ESP-IDF + 0/1 examples

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SourceVuESP-IDF Framework and ExamplesESP-IDFesp_tls_conn_read()

esp_tls_conn_read() function

Read from specified tls connection into the buffer 'data'.

Syntax

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Summary

Declaration

Definition

from esp_tls.h:490

ssize_t esp_tls_conn_read(esp_tls_t *tls, void *data, size_t datalen);

Implemented in esp_tls.c:133

Arguments

Argument

Description

tls

pointer to esp-tls as esp-tls handle.

data

Buffer to hold read data.

datalen

Length of data buffer.

Return value

- >0 if read operation was successful, the return value is the number of bytes actually read from the TLS/SSL connection. - 0 if read operation was not successful. The underlying connection was closed. - <0 if read operation was not successful, because either an error occured or an action must be taken by the calling process.

Related Functions

Found 37 other functions taking a esp_tls argument:

Function

Description

esp_tls_get_error_handle()

Returns the ESP-TLS error_handle - ESP_ERR_INVALID_ARG if (tls == NULL || error_handle == NULL)

esp_tls_conn_destroy()

Close the TLS/SSL connection and free any allocated resources. This function should be called to close each tls connection opened with esp_tls_conn_new_sync() (or esp_tls_conn_http_new_sync()) and esp_tls_conn_new_async() (or esp_tls_conn_http_new_async()) APIs.

esp_tls_conn_new_sync()

Create a new blocking TLS/SSL connection This function establishes a TLS/SSL connection with the specified host in blocking manner.

esp_tls_conn_write()

Write from buffer 'data' into specified tls connection.

esp_mbedtls_cleanup()

Internal Callback for mbedtls_cleanup , frees up all the memory used by mbedtls

esp_tls_conn_new_async()

Create a new non-blocking TLS/SSL connection This function initiates a non-blocking TLS/SSL connection with the specified host, but due to its non-blocking nature, it doesn't wait for the connection to get established.

esp_tls_conn_http_new_sync()

Create a new blocking TLS/SSL connection with a given "HTTP" url The behaviour is same as esp_tls_conn_new_sync() API. However this API accepts host's url.

esp_tls_server_session_delete()

Close the server side TLS/SSL connection and free any allocated resources. This function should be called to close each tls connection opened with esp_tls_server_session_create()

esp_tls_get_bytes_avail()

Return the number of application data bytes remaining to be read from the current record This API is a wrapper over mbedtls's mbedtls_ssl_get_bytes_avail() API.

esp_tls_get_conn_sockfd()

Returns the connection socket file descriptor from esp_tls session

esp_mbedtls_read()

Internal Callback API for mbedtls_ssl_read

esp_mbedtls_write()

Internal callback API for mbedtls_ssl_write

esp_create_mbedtls_handle()

Internal Callback for creating ssl handle for mbedtls

esp_tls_server_session_create()

Create TLS/SSL server session This function creates a TLS/SSL server context for already accepted client connection and performs TLS/SSL handshake with the client

esp_mbedtls_net_init()

mbedTLS function for Initializing socket wrappers

esp_tls_low_level_conn()

esp_mbedtls_handshake()

Internal Callback for mbedtls_handshake

esp_mbedtls_verify_certificate()

Internal Callback for Certificate verification for mbedtls

esp_mbedtls_conn_delete()

Internal Callback for deleting the mbedtls connection

esp_mbedtls_get_bytes_avail()

Internal Callback for mbedtls_get_bytes_avail

esp_mbedtls_get_ssl_context()

Return ssl context for mbedTLS stack

esp_mbedtls_server_session_create()

Create TLS/SSL server session

esp_mbedtls_server_session_delete()

Close the server side TLS/SSL connection and free any allocated resources.

set_client_config()

Internal Callback for set_client_config_function

set_ca_cert()

set_pki_context()

set_server_config()

esp_tls_conn_http_new_async()

Create a new non-blocking TLS/SSL connection with a given "HTTP" url The behaviour is same as esp_tls_conn_new_async() API. However this API accepts host's url.

esp_tls_get_ssl_context()

Returns the ssl context

esp_tls_set_conn_sockfd()

Sets the connection socket file descriptor for the esp_tls session

esp_tls_get_conn_state()

Gets the connection state for the esp_tls session

esp_tls_set_conn_state()

Sets the connection state for the esp_tls session