Multiclient with IP:port detection

include/base.h

@@ -28,6 +28,7 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <stdio.h>
+#include <netinet/in.h>
 
 #define BASE_H
 
@@ -130,6 +131,8 @@ struct {
     bool pleaseStop;
     Server_t *parent;
     int sockfd;
+    struct sockaddr_in clientAddr;
+    socklen_t socklen;
 } typedef ServerCommunication_t;
 
 /* -------------------------------------------------------------------------- */

src/cli.c

@@ -209,7 +209,7 @@ void connectedCommunication(int sockfd)
 
         // Detect null-string returned
         if (receiveBuff[0] == 0) {
-            printLog("An error occured or invalid command!\n");
+            printf("An error occured or invalid command!\n");
         }
 
         printf("%s\n", receiveBuff);

src/server.c

@@ -23,7 +23,6 @@
 #include "../include/cmds.h"
 
 #include <netdb.h>
-#include <netinet/in.h>
 #include <sys/socket.h>
 #include <arpa/inet.h>
 #include <fcntl.h>
@@ -47,12 +46,10 @@ void *serverCommunicationInstance(void *server)
 {
     ServerCommunication_t *args;
     char **argv = NULL;
-    char clientIP[16];
     char receiveBuff[RECEIVE_BUFFER_SIZE];
     char sendBuff[SEND_BUFFER_SIZE];
     int tokenIndex, bytesReceived;
-    struct sockaddr_in clientAddr;
-    socklen_t clientAddrSize = sizeof(clientAddr);
+    char clientIP[16];
 
     args = (ServerCommunication_t*) server;
 
@@ -64,9 +61,7 @@ void *serverCommunicationInstance(void *server)
         printLog("Waiting for commands...\n");
 
         // Read the message from client and copy it in buffer
-        bytesReceived = recvfrom(args->sockfd, receiveBuff, sizeof(receiveBuff),
-                                 0, (struct sockaddr *)&clientAddr,
-                                 &clientAddrSize);
+        bytesReceived = recv(args->sockfd, receiveBuff, RECEIVE_BUFFER_SIZE, 0);
         if (bytesReceived == -1) {
             printLog("Could not receive data!\n");
             break;
@@ -76,12 +71,15 @@ void *serverCommunicationInstance(void *server)
         if (bytesReceived == 0)
             break;
 
-        // get IP addr from client
-        inet_ntop(AF_INET, &(clientAddr.sin_addr), clientIP, clientAddrSize);
+        inet_ntop(AF_INET,
+                &args->clientAddr.sin_addr,
+                clientIP,
+                args->socklen);
 
         // Print buffer which contains the client request
-        printLog("Client %s:%d request : '%s'\n", clientIP,
-                 ntohs(clientAddr.sin_port),
+        printLog("Client %s:%d request : '%s'\n",
+                 clientIP,
+                 ntohs(args->clientAddr.sin_port),
                  receiveBuff);
 
         // get args in an array
@@ -105,13 +103,13 @@ void *serverCommunicationInstance(void *server)
         }
 
         // and send that buffer to client
-        sendto(args->sockfd, sendBuff, sizeof(sendBuff), 0,
-               (struct sockaddr *)&clientAddr, clientAddrSize);
+        send(args->sockfd, sendBuff, sizeof(sendBuff), 0);
     }
 
     close(args->sockfd);
+    if (argv)
+        free(argv);
     printLog("End of communications \n");
-    free(argv);
     return NULL;
 }
 
@@ -127,7 +125,7 @@ static void *serverMain(void *server)
     ServerCommunication_t serverSlots[MAX_CONNECTION] = {0};
     int connfd, flags, threadStatus, serverSlotIndex = 0;
     uint socklen;
-    struct sockaddr_in servaddr, clientAddr;
+    struct sockaddr_in servaddr;
     char clientIP[16];
 
      // Get args
@@ -141,12 +139,14 @@ static void *serverMain(void *server)
         goto serverExiting;
     }
 
+    // Get socket flags
     flags = fcntl(args->sockfd, F_GETFL);
     if (flags == -1) {
         printLog("Socket parameters getting failed!\n");
         goto serverExiting;
     }
 
+    // Change socket flags to non-blocking
     if (fcntl(args->sockfd, F_SETFL, flags | O_NONBLOCK) < 0) {
         printLog("Socket non-blocking setting failed!\n");
         goto serverExiting;
@@ -172,7 +172,7 @@ static void *serverMain(void *server)
         goto serverExiting;
     }
 
-    socklen = sizeof(clientAddr);
+    socklen = sizeof(struct sockaddr_in);
 
     if (getsockname(args->sockfd, (struct sockaddr *) &servaddr, &socklen)
             == -1) {
@@ -185,10 +185,12 @@ static void *serverMain(void *server)
     while (!args->pleaseStop) {
 
         // Accept the data packet from client
-        connfd = accept(args->sockfd, (struct sockaddr*)&clientAddr, &socklen);
+        connfd = accept(args->sockfd,
+                    (struct sockaddr*) &serverSlots[serverSlotIndex].clientAddr,
+                    &socklen);
         if (connfd < 0) {
             // If error is not due to lack of clients connecting, this is error
-            if (errno != EWOULDBLOCK) {
+            if (errno != EWOULDBLOCK && errno != EAGAIN) {
                 printLog("Server acccept failed!\n");
                 goto serverExiting;
             }
@@ -196,10 +198,15 @@ static void *serverMain(void *server)
         } else {
             // Client connected
             // get IP addr from client
-            inet_ntop(AF_INET, &(clientAddr.sin_addr), clientIP, socklen);
-            printLog("Client accepted from %s\n", clientIP); //TODO pass that thing to communicator ?
+            inet_ntop(AF_INET,
+                      &(serverSlots[serverSlotIndex].clientAddr.sin_addr),
+                      clientIP, socklen);
+            printLog("Client accepted from %s:%d\n",
+                     clientIP,
+                     ntohs(serverSlots[serverSlotIndex].clientAddr.sin_port));
 
             // Populate communicator slot
+            serverSlots[serverSlotIndex].socklen = socklen;
             serverSlots[serverSlotIndex].sockfd = connfd;
             serverSlots[serverSlotIndex].parent = args;