diff --git a/Project/applications/smartcities/example-code/httpClient/tcp-client.c b/Project/applications/smartcities/example-code/httpClient/tcp-client.c
new file mode 100644
index 0000000..1a976e5
--- /dev/null
+++ b/Project/applications/smartcities/example-code/httpClient/tcp-client.c
@@ -0,0 +1,34 @@
+/*
+err_t netconn_connect ( struct netconn * aNetConn, ip_addr_t * aAddr, u16_t aPport );
+
+    in aNetConn : netconn structure received by netconn_new or netconn_accept.
+    in aAddr : the IP address of the remote server to connect to
+    in aPort : the port of the remote server to connect to 
+*/
+struct netconn *xNetConn = NULL;
+
+struct ip_addr local_ip; 
+struct ip_addr remote_ip; 
+int rc1, rc2; 
+ 
+xNetConn = netconn_new ( NETCONN_TCP ); 
+ 
+if ( xNetConn == NULL ) { 
+ 
+ /* No memory for new connection? */
+ continue;
+}
+
+local_ip.addr = <get IP of this device>
+
+rc1 = netconn_bind ( xNetConn, &local_ip, 0 ); 
+ 
+remote_ip.addr = xRemoteIp; // static or by netconn_gethostbyname ()
+rc2 = netconn_connect ( xNetConn, &remote_ip, cClientPort ); 
+ 
+if ( rc1 != ERR_OK || rc2 != ERR_OK )
+{
+
+  netconn_delete ( xNetConn );
+ continue;
+}
diff --git a/Project/applications/smartcities/httpClient.c b/Project/applications/smartcities/httpClient.c
index c5f24f7..b495936 100644
--- a/Project/applications/smartcities/httpClient.c
+++ b/Project/applications/smartcities/httpClient.c
@@ -45,37 +45,36 @@ Host: www.host1.com:80
 
 [Content]
 -----------
-POST:4 GET:3 PUT:3 DELETE:6
-espai +1
-255.255.255.255:15 o bé sizeof(*uri)
-rn +2
-HTTP/1.1:8
-+2
-Host: :6 + sizeof(host)
 */
 
 //const static char httpHeaders[] = "HTTP/1.1 200 OK\r\nContent-type: text/html\r\n\r\n";
 struct netconn* neocon;
 struct ip_addr local_ip;
 struct ip_addr remote_ip; 
-char* httpHeaders;
-char* httpContent;
+char* head;
+char* content;
 
 int httpRequest(struct httpHeaders head_in, struct ip_addr remote_ip, u16_t remote_port, char* content, int content_size)
 {	
 	// Check or default params
+	if (head_in.uri == NULL || content == NULL) return 1;
+	if (head_in.host == NULL) host = DEFAULT_REMOTE_IP;
 	if (remote_ip == NULL || remote_ip == 0) remote_ip = DEFAULT_REMOTE_IP;
-	if (host == NULL) host = DEFAULT_REMOTE_IP;
 	if (remote_port == NULL || remote_port == 0) remote_port = DEFAULT_REMOTE_PORT;
-	if (uri == NULL || content == NULL) return 1;
 
 	// Calculate header size
-	int header_size = sizeof(reqMethod2text(method));
-	header_size += sizeof " ";
-	header_size += strlen(uri);
-	header_size += sizeof(\r\n);
-	header_size += sizeof("Host: ");
-	header_size += 
+	int head_size = strlen(reqMethod2text(method));
+	head_size += sizeof " " + head_in.uri_size + sizeof "ENDL";
+	head_size += sizeof "Host: " + head_in.host_size + sizeof "ENDL";
+	head_size += sizeof CONTENT_TYPE_HEADER;
+	head_size += sizeof "Content-Length: " + numberofdigits(content_size);
+	
+	// Build header
+	head = (char *) malloc(head_size);
+	strcpy(head, reqMethod2text(method));
+	strcat(head, " ");
+	strcat(head, head_in.uri);
+	/* ... */
 	
 	// Set connection
 	neocon = netconn_new(NETCONN_TCP);
@@ -87,7 +86,7 @@ int httpRequest(struct httpHeaders head_in, struct ip_addr remote_ip, u16_t remo
 	
 }
 
-*char reqMethod2text(enum reqMethod method)
+char[] reqMethod2text(enum reqMethod method)
 {
 	switch(method)
 	{
@@ -103,6 +102,17 @@ int httpRequest(struct httpHeaders head_in, struct ip_addr remote_ip, u16_t remo
 		return NULL;
 	}
 }
+
+int numberofdigits(int number) // 0 has one digit.
+{
+	int digits = 0;
+    while (number)
+	{
+        number /= 10;
+        digits++;
+    }
+    return (digits == 0 ?) 1 : digits;
+}
 /*
 	struct netconn* httpServerConnection;
 	httpServerConnection = netconn_new(NETCONN_TCP);
@@ -111,13 +121,3 @@ int httpRequest(struct httpHeaders head_in, struct ip_addr remote_ip, u16_t remo
 	
 	libwismart_GetCurrentIP(libwismart_ip_addr_t *adress, *netmask, *gateway);
 */
-
-
-
-
-
-
-
-
-
-
diff --git a/Project/applications/smartcities/include/httpClient.h b/Project/applications/smartcities/include/httpClient.h
index 5da7dda..cdc5fa7 100644
--- a/Project/applications/smartcities/include/httpClient.h
+++ b/Project/applications/smartcities/include/httpClient.h
@@ -17,6 +17,9 @@
 #define DBG_WARNING(fmt,...)        if(1){printf("[SRV_WARNING] "fmt"\r\n", ##__VA_ARGS__);}else{({});}
 
 #define DEFAULT_REMOTE_IP 192.168.1.1
+#define DEFAULT_REMOTE_PORT 80
+#define ENDL "\r\n"
+#define CONTENT_TYPE_HEADER "Content-Type: application/json; charset=UTF-8"
 
 /*void httpServer_init(void);
 void httpServer_start(void);
@@ -26,6 +29,9 @@ void getLocalTime(uint32_t* hours, uint32_t* minutes, uint32_t* seconds);
 */
 
 int httpRequest(struct httpHeaders head_in, struct ip_addr remote_ip, u16_t remote_port, char* content, int content_size);
+char[] reqMethod2text(enum reqMethod method);
+int numberofdigits(int number);
+
 
 typedef enum reqMethod
 {