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tcp_transport: Added internal API for underlying socket, used for custom select on connection end for WS

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Internal tcp_transport functions could now use custom socket operations.
This is used for WebSocket transport, when we typically wait for clean
connection closure, i.e. selecting for read/error with expected errno or
recv size=0 while socket readable (=connection terminated by FIN flag)
This commit is contained in:
David Cermak
2020-07-17 17:59:05 +02:00
committed by bot
parent b213f2c6d3
commit 5e9f8b52e7
10 changed files with 232 additions and 64 deletions
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components/tcp_transport/transport.c
+10 -23
View File
@@ -21,32 +21,11 @@
#include "esp_log.h"
#include "esp_transport.h"
#include "esp_transport_internal.h"
#include "esp_transport_utils.h"
static const char *TAG = "TRANSPORT";
/**
* Transport layer structure, which will provide functions, basic properties for transport types
*/
struct esp_transport_item_t {
int port;
int socket; /*!< Socket to use in this transport */
char *scheme; /*!< Tag name */
void *context; /*!< Context data */
void *data; /*!< Additional transport data */
connect_func _connect; /*!< Connect function of this transport */
io_read_func _read; /*!< Read */
io_func _write; /*!< Write */
trans_func _close; /*!< Close */
poll_func _poll_read; /*!< Poll and read */
poll_func _poll_write; /*!< Poll and write */
trans_func _destroy; /*!< Destroy and free transport */
connect_async_func _connect_async; /*!< non-blocking connect function of this transport */
payload_transfer_func _parent_transfer; /*!< Function returning underlying transport layer */
esp_tls_error_handle_t error_handle; /*!< Pointer to esp-tls error handle */
STAILQ_ENTRY(esp_transport_item_t) next;
};
/**
@@ -305,4 +284,12 @@ void esp_transport_set_errors(esp_transport_handle_t t, const esp_tls_error_hand
if (t) {
memcpy(t->error_handle, error_handle, sizeof(esp_tls_last_error_t));
}
}
}
int esp_transport_get_socket(esp_transport_handle_t t)
{
if (t && t->_get_socket) {
return t->_get_socket(t);
}
return -1;
}