Function not implemented

[f4r4]

Could any one point to a documentation article that describes about this error
0 3 mongoose.c:4209:read_conn 2 0x4 0:0 288 err 38 (Function not implemented)

its a simple rest server and handling the connection with in this if condition on a fn function

else if (ev == MG_EV_HTTP_MSG) 

mongoose.c:3565:mg_listen           1 0x3 http://0.0.0.0:8010
0 3 mongoose.c:4316:accept_conn         2 accepted 192.168.10.40:33424
0 3 mongoose.c:4209:read_conn           2 0x4 0:0 288 err 38 (Function not implemented)
0 3 mongoose.c:4220:write_conn          2 0x4 251:0 251 err 38 (Function not implemented)
0 3 mongoose.c:4209:read_conn           2 0x4 0:0 -1 err 38 (Function not implemented)
0 3 mongoose.c:3520:mg_close_conn       2 closed

please advice

[scaprile]

Can you please tell us on which one of the supported architectures, with what configuration, you are trying to run your piece of code, using which Mongoose version, with what macro options enabled ?

[f4r4]

1. PowerPC
2. No configs
3. No macro versions enabled
4. v7.7

I understand its not in the supported architectures, if you could point me where this error happens
or definitions of the error code I can try to debug things

#include <stdio.h>

#include "mongoose.h"
#include "mjson/mjson.h"

static const char *s_listen_url = "http://0.0.0.0:8010";
static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
    if (mg_http_match_uri(hm, "/")) {
      char *s = NULL;
      mjson_printf(&mjson_print_dynamic_buf, &s, "{\"result\": \"%s\"}\n", "2.0.0");
      mg_http_reply(c, 200, "Content-Type: application/json\r\n", s);
      free(s);       
    }
  } else if (ev == MG_EV_CLOSE) {
    c->is_closing = 1;
  }
  (void) fn_data;
}

int main(void) {
  struct mg_mgr mgr;

  mg_log_set("3");                       // Set log level
  mg_mgr_init(&mgr);                             // Initialise event manager
  mg_http_listen(&mgr, s_listen_url, fn, NULL);  // Start proxy
  for (;;) mg_mgr_poll(&mgr, 1000);              // Event loop
  mg_mgr_free(&mgr);

  return 0;
}

[scaprile]

mongoose/mongoose.c

Lines 4205 to 4209 in d5993ba

	char *buf = (char *) &c->recv.buf[c->recv.len];
	size_t len = c->recv.size - c->recv.len;
	n = c->is_tls ? mg_tls_recv(c, buf, len) : mg_sock_recv(c, buf, len);
	MG_DEBUG(("%lu %p %d:%d %ld err %d (%s)", c->id, c->fd, (int) c->send.len,
	(int) c->recv.len, n, MG_SOCK_ERRNO, strerror(errno)));

mongoose/mongoose.c

Lines 4215 to 4220 in d5993ba

	static void write_conn(struct mg_connection *c) {
	char *buf = (char *) c->send.buf;
	size_t len = c->send.len;
	long n = c->is_tls ? mg_tls_send(c, buf, len) : mg_sock_send(c, buf, len);
	MG_DEBUG(("%lu %p %d:%d %ld err %d (%s)", c->id, c->fd, (int) c->send.len,
	(int) c->recv.len, n, MG_SOCK_ERRNO, strerror(errno)));

mg_sock_recv() and mg_sock_send()

mongoose/mongoose.c

Lines 4072 to 4077 in d5993ba

	n = send(FD(c), (char *) buf, len, MSG_NONBLOCKING);
	#if MG_ARCH == MG_ARCH_RTX
	if (n == BSD_EWOULDBLOCK) return 0;
	#endif
	}
	return n == 0 ? -1 : n < 0 && mg_sock_would_block() ? 0 : n;

your send() socket function is returning that error code.
Which OS are you using ? If you don't tell Mongoose the architecture, it will try to guess it
https://github.com/cesanta/mongoose/blob/7.7/src/arch.h
and complain if it can't.
It seems to be guessing some architecture you seem to don't have fully functional as the socket interface is not working properly.
This seems to be the documentation you need: https://mongoose.ws/documentation/#build-options

[scaprile]

This seems to be the documentation you need: https://mongoose.ws/documentation/#build-options

[cpq]

@f4r4

1. Use latest version - and you don't need mjson.c and mjson.h. Mongoose has all JSON functionality built-in
2. On susccessful reads, and your are successful, just ignore the error message