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Funtion recv, recvfrom, send, sendto implemented to differents socket connections: UDP, TCP, UNIXDOMAIN

This commit is contained in:
Vinicius Silva 2023-11-27 15:55:30 -03:00
parent 0e6ef7dc8a
commit c1ce100bcb
4 changed files with 42 additions and 44 deletions
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bin/client
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bin/server
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34
src/client.c
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@ -25,6 +25,8 @@ float times[N];
int num_of_read_bytes = 0;
typedef struct sockaddr_in socket_address;
socket_address server_address;
size_t buffer_size;
int socket_type;
@ -32,9 +34,6 @@ int domain, type, protocol;
float elapsed_time_ms = 0.00;
ssize_t (*send_generic_fn)(int __fd, const void *__buf, size_t __n, int __flags);
ssize_t (*recv_generic_fn)(int __fd, void *__buf, size_t __n, int __flags);
int domain, type, protocol, sin_family, address, sock;
typedef struct sockaddr_in socket_address;
@ -88,7 +87,13 @@ void connect_to_server(int client_socket, socket_address server_address)
int receive_buffer(int client_socket, int buffer_size)
{
int received_buffer[buffer_size];
recv_generic_fn(client_socket, received_buffer, buffer_size, 0);
if(socket_type != UDP_SOCKET_FLAG) recv(client_socket, received_buffer, buffer_size, 0);
else
{
socklen_t* server_addr_size = (socklen_t*)sizeof(server_address);
recvfrom(client_socket, received_buffer, buffer_size, 0, (struct sockaddr *)&server_address, server_addr_size);
}
for(int i = 0; i < buffer_size; i++)
{
@ -102,7 +107,12 @@ void send_buffer(int client_socket, int buffer[], size_t buffer_size)
for(int i = 0; i < num_of_read_bytes; i++)
{
printf("ENVIO %d\n", i);
send_generic_fn(client_socket, buffer, buffer_size, 0);
socklen_t server_addr_size = (socklen_t)sizeof(server_address);
if(socket_type != UDP_SOCKET_FLAG) send(client_socket, buffer, buffer_size, 0);
else sendto(client_socket, buffer, buffer_size, 0, (const struct sockaddr *)&server_address, server_addr_size);
receive_buffer(client_socket, buffer_size);
}
}
@ -134,26 +144,27 @@ void attribuite_socket_type(int socket_type)
switch (socket_type)
{
case TCP_SOCKET_FLAG: // TCP SOCKET
sin_family = AF_INET;
send_generic_fn = &send;
recv_generic_fn = &recv;
address = inet_addr(HOST_IP);
sock = SOCK_STREAM;
break;
case UDP_SOCKET_FLAG: // UDP SOCKET
send_generic_fn = &sendto;
recv_generic_fn = &recvfrom;
sin_family = AF_INET;
address = INADDR_ANY;
sock = SOCK_DGRAM;
break;
case UNIX_SOCKET_FLAG: // UNIXDOMAIN SOCKET
sin_family = AF_UNIX;
send_generic_fn = &send;
recv_generic_fn = &recv;
address = inet_addr(HOST_IP);
sock = SOCK_STREAM;
break;
default:
@ -191,7 +202,6 @@ int main(int argc, char** argv)
int client_socket = init_socket();
socket_address server_address;
server_address = config_server_address();
connect_to_server(client_socket, server_address);

48
src/server.c
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@ -11,9 +11,9 @@
#define HOST_IP "127.0.0.1" // IPV4 loopback address
#define SERVER_PORT 8481 // Server port
#define MAX_CONNECTIONS 1 // Num max client connected simultaneously
#define SOCKET_ERROR_CODE -1 // Socket create, Connection server, Receive buffer to server code error
#define SYSTEM_EXIT_FAILED 1 // Operating System program error response
#define SYSTEM_EXIT_SUCCESS 0 // Operating System program success response
#define SOCKET_ERROR_CODE -1 // Socket create, Connection server, Receive buffer to server code error
#define SYSTEM_EXIT_FAILED 1 // Operating System program error response
#define SYSTEM_EXIT_SUCCESS 0 // Operating System program success response
#define NUM_OF_ARGUMENTS 3
#define TCP_SOCKET_FLAG 1
#define UDP_SOCKET_FLAG 2
@ -21,19 +21,13 @@
int num_of_read_bytes = 0;
typedef struct sockaddr_in socket_address;
socket_address client_address;
socklen_t client_addr_len;
size_t buffer_size;
int socket_type;
ssize_t (*send_fn);
ssize_t recv_fn = NULL;
ssize_t (*send_generic_fn);
ssize_t (*recv_generic_fn);
//(int __fd, void *__buf, size_t __n, int __flags);
int domain, type, protocol, sin_family, address, sock;
void panic(char* message)
@ -97,19 +91,24 @@ int accept_connection(int client_socket, int server_socket, socket_address clien
void send_buffer(int client_socket, int buffer[], int buffer_size)
{
socklen_t client_addr_size = (socklen_t)sizeof(client_address);
send_fn(client_socket, buffer, buffer_size, 0);
if(socket_type != UDP_SOCKET_FLAG) send(client_socket, buffer, buffer_size, 0);
else sendto(client_socket, buffer, buffer_size, 0, (const struct sockaddr *)&client_address, client_addr_size);
}
int receive_buffer(int client_socket, int buffer_size)
{
ssize_t bytes_read;
socklen_t* client_addr_size = (socklen_t*)sizeof(client_address);
int received_buffer[buffer_size];
for(int i = 0; i < num_of_read_bytes; i++)
{
while((bytes_read = recv_fn(client_socket, received_buffer, buffer_size, 0)) > 0)
while((bytes_read = socket_type == UDP_SOCKET_FLAG ? recv(client_socket, received_buffer, buffer_size, 0) : recvfrom(client_socket, received_buffer, buffer_size, 0, (struct sockaddr *)&client_address, client_addr_size)) > 0)
{
send_buffer(client_socket, received_buffer, buffer_size);
}
@ -145,33 +144,22 @@ void attribuite_socket_type(int socket_type)
case TCP_SOCKET_FLAG: // TCP SOCKET
sin_family = AF_INET;
send_generic_fn = &send;
recv_generic_fn = &recv;
address = inet_addr(HOST_IP);
sock = SOCK_STREAM;
break;
case UDP_SOCKET_FLAG: // UDP SOCKET
ssize_t (*send_generic_fn)(int __fd, const void *__buf, size_t __n, int __flags, __CONST_SOCKADDR_ARG __addr, socklen_t __addr_len);
ssize_t (*recv_generic_fn)(int __fd, void *__restrict __buf, size_t __n, int __flags, __SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len);
send_generic_fn = &sendto;
recv_generic_fn = &recvfrom;
send_fn = &send_generic_fn;
recv_fn = &recv_generic_fn;
address = INADDR_ANY;
sock = SOCK_DGRAM;
break;
case UNIX_SOCKET_FLAG: // UNIXDOMAIN SOCKET
sin_family = AF_UNIX;
send_generic_fn(int __fd, const void *__buf, size_t __n, int __flags);
send_generic_fn = &send;
recv_generic_fn = &recv;
address = inet_addr(HOST_IP);
sock = SOCK_STREAM;
break;
default:
@ -206,8 +194,8 @@ int main(int argc, char** argv)
server_socket = create_socket();
socket_address server_address, client_address;
socklen_t client_addr_len = sizeof(client_address);
socket_address server_address;
client_addr_len = sizeof(client_address);
server_address = config_server_address();