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examples/gcoap: Fix shell parameter validation
Executing the shell command with an URI-Path that doesn't start with a slash results in an assertion error while composing the client side message. This is suboptimal user experience, so add an explicit check for a valid URI-Path and a dedicated error message.
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@ -294,6 +294,11 @@ int gcoap_cli_cmd(int argc, char **argv)
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uri_len = strlen(argv[apos+1]);
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}
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if (uri && ((uri_len <= 0) || (uri[0] != '/'))) {
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puts("ERROR: URI-Path must start with a \"/\"");
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return _print_usage(argv);
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}
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if (_proxied) {
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sock_udp_ep_t tmp_remote;
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if (sock_udp_name2ep(&tmp_remote, argv[apos]) != 0) {
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@ -329,7 +334,7 @@ int gcoap_cli_cmd(int argc, char **argv)
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gcoap_req_init(&pdu, &buf[0], CONFIG_GCOAP_PDU_BUF_SIZE, code_pos, NULL);
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}
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else{
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else {
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gcoap_req_init(&pdu, &buf[0], CONFIG_GCOAP_PDU_BUF_SIZE, code_pos, uri);
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}
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coap_hdr_set_type(pdu.hdr, msg_type);
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