app: Add HTTP client

Add HTTP client with XAPOLL-based async I/O

Jira: SM-209

Signed-off-by: Juha Ylinen <juha.ylinen@nordicsemi.no>

Author: juhaylinen

app/CMakeLists.txt

@@ -28,6 +28,7 @@ target_sources_ifdef(CONFIG_SM_CMUX app PRIVATE src/sm_cmux.c)
 target_sources_ifdef(CONFIG_SM_GNSS app PRIVATE src/sm_at_gnss.c)
 target_sources_ifdef(CONFIG_SM_NRF_CLOUD app PRIVATE src/sm_at_nrfcloud.c)
 target_sources_ifdef(CONFIG_SM_MQTTC app PRIVATE src/sm_at_mqtt.c)
+target_sources_ifdef(CONFIG_SM_HTTPC app PRIVATE src/sm_at_httpc.c)
 target_sources_ifdef(CONFIG_SM_MODEM_TRACE_BACKEND_CMUX app PRIVATE src/sm_trace_backend_cmux.c)
 target_sources_ifdef(CONFIG_SM_MODEM_TRACE_BACKEND_UART app PRIVATE src/sm_trace_backend_uart.c)
 

app/Kconfig

@@ -352,6 +352,28 @@ config SM_PGPS_INJECT_FIX_DATA
 
 endif # SM_GNSS
 
+config SM_HTTPC
+	bool "HTTP client support"
+	default y
+	select EXPERIMENTAL
+	help
+	  Enable HTTP client AT commands for making HTTP/HTTPS requests.
+	  Uses non-blocking socket API with XAPOLL for asynchronous
+	  event-driven I/O.
+
+if SM_HTTPC
+
+config SM_HTTPC_RESPONSE_TIMEOUT_MS
+	int "HTTP client idle timeout (ms)"
+	range 1000 300000
+	default 30000
+	help
+	  Idle timeout for an active HTTP request in milliseconds.
+	  The timeout is extended when data is received; if no activity occurs
+	  before it expires, the request is aborted and reported as an error.
+
+endif # SM_HTTPC
+
 if NRF_MODEM_LIB_TRACE
 
 choice NRF_MODEM_LIB_TRACE_BACKEND