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feat(websocket): Add ws get HTTP response headers #794

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11 changes: 9 additions & 2 deletions components/esp_websocket_client/esp_websocket_client.c
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Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,8 @@ typedef struct {
const char *cert_common_name;
esp_err_t (*crt_bundle_attach)(void *conf);
esp_transport_handle_t ext_transport;
char *response_headers;
size_t response_headers_len;
} websocket_config_storage_t;

typedef enum {
Expand Down Expand Up @@ -474,7 +476,11 @@ static esp_err_t set_websocket_transport_optional_settings(esp_websocket_client_
.user_agent = client->config->user_agent,
.headers = client->config->headers,
.auth = client->config->auth,
.propagate_control_frames = true
.propagate_control_frames = true,
#if WS_TRANSPORT_STORE_RESPONSE_HEADERS
.response_headers = client->config->response_headers,
.response_headers_len = client->config->response_headers_len
#endif
};
return esp_transport_ws_set_config(trans, &config);
}
Expand Down Expand Up @@ -725,7 +731,8 @@ esp_websocket_client_handle_t esp_websocket_client_init(const esp_websocket_clie
client->config->cert_common_name = config->cert_common_name;
client->config->crt_bundle_attach = config->crt_bundle_attach;
client->config->ext_transport = config->ext_transport;

client->config->response_headers = config->response_headers;
client->config->response_headers_len = config->response_headers_len;
if (config->uri) {
if (esp_websocket_client_set_uri(client, config->uri) != ESP_OK) {
ESP_LOGE(TAG, "Invalid uri");
Expand Down
10 changes: 10 additions & 0 deletions components/esp_websocket_client/examples/target/main/websocket_example.c
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@
#include <cJSON.h>

#define NO_DATA_TIMEOUT_SEC 5
#define WS_HANDSHAKE_RESPONSE_HEADERS_MAX_SIZE 1024

static const char *TAG = "websocket";

Expand Down Expand Up @@ -177,6 +178,8 @@ static void websocket_app_start(void)
#if CONFIG_WS_OVER_TLS_SKIP_COMMON_NAME_CHECK
websocket_cfg.skip_cert_common_name_check = true;
#endif
websocket_cfg.response_headers = malloc(WS_HANDSHAKE_RESPONSE_HEADERS_MAX_SIZE);
websocket_cfg.response_headers_len = WS_HANDSHAKE_RESPONSE_HEADERS_MAX_SIZE;

ESP_LOGI(TAG, "Connecting to %s...", websocket_cfg.uri);

Expand All @@ -189,6 +192,12 @@ static void websocket_app_start(void)
int i = 0;
while (i < 5) {
if (esp_websocket_client_is_connected(client)) {
if (i == 0) {
/* WebSocket handshake response headers if available */
if (websocket_cfg.response_headers) {
ESP_LOGI(TAG, "WebSocket response headers:\n%s", websocket_cfg.response_headers);
}
}
int len = sprintf(data, "hello %04d", i++);
ESP_LOGI(TAG, "Sending %s", data);
esp_websocket_client_send_text(client, data, len, portMAX_DELAY);
Expand Down Expand Up @@ -226,6 +235,7 @@ static void websocket_app_start(void)

xSemaphoreTake(shutdown_sema, portMAX_DELAY);
esp_websocket_client_close(client, portMAX_DELAY);
free(websocket_cfg.response_headers);
ESP_LOGI(TAG, "Websocket Stopped");
esp_websocket_unregister_events(client, WEBSOCKET_EVENT_ANY, websocket_event_handler);
esp_websocket_client_destroy(client);
Expand Down
2 changes: 2 additions & 0 deletions components/esp_websocket_client/include/esp_websocket_client.h
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Original file line number Diff line number Diff line change
Expand Up @@ -134,6 +134,8 @@ typedef struct {
size_t ping_interval_sec; /*!< Websocket ping interval, defaults to 10 seconds if not set */
struct ifreq *if_name; /*!< The name of interface for data to go through. Use the default interface without setting */
esp_transport_handle_t ext_transport; /*!< External WebSocket tcp_transport handle to the client; or if null, the client will create its own transport handle. */
char *response_headers; /*!< WebSocket handshake response headers */
size_t response_headers_len; /*!< WebSocket handshake response headers length */
} esp_websocket_client_config_t;

/**
Expand Down