+	for (i=0; i<size; i++) {
+		if ( recv(clientSocket, buf+i, 1, 0) <= 0){
+			clientSocket=-1;
+			Serial.set_send_function(NULL); // disable Serial.println send line by socket
+			log(LOG_ERROR,"TCP server: Problem with receivere data.");
+			return -1;
+		}
+		if ( buf[i]=='\r'){ // ignor
+			buf[i]=0x00;
+			i--;
+		}
+		if ( buf[i]=='\r' or buf[i]=='\n') {
+			buf[i]=0x00;
+			return i;
+		}
+	}
+}
+
+int socket_send(const char* buf, const int size)
+{
+	log(LOG_DEBUG,"TCP server send: ",false);
+	log(LOG_DEBUG,buf);
+	int ret=send(clientSocket, buf, size, 0);
+	if ( ret == -1 ) {  // +1 for NUL terminator
+		clientSocket=-1;
+		Serial.set_send_function(NULL); // disable Serial.println send line by socket = disable this function
+		log(LOG_ERROR,"TCP server: Problem send data.");
+	}
+	return ret;
+}
+
+int TCPserver(int port)
+{
+	log(LOG_STATUS,"TCP server: START.");
+	sockaddr_in sockName;         // "name" of port
+	sockaddr_in clientInfo;       // client who connected
+	int mainSocket;               // Soket
+	char buf[BUFSIZE];            // Přijímací buffer
+	char inBuf[BUFSIZE];            // Input buffer
+	int size;                     // count of sender or receivered bytes
+	socklen_t addrlen;            // size remote addres
+
+	// Create main socket
+	if ((mainSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
+	{
+		log(LOG_ERROR,"TCP server: Main socket can't be created.");
+		return -1;
+	}
+	sockName.sin_family = AF_INET;
+	sockName.sin_port = htons(port);
+	sockName.sin_addr.s_addr = INADDR_ANY; //allow connect from anywhere
+	if (bind(mainSocket, (sockaddr *)&sockName, sizeof(sockName)) == -1) // add name to scoket
+	{
+		log(LOG_ERROR,"TCP server: Problem add name to socket.");
+		return -1;
+	}
+	if (listen(mainSocket, 10) == -1) // create reguest queue  (max 10)
+	{
+		log(LOG_ERROR,"TCP server: Problem create reguest queue.");
+		return -1;
+	}
+	do
+	{
+		sprintf(pbuffer,"TCP server: Wait for next connection on port: %d .",port);
+		log(LOG_STATUS, pbuffer);
+		addrlen = sizeof(clientInfo); //size struct clienInfo for function accept
+		clientSocket = accept(mainSocket, (sockaddr*)&clientInfo, &addrlen); // accpet one connection from queue, client is new soccket join clinet with server
+		int totalSize = 0;
+		if (clientSocket == -1)
+		{
+			log(LOG_ERROR,"TCP server: Problem conect with client.");
+			return -1;
+		}
+		log(LOG_STATUS,"TCP server: Client connect.");
+		// --------------------- conction is stored now can work -----------------------------
+		Serial.set_send_function(socket_send); // enable Serial.println send line by socket
+		Serial.print(WELCOME);
+		sprintf(inBuf,"R%02x;",REVNR);
+		Serial.println(inBuf); 
+		StartScanEventTheader(); // create separate thread
+		while( clientSocket!=-1 ){ // enableRawScan is use together as flag for enable server
+			if (socket_getline(inBuf, BUFSIZE)==-1){ //get line into inBuf
+				log(LOG_ERROR,"TCP server: End when reading input.");
+				break;
+			}
+			//std::cout << "client input:" << inBuf << std::endl;
+			if (serve_input(inBuf)==-1) { // serve line
+				//std::cout << "end from input:" << std::endl;
+				log(LOG_ERROR,"TCP server: End from input.");
+				break;
+			}
+		}
+		Serial.set_send_function(NULL); // disable Serial.println send line by socket
+		close(clientSocket);
+		//std::cout << "Connection close." << std::endl;
+		log(LOG_ERROR,"TCP server: Connection close.");
+		StopScanEventTheader();
+	}
+	while (true);
+	// next newer run (only for inspiration)
+	log(LOG_STATUS,"TCP server: END.");
+	close(mainSocket);
+	return 0;
+}