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/*
* Copyright (c) 2017 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "tcp_client.h"
#include "config.h"
#include <net/net_core.h>
#include <net/net_if.h>
#include <net/nbuf.h>
#include <misc/printk.h>
static
int set_addr(struct sockaddr *sock_addr, const char *addr, uint16_t server_port)
{
void *ptr = NULL;
int rc;
#ifdef CONFIG_NET_IPV6
net_sin6(sock_addr)->sin6_port = htons(server_port);
sock_addr->family = AF_INET6;
ptr = &(net_sin6(sock_addr)->sin6_addr);
rc = net_addr_pton(AF_INET6, addr, ptr);
#else
net_sin(sock_addr)->sin_port = htons(server_port);
sock_addr->family = AF_INET;
ptr = &(net_sin(sock_addr)->sin_addr);
rc = net_addr_pton(AF_INET, addr, ptr);
#endif
if (rc) {
printk("Invalid IP address: %s\n", addr);
}
return rc;
}
static
int if_addr_add(struct sockaddr *local_sock)
{
void *p = NULL;
#ifdef CONFIG_NET_IPV6
p = net_if_ipv6_addr_add(net_if_get_default(),
&net_sin6(local_sock)->sin6_addr,
NET_ADDR_MANUAL, 0);
#else
p = net_if_ipv4_addr_add(net_if_get_default(),
&net_sin(local_sock)->sin_addr,
NET_ADDR_MANUAL, 0);
#endif
if (p) {
return 0;
}
return -EINVAL;
}
int tcp_set_local_addr(struct tcp_client_ctx *ctx, const char *local_addr)
{
int rc;
rc = set_addr(&ctx->local_sock, local_addr, 0);
if (rc) {
printk("set_addr (local) error\n");
goto lb_exit;
}
rc = if_addr_add(&ctx->local_sock);
if (rc) {
printk("if_addr_add error\n");
}
lb_exit:
return rc;
}
static
void recv_cb(struct net_context *net_ctx, struct net_buf *rx, int status,
void *data)
{
struct tcp_client_ctx *ctx = (struct tcp_client_ctx *)data;
ARG_UNUSED(net_ctx);
if (status) {
return;
}
if (rx == NULL || net_nbuf_appdatalen(rx) == 0) {
goto lb_exit;
}
/* receive_cb must take ownership of the rx buffer */
if (ctx->receive_cb) {
ctx->receive_cb(ctx, rx);
return;
}
lb_exit:
net_buf_unref(rx);
}
int tcp_connect(struct tcp_client_ctx *ctx, const char *server_addr,
uint16_t server_port)
{
#if CONFIG_NET_IPV6
socklen_t addr_len = sizeof(struct sockaddr_in6);
sa_family_t family = AF_INET6;
#else
socklen_t addr_len = sizeof(struct sockaddr_in);
sa_family_t family = AF_INET;
#endif
struct sockaddr server_sock;
int rc;
rc = net_context_get(family, SOCK_STREAM, IPPROTO_TCP, &ctx->net_ctx);
if (rc) {
printk("net_context_get error\n");
return rc;
}
rc = net_context_bind(ctx->net_ctx, &ctx->local_sock, addr_len);
if (rc) {
printk("net_context_bind error\n");
goto lb_exit;
}
rc = set_addr(&server_sock, server_addr, server_port);
if (rc) {
printk("set_addr (server) error\n");
goto lb_exit;
}
rc = net_context_connect(ctx->net_ctx, &server_sock, addr_len, NULL,
ctx->timeout, NULL);
if (rc) {
printk("net_context_connect error\n");
goto lb_exit;
}
(void)net_context_recv(ctx->net_ctx, recv_cb, K_NO_WAIT, ctx);
return 0;
lb_exit:
net_context_put(ctx->net_ctx);
return rc;
}
int tcp_disconnect(struct tcp_client_ctx *ctx)
{
if (ctx->net_ctx) {
net_context_put(ctx->net_ctx);
ctx->net_ctx = NULL;
}
return 0;
}
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